diff --git a/services/iaas/api_default_test.go b/services/iaas/api_default_test.go
index d5d7ab2c2..922119997 100644
--- a/services/iaas/api_default_test.go
+++ b/services/iaas/api_default_test.go
@@ -18,22 +18,23 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/uuid"
 	"github.com/stackitcloud/stackit-sdk-go/core/config"
 )
 
 func Test_iaas_DefaultApiService(t *testing.T) {
 
 	t.Run("Test DefaultApiService AddNetworkToServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/networks/{networkId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/networks/{networkId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -64,9 +65,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		networkId := "networkId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		networkId := networkIdValue
 
 		reqErr := apiClient.AddNetworkToServer(context.Background(), projectId, serverId, networkId).Execute()
 
@@ -76,16 +77,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService AddNicToServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/nics/{nicId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		nicIdValue := "nicId"
-		path = strings.Replace(path, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/nics/{nicId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		nicIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -116,9 +117,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		nicId := "nicId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		nicId := nicIdValue
 
 		reqErr := apiClient.AddNicToServer(context.Background(), projectId, serverId, nicId).Execute()
 
@@ -128,16 +129,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService AddPublicIpToServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/public-ips/{publicIpId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		publicIpIdValue := "publicIpId"
-		path = strings.Replace(path, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/public-ips/{publicIpId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		publicIpIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -168,9 +169,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		publicIpId := "publicIpId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		publicIpId := publicIpIdValue
 
 		reqErr := apiClient.AddPublicIpToServer(context.Background(), projectId, serverId, publicIpId).Execute()
 
@@ -180,16 +181,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService AddSecurityGroupToServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/security-groups/{securityGroupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/security-groups/{securityGroupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -220,9 +221,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		securityGroupId := "securityGroupId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		securityGroupId := securityGroupIdValue
 
 		reqErr := apiClient.AddSecurityGroupToServer(context.Background(), projectId, serverId, securityGroupId).Execute()
 
@@ -232,16 +233,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService AddServiceAccountToServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/service-accounts/{serviceAccountMail}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/service-accounts/{serviceAccountMail}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 		serviceAccountMailValue := "serviceAccountMail"
-		path = strings.Replace(path, "{"+"serviceAccountMail"+"}", url.PathEscape(ParameterValueToString(serviceAccountMailValue, "serviceAccountMail")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serviceAccountMail"+"}", url.PathEscape(ParameterValueToString(serviceAccountMailValue, "serviceAccountMail")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ServiceAccountMailListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -275,31 +276,31 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		serviceAccountMail := "serviceAccountMail"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		serviceAccountMail := serviceAccountMailValue
 
 		resp, reqErr := apiClient.AddServiceAccountToServer(context.Background(), projectId, serverId, serviceAccountMail).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService AddVolumeToServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := VolumeAttachment{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -333,27 +334,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		volumeId := volumeIdValue
 
 		resp, reqErr := apiClient.AddVolumeToServer(context.Background(), projectId, serverId, volumeId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateAffinityGroup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/affinity-groups"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/affinity-groups"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := AffinityGroup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -387,7 +388,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createAffinityGroupPayload := CreateAffinityGroupPayload{}
 
 		resp, reqErr := apiClient.CreateAffinityGroup(context.Background(), projectId).CreateAffinityGroupPayload(createAffinityGroupPayload).Execute()
@@ -395,18 +396,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateBackup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/backups"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/backups"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Backup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -440,7 +441,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createBackupPayload := CreateBackupPayload{}
 
 		resp, reqErr := apiClient.CreateBackup(context.Background(), projectId).CreateBackupPayload(createBackupPayload).Execute()
@@ -448,18 +449,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateImage", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ImageCreateResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -493,7 +494,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createImagePayload := CreateImagePayload{}
 
 		resp, reqErr := apiClient.CreateImage(context.Background(), projectId).CreateImagePayload(createImagePayload).Execute()
@@ -501,16 +502,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateKeyPair", func(t *testing.T) {
-		path := "/v1beta1/keypairs"
+		_apiUrlPath := "/v1beta1/keypairs"
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Keypair{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -551,18 +552,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateNetwork", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Network{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -596,7 +597,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createNetworkPayload := CreateNetworkPayload{}
 
 		resp, reqErr := apiClient.CreateNetwork(context.Background(), projectId).CreateNetworkPayload(createNetworkPayload).Execute()
@@ -604,18 +605,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateNetworkArea", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkArea{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -649,7 +650,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
+		organizationId := organizationIdValue
 		createNetworkAreaPayload := CreateNetworkAreaPayload{}
 
 		resp, reqErr := apiClient.CreateNetworkArea(context.Background(), organizationId).CreateNetworkAreaPayload(createNetworkAreaPayload).Execute()
@@ -657,20 +658,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateNetworkAreaRange", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkRangeListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -704,8 +705,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 		createNetworkAreaRangePayload := CreateNetworkAreaRangePayload{}
 
 		resp, reqErr := apiClient.CreateNetworkAreaRange(context.Background(), organizationId, areaId).CreateNetworkAreaRangePayload(createNetworkAreaRangePayload).Execute()
@@ -713,20 +714,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateNetworkAreaRoute", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := RouteListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -760,8 +761,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 		createNetworkAreaRoutePayload := CreateNetworkAreaRoutePayload{}
 
 		resp, reqErr := apiClient.CreateNetworkAreaRoute(context.Background(), organizationId, areaId).CreateNetworkAreaRoutePayload(createNetworkAreaRoutePayload).Execute()
@@ -769,20 +770,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateNic", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}/nics"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}/nics"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NIC{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -816,8 +817,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
+		projectId := projectIdValue
+		networkId := networkIdValue
 		createNicPayload := CreateNicPayload{}
 
 		resp, reqErr := apiClient.CreateNic(context.Background(), projectId, networkId).CreateNicPayload(createNicPayload).Execute()
@@ -825,18 +826,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreatePublicIP", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/public-ips"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/public-ips"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := PublicIp{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -870,7 +871,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createPublicIPPayload := CreatePublicIPPayload{}
 
 		resp, reqErr := apiClient.CreatePublicIP(context.Background(), projectId).CreatePublicIPPayload(createPublicIPPayload).Execute()
@@ -878,18 +879,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateSecurityGroup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SecurityGroup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -923,7 +924,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createSecurityGroupPayload := CreateSecurityGroupPayload{}
 
 		resp, reqErr := apiClient.CreateSecurityGroup(context.Background(), projectId).CreateSecurityGroupPayload(createSecurityGroupPayload).Execute()
@@ -931,20 +932,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateSecurityGroupRule", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SecurityGroupRule{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -978,8 +979,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		securityGroupId := "securityGroupId"
+		projectId := projectIdValue
+		securityGroupId := securityGroupIdValue
 		createSecurityGroupRulePayload := CreateSecurityGroupRulePayload{}
 
 		resp, reqErr := apiClient.CreateSecurityGroupRule(context.Background(), projectId, securityGroupId).CreateSecurityGroupRulePayload(createSecurityGroupRulePayload).Execute()
@@ -987,18 +988,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Server{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -1032,7 +1033,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createServerPayload := CreateServerPayload{}
 
 		resp, reqErr := apiClient.CreateServer(context.Background(), projectId).CreateServerPayload(createServerPayload).Execute()
@@ -1040,18 +1041,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateSnapshot", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/snapshots"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/snapshots"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Snapshot{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -1085,7 +1086,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createSnapshotPayload := CreateSnapshotPayload{}
 
 		resp, reqErr := apiClient.CreateSnapshot(context.Background(), projectId).CreateSnapshotPayload(createSnapshotPayload).Execute()
@@ -1093,18 +1094,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService CreateVolume", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volumes"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volumes"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Volume{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -1138,7 +1139,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 		createVolumePayload := CreateVolumePayload{}
 
 		resp, reqErr := apiClient.CreateVolume(context.Background(), projectId).CreateVolumePayload(createVolumePayload).Execute()
@@ -1146,20 +1147,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService DeallocateServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/deallocate"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/deallocate"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1190,8 +1191,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		reqErr := apiClient.DeallocateServer(context.Background(), projectId, serverId).Execute()
 
@@ -1201,14 +1202,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteAffinityGroup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/affinity-groups/{affinityGroupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		affinityGroupIdValue := "affinityGroupId"
-		path = strings.Replace(path, "{"+"affinityGroupId"+"}", url.PathEscape(ParameterValueToString(affinityGroupIdValue, "affinityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/affinity-groups/{affinityGroupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		affinityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"affinityGroupId"+"}", url.PathEscape(ParameterValueToString(affinityGroupIdValue, "affinityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1239,8 +1240,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		affinityGroupId := "affinityGroupId"
+		projectId := projectIdValue
+		affinityGroupId := affinityGroupIdValue
 
 		reqErr := apiClient.DeleteAffinityGroup(context.Background(), projectId, affinityGroupId).Execute()
 
@@ -1250,14 +1251,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteBackup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/backups/{backupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		backupIdValue := "backupId"
-		path = strings.Replace(path, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/backups/{backupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		backupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1288,8 +1289,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		backupId := "backupId"
+		projectId := projectIdValue
+		backupId := backupIdValue
 
 		reqErr := apiClient.DeleteBackup(context.Background(), projectId, backupId).Execute()
 
@@ -1299,14 +1300,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteImage", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1337,8 +1338,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 
 		reqErr := apiClient.DeleteImage(context.Background(), projectId, imageId).Execute()
 
@@ -1348,14 +1349,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteImageShare", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/share"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/share"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1386,8 +1387,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 
 		reqErr := apiClient.DeleteImageShare(context.Background(), projectId, imageId).Execute()
 
@@ -1397,16 +1398,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteImageShareConsumer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/share/{consumerProjectId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
-		consumerProjectIdValue := "consumerProjectId"
-		path = strings.Replace(path, "{"+"consumerProjectId"+"}", url.PathEscape(ParameterValueToString(consumerProjectIdValue, "consumerProjectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/share/{consumerProjectId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		consumerProjectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"consumerProjectId"+"}", url.PathEscape(ParameterValueToString(consumerProjectIdValue, "consumerProjectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1437,9 +1438,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
-		consumerProjectId := "consumerProjectId"
+		projectId := projectIdValue
+		imageId := imageIdValue
+		consumerProjectId := consumerProjectIdValue
 
 		reqErr := apiClient.DeleteImageShareConsumer(context.Background(), projectId, imageId, consumerProjectId).Execute()
 
@@ -1449,12 +1450,12 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteKeyPair", func(t *testing.T) {
-		path := "/v1beta1/keypairs/{keypairName}"
+		_apiUrlPath := "/v1beta1/keypairs/{keypairName}"
 		keypairNameValue := "keypairName"
-		path = strings.Replace(path, "{"+"keypairName"+"}", url.PathEscape(ParameterValueToString(keypairNameValue, "keypairName")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"keypairName"+"}", url.PathEscape(ParameterValueToString(keypairNameValue, "keypairName")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1485,7 +1486,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		keypairName := "keypairName"
+		keypairName := keypairNameValue
 
 		reqErr := apiClient.DeleteKeyPair(context.Background(), keypairName).Execute()
 
@@ -1495,14 +1496,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteNetwork", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1533,8 +1534,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
+		projectId := projectIdValue
+		networkId := networkIdValue
 
 		reqErr := apiClient.DeleteNetwork(context.Background(), projectId, networkId).Execute()
 
@@ -1544,14 +1545,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteNetworkArea", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1582,8 +1583,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 
 		reqErr := apiClient.DeleteNetworkArea(context.Background(), organizationId, areaId).Execute()
 
@@ -1593,16 +1594,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteNetworkAreaRange", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges/{networkRangeId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
-		networkRangeIdValue := "networkRangeId"
-		path = strings.Replace(path, "{"+"networkRangeId"+"}", url.PathEscape(ParameterValueToString(networkRangeIdValue, "networkRangeId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges/{networkRangeId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		networkRangeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkRangeId"+"}", url.PathEscape(ParameterValueToString(networkRangeIdValue, "networkRangeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1633,9 +1634,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
-		networkRangeId := "networkRangeId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
+		networkRangeId := networkRangeIdValue
 
 		reqErr := apiClient.DeleteNetworkAreaRange(context.Background(), organizationId, areaId, networkRangeId).Execute()
 
@@ -1645,16 +1646,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteNetworkAreaRoute", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes/{routeId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
-		routeIdValue := "routeId"
-		path = strings.Replace(path, "{"+"routeId"+"}", url.PathEscape(ParameterValueToString(routeIdValue, "routeId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes/{routeId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		routeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"routeId"+"}", url.PathEscape(ParameterValueToString(routeIdValue, "routeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1685,9 +1686,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
-		routeId := "routeId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
+		routeId := routeIdValue
 
 		reqErr := apiClient.DeleteNetworkAreaRoute(context.Background(), organizationId, areaId, routeId).Execute()
 
@@ -1697,16 +1698,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteNic", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}/nics/{nicId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
-		nicIdValue := "nicId"
-		path = strings.Replace(path, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}/nics/{nicId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		nicIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1737,9 +1738,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
-		nicId := "nicId"
+		projectId := projectIdValue
+		networkId := networkIdValue
+		nicId := nicIdValue
 
 		reqErr := apiClient.DeleteNic(context.Background(), projectId, networkId, nicId).Execute()
 
@@ -1749,14 +1750,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeletePublicIP", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/public-ips/{publicIpId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		publicIpIdValue := "publicIpId"
-		path = strings.Replace(path, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/public-ips/{publicIpId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		publicIpIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1787,8 +1788,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		publicIpId := "publicIpId"
+		projectId := projectIdValue
+		publicIpId := publicIpIdValue
 
 		reqErr := apiClient.DeletePublicIP(context.Background(), projectId, publicIpId).Execute()
 
@@ -1798,14 +1799,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteSecurityGroup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1836,8 +1837,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		securityGroupId := "securityGroupId"
+		projectId := projectIdValue
+		securityGroupId := securityGroupIdValue
 
 		reqErr := apiClient.DeleteSecurityGroup(context.Background(), projectId, securityGroupId).Execute()
 
@@ -1847,16 +1848,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteSecurityGroupRule", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules/{securityGroupRuleId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
-		securityGroupRuleIdValue := "securityGroupRuleId"
-		path = strings.Replace(path, "{"+"securityGroupRuleId"+"}", url.PathEscape(ParameterValueToString(securityGroupRuleIdValue, "securityGroupRuleId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules/{securityGroupRuleId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		securityGroupRuleIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupRuleId"+"}", url.PathEscape(ParameterValueToString(securityGroupRuleIdValue, "securityGroupRuleId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1887,9 +1888,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		securityGroupId := "securityGroupId"
-		securityGroupRuleId := "securityGroupRuleId"
+		projectId := projectIdValue
+		securityGroupId := securityGroupIdValue
+		securityGroupRuleId := securityGroupRuleIdValue
 
 		reqErr := apiClient.DeleteSecurityGroupRule(context.Background(), projectId, securityGroupId, securityGroupRuleId).Execute()
 
@@ -1899,14 +1900,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1937,8 +1938,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		reqErr := apiClient.DeleteServer(context.Background(), projectId, serverId).Execute()
 
@@ -1948,14 +1949,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteSnapshot", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/snapshots/{snapshotId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		snapshotIdValue := "snapshotId"
-		path = strings.Replace(path, "{"+"snapshotId"+"}", url.PathEscape(ParameterValueToString(snapshotIdValue, "snapshotId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/snapshots/{snapshotId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		snapshotIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"snapshotId"+"}", url.PathEscape(ParameterValueToString(snapshotIdValue, "snapshotId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -1986,8 +1987,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		snapshotId := "snapshotId"
+		projectId := projectIdValue
+		snapshotId := snapshotIdValue
 
 		reqErr := apiClient.DeleteSnapshot(context.Background(), projectId, snapshotId).Execute()
 
@@ -1997,14 +1998,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService DeleteVolume", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volumes/{volumeId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volumes/{volumeId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -2035,8 +2036,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		volumeId := volumeIdValue
 
 		reqErr := apiClient.DeleteVolume(context.Background(), projectId, volumeId).Execute()
 
@@ -2046,14 +2047,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService GetAffinityGroup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/affinity-groups/{affinityGroupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		affinityGroupIdValue := "affinityGroupId"
-		path = strings.Replace(path, "{"+"affinityGroupId"+"}", url.PathEscape(ParameterValueToString(affinityGroupIdValue, "affinityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/affinity-groups/{affinityGroupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		affinityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"affinityGroupId"+"}", url.PathEscape(ParameterValueToString(affinityGroupIdValue, "affinityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := AffinityGroup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2087,30 +2088,30 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		affinityGroupId := "affinityGroupId"
+		projectId := projectIdValue
+		affinityGroupId := affinityGroupIdValue
 
 		resp, reqErr := apiClient.GetAffinityGroup(context.Background(), projectId, affinityGroupId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetAttachedVolume", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := VolumeAttachment{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2144,29 +2145,29 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		volumeId := volumeIdValue
 
 		resp, reqErr := apiClient.GetAttachedVolume(context.Background(), projectId, serverId, volumeId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetBackup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/backups/{backupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		backupIdValue := "backupId"
-		path = strings.Replace(path, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/backups/{backupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		backupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Backup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2200,28 +2201,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		backupId := "backupId"
+		projectId := projectIdValue
+		backupId := backupIdValue
 
 		resp, reqErr := apiClient.GetBackup(context.Background(), projectId, backupId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetImage", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Image{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2255,28 +2256,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 
 		resp, reqErr := apiClient.GetImage(context.Background(), projectId, imageId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetImageShare", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/share"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/share"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ImageShare{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2310,30 +2311,30 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 
 		resp, reqErr := apiClient.GetImageShare(context.Background(), projectId, imageId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetImageShareConsumer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/share/{consumerProjectId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
-		consumerProjectIdValue := "consumerProjectId"
-		path = strings.Replace(path, "{"+"consumerProjectId"+"}", url.PathEscape(ParameterValueToString(consumerProjectIdValue, "consumerProjectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/share/{consumerProjectId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		consumerProjectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"consumerProjectId"+"}", url.PathEscape(ParameterValueToString(consumerProjectIdValue, "consumerProjectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ImageShareConsumer{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2367,27 +2368,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
-		consumerProjectId := "consumerProjectId"
+		projectId := projectIdValue
+		imageId := imageIdValue
+		consumerProjectId := consumerProjectIdValue
 
 		resp, reqErr := apiClient.GetImageShareConsumer(context.Background(), projectId, imageId, consumerProjectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetKeyPair", func(t *testing.T) {
-		path := "/v1beta1/keypairs/{keypairName}"
+		_apiUrlPath := "/v1beta1/keypairs/{keypairName}"
 		keypairNameValue := "keypairName"
-		path = strings.Replace(path, "{"+"keypairName"+"}", url.PathEscape(ParameterValueToString(keypairNameValue, "keypairName")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"keypairName"+"}", url.PathEscape(ParameterValueToString(keypairNameValue, "keypairName")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Keypair{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2421,27 +2422,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		keypairName := "keypairName"
+		keypairName := keypairNameValue
 
 		resp, reqErr := apiClient.GetKeyPair(context.Background(), keypairName).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetMachineType", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/machine-types/{machineType}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/machine-types/{machineType}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 		machineTypeValue := "machineType"
-		path = strings.Replace(path, "{"+"machineType"+"}", url.PathEscape(ParameterValueToString(machineTypeValue, "machineType")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"machineType"+"}", url.PathEscape(ParameterValueToString(machineTypeValue, "machineType")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := MachineType{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2475,28 +2476,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		machineType := "machineType"
+		projectId := projectIdValue
+		machineType := machineTypeValue
 
 		resp, reqErr := apiClient.GetMachineType(context.Background(), projectId, machineType).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetNetwork", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Network{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2530,28 +2531,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
+		projectId := projectIdValue
+		networkId := networkIdValue
 
 		resp, reqErr := apiClient.GetNetwork(context.Background(), projectId, networkId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetNetworkArea", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkArea{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2585,30 +2586,30 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 
 		resp, reqErr := apiClient.GetNetworkArea(context.Background(), organizationId, areaId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetNetworkAreaRange", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges/{networkRangeId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
-		networkRangeIdValue := "networkRangeId"
-		path = strings.Replace(path, "{"+"networkRangeId"+"}", url.PathEscape(ParameterValueToString(networkRangeIdValue, "networkRangeId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges/{networkRangeId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		networkRangeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkRangeId"+"}", url.PathEscape(ParameterValueToString(networkRangeIdValue, "networkRangeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkRange{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2642,31 +2643,31 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
-		networkRangeId := "networkRangeId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
+		networkRangeId := networkRangeIdValue
 
 		resp, reqErr := apiClient.GetNetworkAreaRange(context.Background(), organizationId, areaId, networkRangeId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetNetworkAreaRoute", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes/{routeId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
-		routeIdValue := "routeId"
-		path = strings.Replace(path, "{"+"routeId"+"}", url.PathEscape(ParameterValueToString(routeIdValue, "routeId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes/{routeId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		routeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"routeId"+"}", url.PathEscape(ParameterValueToString(routeIdValue, "routeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Route{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2700,31 +2701,31 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
-		routeId := "routeId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
+		routeId := routeIdValue
 
 		resp, reqErr := apiClient.GetNetworkAreaRoute(context.Background(), organizationId, areaId, routeId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetNic", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}/nics/{nicId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
-		nicIdValue := "nicId"
-		path = strings.Replace(path, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}/nics/{nicId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		nicIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NIC{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2758,29 +2759,29 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
-		nicId := "nicId"
+		projectId := projectIdValue
+		networkId := networkIdValue
+		nicId := nicIdValue
 
 		resp, reqErr := apiClient.GetNic(context.Background(), projectId, networkId, nicId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetOrganizationRequest", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/requests/{requestId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/requests/{requestId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
 		requestIdValue := "requestId"
-		path = strings.Replace(path, "{"+"requestId"+"}", url.PathEscape(ParameterValueToString(requestIdValue, "requestId")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"requestId"+"}", url.PathEscape(ParameterValueToString(requestIdValue, "requestId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Request{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2814,28 +2815,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		requestId := "requestId"
+		organizationId := organizationIdValue
+		requestId := requestIdValue
 
 		resp, reqErr := apiClient.GetOrganizationRequest(context.Background(), organizationId, requestId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetProjectNIC", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/nics/{nicId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		nicIdValue := "nicId"
-		path = strings.Replace(path, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/nics/{nicId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		nicIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NIC{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2869,28 +2870,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		nicId := "nicId"
+		projectId := projectIdValue
+		nicId := nicIdValue
 
 		resp, reqErr := apiClient.GetProjectNIC(context.Background(), projectId, nicId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetProjectRequest", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/requests/{requestId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/requests/{requestId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 		requestIdValue := "requestId"
-		path = strings.Replace(path, "{"+"requestId"+"}", url.PathEscape(ParameterValueToString(requestIdValue, "requestId")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"requestId"+"}", url.PathEscape(ParameterValueToString(requestIdValue, "requestId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Request{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2924,28 +2925,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		requestId := "requestId"
+		projectId := projectIdValue
+		requestId := requestIdValue
 
 		resp, reqErr := apiClient.GetProjectRequest(context.Background(), projectId, requestId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetPublicIP", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/public-ips/{publicIpId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		publicIpIdValue := "publicIpId"
-		path = strings.Replace(path, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/public-ips/{publicIpId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		publicIpIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := PublicIp{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -2979,28 +2980,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		publicIpId := "publicIpId"
+		projectId := projectIdValue
+		publicIpId := publicIpIdValue
 
 		resp, reqErr := apiClient.GetPublicIP(context.Background(), projectId, publicIpId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetSecurityGroup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SecurityGroup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3034,30 +3035,30 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		securityGroupId := "securityGroupId"
+		projectId := projectIdValue
+		securityGroupId := securityGroupIdValue
 
 		resp, reqErr := apiClient.GetSecurityGroup(context.Background(), projectId, securityGroupId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetSecurityGroupRule", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules/{securityGroupRuleId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
-		securityGroupRuleIdValue := "securityGroupRuleId"
-		path = strings.Replace(path, "{"+"securityGroupRuleId"+"}", url.PathEscape(ParameterValueToString(securityGroupRuleIdValue, "securityGroupRuleId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules/{securityGroupRuleId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		securityGroupRuleIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupRuleId"+"}", url.PathEscape(ParameterValueToString(securityGroupRuleIdValue, "securityGroupRuleId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SecurityGroupRule{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3091,29 +3092,29 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		securityGroupId := "securityGroupId"
-		securityGroupRuleId := "securityGroupRuleId"
+		projectId := projectIdValue
+		securityGroupId := securityGroupIdValue
+		securityGroupRuleId := securityGroupRuleIdValue
 
 		resp, reqErr := apiClient.GetSecurityGroupRule(context.Background(), projectId, securityGroupId, securityGroupRuleId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Server{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3147,28 +3148,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		resp, reqErr := apiClient.GetServer(context.Background(), projectId, serverId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetServerConsole", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/console"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/console"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ServerConsoleUrl{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3202,28 +3203,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		resp, reqErr := apiClient.GetServerConsole(context.Background(), projectId, serverId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetServerLog", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/log"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/log"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := GetServerLog200Response{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3257,28 +3258,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		resp, reqErr := apiClient.GetServerLog(context.Background(), projectId, serverId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetSnapshot", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/snapshots/{snapshotId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		snapshotIdValue := "snapshotId"
-		path = strings.Replace(path, "{"+"snapshotId"+"}", url.PathEscape(ParameterValueToString(snapshotIdValue, "snapshotId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/snapshots/{snapshotId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		snapshotIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"snapshotId"+"}", url.PathEscape(ParameterValueToString(snapshotIdValue, "snapshotId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Snapshot{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3312,28 +3313,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		snapshotId := "snapshotId"
+		projectId := projectIdValue
+		snapshotId := snapshotIdValue
 
 		resp, reqErr := apiClient.GetSnapshot(context.Background(), projectId, snapshotId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetVolume", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volumes/{volumeId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volumes/{volumeId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Volume{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3367,28 +3368,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		volumeId := volumeIdValue
 
 		resp, reqErr := apiClient.GetVolume(context.Background(), projectId, volumeId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService GetVolumePerformanceClass", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volume-performance-classes/{volumePerformanceClass}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volume-performance-classes/{volumePerformanceClass}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 		volumePerformanceClassValue := "volumePerformanceClass"
-		path = strings.Replace(path, "{"+"volumePerformanceClass"+"}", url.PathEscape(ParameterValueToString(volumePerformanceClassValue, "volumePerformanceClass")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumePerformanceClass"+"}", url.PathEscape(ParameterValueToString(volumePerformanceClassValue, "volumePerformanceClass")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := VolumePerformanceClass{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3422,26 +3423,26 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		volumePerformanceClass := "volumePerformanceClass"
+		projectId := projectIdValue
+		volumePerformanceClass := volumePerformanceClassValue
 
 		resp, reqErr := apiClient.GetVolumePerformanceClass(context.Background(), projectId, volumePerformanceClass).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListAffinityGroups", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/affinity-groups"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/affinity-groups"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := AffinityGroupListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3475,27 +3476,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListAffinityGroups(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListAttachedVolumes", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := VolumeAttachmentListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3529,24 +3530,24 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		resp, reqErr := apiClient.ListAttachedVolumes(context.Background(), projectId, serverId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListAvailabilityZones", func(t *testing.T) {
-		path := "/v1beta1/availability-zones"
+		_apiUrlPath := "/v1beta1/availability-zones"
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := AvailabilityZoneListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3585,18 +3586,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListBackups", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/backups"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/backups"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := BackupListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3630,25 +3631,25 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListBackups(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListImages", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ImageListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3682,23 +3683,23 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListImages(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListKeyPairs", func(t *testing.T) {
-		path := "/v1beta1/keypairs"
+		_apiUrlPath := "/v1beta1/keypairs"
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := KeyPairListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3737,18 +3738,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListMachineTypes", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/machine-types"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/machine-types"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := MachineTypeListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3782,27 +3783,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListMachineTypes(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListNetworkAreaProjects", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/projects"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/projects"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ProjectListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3836,28 +3837,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 
 		resp, reqErr := apiClient.ListNetworkAreaProjects(context.Background(), organizationId, areaId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListNetworkAreaRanges", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/network-ranges"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkRangeListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3891,28 +3892,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 
 		resp, reqErr := apiClient.ListNetworkAreaRanges(context.Background(), organizationId, areaId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListNetworkAreaRoutes", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := RouteListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3946,26 +3947,26 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 
 		resp, reqErr := apiClient.ListNetworkAreaRoutes(context.Background(), organizationId, areaId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListNetworkAreas", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkAreaListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -3999,25 +4000,25 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
+		organizationId := organizationIdValue
 
 		resp, reqErr := apiClient.ListNetworkAreas(context.Background(), organizationId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListNetworks", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4051,27 +4052,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListNetworks(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListNics", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}/nics"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}/nics"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NICListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4105,26 +4106,26 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
+		projectId := projectIdValue
+		networkId := networkIdValue
 
 		resp, reqErr := apiClient.ListNics(context.Background(), projectId, networkId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListProjectNICs", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/nics"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/nics"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NICListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4158,25 +4159,25 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListProjectNICs(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListPublicIPs", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/public-ips"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/public-ips"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := PublicIpListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4210,23 +4211,23 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListPublicIPs(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListPublicIpRanges", func(t *testing.T) {
-		path := "/v1beta1/networks/public-ip-ranges"
+		_apiUrlPath := "/v1beta1/networks/public-ip-ranges"
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := PublicNetworkListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4265,18 +4266,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListQuotas", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/quotas"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/quotas"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := QuotaListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4310,27 +4311,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListQuotas(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListSecurityGroupRules", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}/rules"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SecurityGroupRuleListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4364,26 +4365,26 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		securityGroupId := "securityGroupId"
+		projectId := projectIdValue
+		securityGroupId := securityGroupIdValue
 
 		resp, reqErr := apiClient.ListSecurityGroupRules(context.Background(), projectId, securityGroupId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListSecurityGroups", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SecurityGroupListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4417,27 +4418,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListSecurityGroups(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListServerNics", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/nics"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/nics"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NICListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4471,28 +4472,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		resp, reqErr := apiClient.ListServerNics(context.Background(), projectId, serverId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListServerServiceAccounts", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/service-accounts"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/service-accounts"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ServiceAccountMailListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4526,26 +4527,26 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		resp, reqErr := apiClient.ListServerServiceAccounts(context.Background(), projectId, serverId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListServers", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ServerListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4579,25 +4580,25 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListServers(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListSnapshots", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/snapshots"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/snapshots"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SnapshotListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4631,25 +4632,25 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListSnapshots(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListVolumePerformanceClasses", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volume-performance-classes"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volume-performance-classes"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := VolumePerformanceClassListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4683,25 +4684,25 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListVolumePerformanceClasses(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService ListVolumes", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volumes"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volumes"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := VolumeListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4735,27 +4736,27 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
+		projectId := projectIdValue
 
 		resp, reqErr := apiClient.ListVolumes(context.Background(), projectId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService PartialUpdateNetwork", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -4786,8 +4787,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
+		projectId := projectIdValue
+		networkId := networkIdValue
 		partialUpdateNetworkPayload := PartialUpdateNetworkPayload{}
 
 		reqErr := apiClient.PartialUpdateNetwork(context.Background(), projectId, networkId).PartialUpdateNetworkPayload(partialUpdateNetworkPayload).Execute()
@@ -4798,14 +4799,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService PartialUpdateNetworkArea", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NetworkArea{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -4839,8 +4840,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
 		partialUpdateNetworkAreaPayload := PartialUpdateNetworkAreaPayload{}
 
 		resp, reqErr := apiClient.PartialUpdateNetworkArea(context.Background(), organizationId, areaId).PartialUpdateNetworkAreaPayload(partialUpdateNetworkAreaPayload).Execute()
@@ -4848,20 +4849,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService RebootServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/reboot"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/reboot"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -4892,8 +4893,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		reqErr := apiClient.RebootServer(context.Background(), projectId, serverId).Execute()
 
@@ -4903,16 +4904,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService RemoveNetworkFromServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/networks/{networkId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/networks/{networkId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -4943,9 +4944,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		networkId := "networkId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		networkId := networkIdValue
 
 		reqErr := apiClient.RemoveNetworkFromServer(context.Background(), projectId, serverId, networkId).Execute()
 
@@ -4955,16 +4956,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService RemoveNicFromServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/nics/{nicId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		nicIdValue := "nicId"
-		path = strings.Replace(path, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/nics/{nicId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		nicIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -4995,9 +4996,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		nicId := "nicId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		nicId := nicIdValue
 
 		reqErr := apiClient.RemoveNicFromServer(context.Background(), projectId, serverId, nicId).Execute()
 
@@ -5007,16 +5008,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService RemovePublicIpFromServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/public-ips/{publicIpId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		publicIpIdValue := "publicIpId"
-		path = strings.Replace(path, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/public-ips/{publicIpId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		publicIpIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5047,9 +5048,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		publicIpId := "publicIpId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		publicIpId := publicIpIdValue
 
 		reqErr := apiClient.RemovePublicIpFromServer(context.Background(), projectId, serverId, publicIpId).Execute()
 
@@ -5059,16 +5060,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService RemoveSecurityGroupFromServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/security-groups/{securityGroupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/security-groups/{securityGroupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5099,9 +5100,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		securityGroupId := "securityGroupId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		securityGroupId := securityGroupIdValue
 
 		reqErr := apiClient.RemoveSecurityGroupFromServer(context.Background(), projectId, serverId, securityGroupId).Execute()
 
@@ -5111,16 +5112,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService RemoveServiceAccountFromServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/service-accounts/{serviceAccountMail}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/service-accounts/{serviceAccountMail}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 		serviceAccountMailValue := "serviceAccountMail"
-		path = strings.Replace(path, "{"+"serviceAccountMail"+"}", url.PathEscape(ParameterValueToString(serviceAccountMailValue, "serviceAccountMail")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serviceAccountMail"+"}", url.PathEscape(ParameterValueToString(serviceAccountMailValue, "serviceAccountMail")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ServiceAccountMailListResponse{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5154,31 +5155,31 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		serviceAccountMail := "serviceAccountMail"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		serviceAccountMail := serviceAccountMailValue
 
 		resp, reqErr := apiClient.RemoveServiceAccountFromServer(context.Background(), projectId, serverId, serviceAccountMail).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService RemoveVolumeFromServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5209,9 +5210,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		volumeId := volumeIdValue
 
 		reqErr := apiClient.RemoveVolumeFromServer(context.Background(), projectId, serverId, volumeId).Execute()
 
@@ -5221,14 +5222,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService RescueServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/rescue"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/rescue"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5259,8 +5260,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 		rescueServerPayload := RescueServerPayload{}
 
 		reqErr := apiClient.RescueServer(context.Background(), projectId, serverId).RescueServerPayload(rescueServerPayload).Execute()
@@ -5271,14 +5272,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService ResizeServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/resize"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/resize"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5309,8 +5310,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 		resizeServerPayload := ResizeServerPayload{}
 
 		reqErr := apiClient.ResizeServer(context.Background(), projectId, serverId).ResizeServerPayload(resizeServerPayload).Execute()
@@ -5321,14 +5322,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService ResizeVolume", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volumes/{volumeId}/resize"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volumes/{volumeId}/resize"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5359,8 +5360,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		volumeId := volumeIdValue
 
 		reqErr := apiClient.ResizeVolume(context.Background(), projectId, volumeId).Execute()
 
@@ -5370,14 +5371,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService RestoreBackup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/backups/{backupId}/restore"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		backupIdValue := "backupId"
-		path = strings.Replace(path, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/backups/{backupId}/restore"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		backupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5408,8 +5409,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		backupId := "backupId"
+		projectId := projectIdValue
+		backupId := backupIdValue
 
 		reqErr := apiClient.RestoreBackup(context.Background(), projectId, backupId).Execute()
 
@@ -5419,14 +5420,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService SetImageShare", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/share"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/share"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ImageShare{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5460,8 +5461,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 		setImageSharePayload := SetImageSharePayload{}
 
 		resp, reqErr := apiClient.SetImageShare(context.Background(), projectId, imageId).SetImageSharePayload(setImageSharePayload).Execute()
@@ -5469,20 +5470,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService StartServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/start"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/start"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5513,8 +5514,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		reqErr := apiClient.StartServer(context.Background(), projectId, serverId).Execute()
 
@@ -5524,14 +5525,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService StopServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/stop"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/stop"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5562,8 +5563,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		reqErr := apiClient.StopServer(context.Background(), projectId, serverId).Execute()
 
@@ -5573,14 +5574,14 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService UnrescueServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/unrescue"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/unrescue"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 		})
 		testServer := httptest.NewServer(testDefaultApiServeMux)
 		defer testServer.Close()
@@ -5611,8 +5612,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 
 		reqErr := apiClient.UnrescueServer(context.Background(), projectId, serverId).Execute()
 
@@ -5622,16 +5623,16 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 	})
 
 	t.Run("Test DefaultApiService UpdateAttachedVolume", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}/volume-attachments/{volumeId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := VolumeAttachment{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5665,9 +5666,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		serverId := serverIdValue
+		volumeId := volumeIdValue
 		updateAttachedVolumePayload := UpdateAttachedVolumePayload{}
 
 		resp, reqErr := apiClient.UpdateAttachedVolume(context.Background(), projectId, serverId, volumeId).UpdateAttachedVolumePayload(updateAttachedVolumePayload).Execute()
@@ -5675,20 +5676,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateBackup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/backups/{backupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		backupIdValue := "backupId"
-		path = strings.Replace(path, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/backups/{backupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		backupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"backupId"+"}", url.PathEscape(ParameterValueToString(backupIdValue, "backupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Backup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5722,8 +5723,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		backupId := "backupId"
+		projectId := projectIdValue
+		backupId := backupIdValue
 		updateBackupPayload := UpdateBackupPayload{}
 
 		resp, reqErr := apiClient.UpdateBackup(context.Background(), projectId, backupId).UpdateBackupPayload(updateBackupPayload).Execute()
@@ -5731,20 +5732,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateImage", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Image{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5778,8 +5779,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 		updateImagePayload := UpdateImagePayload{}
 
 		resp, reqErr := apiClient.UpdateImage(context.Background(), projectId, imageId).UpdateImagePayload(updateImagePayload).Execute()
@@ -5787,20 +5788,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateImageScopeLocal", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/publish"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/publish"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Image{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5834,28 +5835,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 
 		resp, reqErr := apiClient.UpdateImageScopeLocal(context.Background(), projectId, imageId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateImageScopePublic", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/publish"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/publish"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Image{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5889,28 +5890,28 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 
 		resp, reqErr := apiClient.UpdateImageScopePublic(context.Background(), projectId, imageId).Execute()
 
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateImageShare", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/images/{imageId}/share"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		imageIdValue := "imageId"
-		path = strings.Replace(path, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/images/{imageId}/share"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		imageIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"imageId"+"}", url.PathEscape(ParameterValueToString(imageIdValue, "imageId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := ImageShare{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5944,8 +5945,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		imageId := "imageId"
+		projectId := projectIdValue
+		imageId := imageIdValue
 		updateImageSharePayload := UpdateImageSharePayload{}
 
 		resp, reqErr := apiClient.UpdateImageShare(context.Background(), projectId, imageId).UpdateImageSharePayload(updateImageSharePayload).Execute()
@@ -5953,18 +5954,18 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateKeyPair", func(t *testing.T) {
-		path := "/v1beta1/keypairs/{keypairName}"
+		_apiUrlPath := "/v1beta1/keypairs/{keypairName}"
 		keypairNameValue := "keypairName"
-		path = strings.Replace(path, "{"+"keypairName"+"}", url.PathEscape(ParameterValueToString(keypairNameValue, "keypairName")), -1)
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"keypairName"+"}", url.PathEscape(ParameterValueToString(keypairNameValue, "keypairName")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Keypair{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -5998,7 +5999,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		keypairName := "keypairName"
+		keypairName := keypairNameValue
 		updateKeyPairPayload := UpdateKeyPairPayload{}
 
 		resp, reqErr := apiClient.UpdateKeyPair(context.Background(), keypairName).UpdateKeyPairPayload(updateKeyPairPayload).Execute()
@@ -6006,22 +6007,22 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateNetworkAreaRoute", func(t *testing.T) {
-		path := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes/{routeId}"
-		organizationIdValue := "organizationId"
-		path = strings.Replace(path, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
-		areaIdValue := "areaId"
-		path = strings.Replace(path, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
-		routeIdValue := "routeId"
-		path = strings.Replace(path, "{"+"routeId"+"}", url.PathEscape(ParameterValueToString(routeIdValue, "routeId")), -1)
+		_apiUrlPath := "/v1beta1/organizations/{organizationId}/network-areas/{areaId}/routes/{routeId}"
+		organizationIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"organizationId"+"}", url.PathEscape(ParameterValueToString(organizationIdValue, "organizationId")), -1)
+		areaIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"areaId"+"}", url.PathEscape(ParameterValueToString(areaIdValue, "areaId")), -1)
+		routeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"routeId"+"}", url.PathEscape(ParameterValueToString(routeIdValue, "routeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Route{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -6055,9 +6056,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		organizationId := "organizationId"
-		areaId := "areaId"
-		routeId := "routeId"
+		organizationId := organizationIdValue
+		areaId := areaIdValue
+		routeId := routeIdValue
 		updateNetworkAreaRoutePayload := UpdateNetworkAreaRoutePayload{}
 
 		resp, reqErr := apiClient.UpdateNetworkAreaRoute(context.Background(), organizationId, areaId, routeId).UpdateNetworkAreaRoutePayload(updateNetworkAreaRoutePayload).Execute()
@@ -6065,22 +6066,22 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateNic", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/networks/{networkId}/nics/{nicId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		networkIdValue := "networkId"
-		path = strings.Replace(path, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
-		nicIdValue := "nicId"
-		path = strings.Replace(path, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/networks/{networkId}/nics/{nicId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		networkIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"networkId"+"}", url.PathEscape(ParameterValueToString(networkIdValue, "networkId")), -1)
+		nicIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"nicId"+"}", url.PathEscape(ParameterValueToString(nicIdValue, "nicId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := NIC{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -6114,9 +6115,9 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		networkId := "networkId"
-		nicId := "nicId"
+		projectId := projectIdValue
+		networkId := networkIdValue
+		nicId := nicIdValue
 		updateNicPayload := UpdateNicPayload{}
 
 		resp, reqErr := apiClient.UpdateNic(context.Background(), projectId, networkId, nicId).UpdateNicPayload(updateNicPayload).Execute()
@@ -6124,20 +6125,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdatePublicIP", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/public-ips/{publicIpId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		publicIpIdValue := "publicIpId"
-		path = strings.Replace(path, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/public-ips/{publicIpId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		publicIpIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"publicIpId"+"}", url.PathEscape(ParameterValueToString(publicIpIdValue, "publicIpId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := PublicIp{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -6171,8 +6172,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		publicIpId := "publicIpId"
+		projectId := projectIdValue
+		publicIpId := publicIpIdValue
 		updatePublicIPPayload := UpdatePublicIPPayload{}
 
 		resp, reqErr := apiClient.UpdatePublicIP(context.Background(), projectId, publicIpId).UpdatePublicIPPayload(updatePublicIPPayload).Execute()
@@ -6180,20 +6181,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateSecurityGroup", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		securityGroupIdValue := "securityGroupId"
-		path = strings.Replace(path, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/security-groups/{securityGroupId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		securityGroupIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"securityGroupId"+"}", url.PathEscape(ParameterValueToString(securityGroupIdValue, "securityGroupId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := SecurityGroup{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -6227,8 +6228,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		securityGroupId := "securityGroupId"
+		projectId := projectIdValue
+		securityGroupId := securityGroupIdValue
 		updateSecurityGroupPayload := UpdateSecurityGroupPayload{}
 
 		resp, reqErr := apiClient.UpdateSecurityGroup(context.Background(), projectId, securityGroupId).UpdateSecurityGroupPayload(updateSecurityGroupPayload).Execute()
@@ -6236,20 +6237,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateServer", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/servers/{serverId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		serverIdValue := "serverId"
-		path = strings.Replace(path, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/servers/{serverId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		serverIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"serverId"+"}", url.PathEscape(ParameterValueToString(serverIdValue, "serverId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Server{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -6283,8 +6284,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		serverId := "serverId"
+		projectId := projectIdValue
+		serverId := serverIdValue
 		updateServerPayload := UpdateServerPayload{}
 
 		resp, reqErr := apiClient.UpdateServer(context.Background(), projectId, serverId).UpdateServerPayload(updateServerPayload).Execute()
@@ -6292,20 +6293,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateSnapshot", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/snapshots/{snapshotId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		snapshotIdValue := "snapshotId"
-		path = strings.Replace(path, "{"+"snapshotId"+"}", url.PathEscape(ParameterValueToString(snapshotIdValue, "snapshotId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/snapshots/{snapshotId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		snapshotIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"snapshotId"+"}", url.PathEscape(ParameterValueToString(snapshotIdValue, "snapshotId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Snapshot{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -6339,8 +6340,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		snapshotId := "snapshotId"
+		projectId := projectIdValue
+		snapshotId := snapshotIdValue
 		updateSnapshotPayload := UpdateSnapshotPayload{}
 
 		resp, reqErr := apiClient.UpdateSnapshot(context.Background(), projectId, snapshotId).UpdateSnapshotPayload(updateSnapshotPayload).Execute()
@@ -6348,20 +6349,20 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
 
 	t.Run("Test DefaultApiService UpdateVolume", func(t *testing.T) {
-		path := "/v1beta1/projects/{projectId}/volumes/{volumeId}"
-		projectIdValue := "projectId"
-		path = strings.Replace(path, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
-		volumeIdValue := "volumeId"
-		path = strings.Replace(path, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
+		_apiUrlPath := "/v1beta1/projects/{projectId}/volumes/{volumeId}"
+		projectIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"projectId"+"}", url.PathEscape(ParameterValueToString(projectIdValue, "projectId")), -1)
+		volumeIdValue := uuid.NewString()
+		_apiUrlPath = strings.Replace(_apiUrlPath, "{"+"volumeId"+"}", url.PathEscape(ParameterValueToString(volumeIdValue, "volumeId")), -1)
 
 		testDefaultApiServeMux := http.NewServeMux()
-		testDefaultApiServeMux.HandleFunc(path, func(w http.ResponseWriter, req *http.Request) {
+		testDefaultApiServeMux.HandleFunc(_apiUrlPath, func(w http.ResponseWriter, req *http.Request) {
 			data := Volume{}
 			w.Header().Add("Content-Type", "application/json")
 			json.NewEncoder(w).Encode(data)
@@ -6395,8 +6396,8 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 			t.Fatalf("creating API client: %v", err)
 		}
 
-		projectId := "projectId"
-		volumeId := "volumeId"
+		projectId := projectIdValue
+		volumeId := volumeIdValue
 		updateVolumePayload := UpdateVolumePayload{}
 
 		resp, reqErr := apiClient.UpdateVolume(context.Background(), projectId, volumeId).UpdateVolumePayload(updateVolumePayload).Execute()
@@ -6404,7 +6405,7 @@ func Test_iaas_DefaultApiService(t *testing.T) {
 		if reqErr != nil {
 			t.Fatalf("error in call: %v", reqErr)
 		}
-		if resp == nil {
+		if IsNil(resp) {
 			t.Fatalf("response not present")
 		}
 	})
diff --git a/services/iaas/go.mod b/services/iaas/go.mod
index 95cdd8fb9..088df514b 100644
--- a/services/iaas/go.mod
+++ b/services/iaas/go.mod
@@ -4,10 +4,8 @@ go 1.21
 
 require (
 	github.com/google/go-cmp v0.7.0
+	github.com/google/uuid v1.6.0
 	github.com/stackitcloud/stackit-sdk-go/core v0.16.0
 )
 
-require (
-	github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
-	github.com/google/uuid v1.6.0 // indirect
-)
+require github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
diff --git a/services/iaas/model_add_volume_to_server_payload.go b/services/iaas/model_add_volume_to_server_payload.go
index bc8ca90b7..bf3145955 100644
--- a/services/iaas/model_add_volume_to_server_payload.go
+++ b/services/iaas/model_add_volume_to_server_payload.go
@@ -17,14 +17,76 @@ import (
 // checks if the AddVolumeToServerPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &AddVolumeToServerPayload{}
 
+/*
+	types and functions for deleteOnTermination
+*/
+
+// isBoolean
+type AddVolumeToServerPayloadgetDeleteOnTerminationAttributeType = *bool
+type AddVolumeToServerPayloadgetDeleteOnTerminationArgType = bool
+type AddVolumeToServerPayloadgetDeleteOnTerminationRetType = bool
+
+func getAddVolumeToServerPayloadgetDeleteOnTerminationAttributeTypeOk(arg AddVolumeToServerPayloadgetDeleteOnTerminationAttributeType) (ret AddVolumeToServerPayloadgetDeleteOnTerminationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAddVolumeToServerPayloadgetDeleteOnTerminationAttributeType(arg *AddVolumeToServerPayloadgetDeleteOnTerminationAttributeType, val AddVolumeToServerPayloadgetDeleteOnTerminationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for serverId
+*/
+
+// isNotNullableString
+type AddVolumeToServerPayloadGetServerIdAttributeType = *string
+
+func getAddVolumeToServerPayloadGetServerIdAttributeTypeOk(arg AddVolumeToServerPayloadGetServerIdAttributeType) (ret AddVolumeToServerPayloadGetServerIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAddVolumeToServerPayloadGetServerIdAttributeType(arg *AddVolumeToServerPayloadGetServerIdAttributeType, val AddVolumeToServerPayloadGetServerIdRetType) {
+	*arg = &val
+}
+
+type AddVolumeToServerPayloadGetServerIdArgType = string
+type AddVolumeToServerPayloadGetServerIdRetType = string
+
+/*
+	types and functions for volumeId
+*/
+
+// isNotNullableString
+type AddVolumeToServerPayloadGetVolumeIdAttributeType = *string
+
+func getAddVolumeToServerPayloadGetVolumeIdAttributeTypeOk(arg AddVolumeToServerPayloadGetVolumeIdAttributeType) (ret AddVolumeToServerPayloadGetVolumeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAddVolumeToServerPayloadGetVolumeIdAttributeType(arg *AddVolumeToServerPayloadGetVolumeIdAttributeType, val AddVolumeToServerPayloadGetVolumeIdRetType) {
+	*arg = &val
+}
+
+type AddVolumeToServerPayloadGetVolumeIdArgType = string
+type AddVolumeToServerPayloadGetVolumeIdRetType = string
+
 // AddVolumeToServerPayload Object that represents a Volume attachment to a server.
 type AddVolumeToServerPayload struct {
 	// Delete the volume during the termination of the server. Defaults to false.
-	DeleteOnTermination *bool `json:"deleteOnTermination,omitempty"`
+	DeleteOnTermination AddVolumeToServerPayloadgetDeleteOnTerminationAttributeType `json:"deleteOnTermination,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ServerId *string `json:"serverId,omitempty"`
+	ServerId AddVolumeToServerPayloadGetServerIdAttributeType `json:"serverId,omitempty"`
 	// Universally Unique Identifier (UUID).
-	VolumeId *string `json:"volumeId,omitempty"`
+	VolumeId AddVolumeToServerPayloadGetVolumeIdAttributeType `json:"volumeId,omitempty"`
 }
 
 // NewAddVolumeToServerPayload instantiates a new AddVolumeToServerPayload object
@@ -45,111 +107,84 @@ func NewAddVolumeToServerPayloadWithDefaults() *AddVolumeToServerPayload {
 }
 
 // GetDeleteOnTermination returns the DeleteOnTermination field value if set, zero value otherwise.
-func (o *AddVolumeToServerPayload) GetDeleteOnTermination() *bool {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		var ret *bool
-		return ret
-	}
-	return o.DeleteOnTermination
+func (o *AddVolumeToServerPayload) GetDeleteOnTermination() (res AddVolumeToServerPayloadgetDeleteOnTerminationRetType) {
+	res, _ = o.GetDeleteOnTerminationOk()
+	return
 }
 
 // GetDeleteOnTerminationOk returns a tuple with the DeleteOnTermination field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AddVolumeToServerPayload) GetDeleteOnTerminationOk() (*bool, bool) {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		return nil, false
-	}
-	return o.DeleteOnTermination, true
+func (o *AddVolumeToServerPayload) GetDeleteOnTerminationOk() (ret AddVolumeToServerPayloadgetDeleteOnTerminationRetType, ok bool) {
+	return getAddVolumeToServerPayloadgetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination)
 }
 
 // HasDeleteOnTermination returns a boolean if a field has been set.
 func (o *AddVolumeToServerPayload) HasDeleteOnTermination() bool {
-	if o != nil && !IsNil(o.DeleteOnTermination) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDeleteOnTerminationOk()
+	return ok
 }
 
 // SetDeleteOnTermination gets a reference to the given bool and assigns it to the DeleteOnTermination field.
-func (o *AddVolumeToServerPayload) SetDeleteOnTermination(v *bool) {
-	o.DeleteOnTermination = v
+func (o *AddVolumeToServerPayload) SetDeleteOnTermination(v AddVolumeToServerPayloadgetDeleteOnTerminationRetType) {
+	setAddVolumeToServerPayloadgetDeleteOnTerminationAttributeType(&o.DeleteOnTermination, v)
 }
 
 // GetServerId returns the ServerId field value if set, zero value otherwise.
-func (o *AddVolumeToServerPayload) GetServerId() *string {
-	if o == nil || IsNil(o.ServerId) {
-		var ret *string
-		return ret
-	}
-	return o.ServerId
+func (o *AddVolumeToServerPayload) GetServerId() (res AddVolumeToServerPayloadGetServerIdRetType) {
+	res, _ = o.GetServerIdOk()
+	return
 }
 
 // GetServerIdOk returns a tuple with the ServerId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AddVolumeToServerPayload) GetServerIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ServerId) {
-		return nil, false
-	}
-	return o.ServerId, true
+func (o *AddVolumeToServerPayload) GetServerIdOk() (ret AddVolumeToServerPayloadGetServerIdRetType, ok bool) {
+	return getAddVolumeToServerPayloadGetServerIdAttributeTypeOk(o.ServerId)
 }
 
 // HasServerId returns a boolean if a field has been set.
 func (o *AddVolumeToServerPayload) HasServerId() bool {
-	if o != nil && !IsNil(o.ServerId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetServerIdOk()
+	return ok
 }
 
 // SetServerId gets a reference to the given string and assigns it to the ServerId field.
-func (o *AddVolumeToServerPayload) SetServerId(v *string) {
-	o.ServerId = v
+func (o *AddVolumeToServerPayload) SetServerId(v AddVolumeToServerPayloadGetServerIdRetType) {
+	setAddVolumeToServerPayloadGetServerIdAttributeType(&o.ServerId, v)
 }
 
 // GetVolumeId returns the VolumeId field value if set, zero value otherwise.
-func (o *AddVolumeToServerPayload) GetVolumeId() *string {
-	if o == nil || IsNil(o.VolumeId) {
-		var ret *string
-		return ret
-	}
-	return o.VolumeId
+func (o *AddVolumeToServerPayload) GetVolumeId() (res AddVolumeToServerPayloadGetVolumeIdRetType) {
+	res, _ = o.GetVolumeIdOk()
+	return
 }
 
 // GetVolumeIdOk returns a tuple with the VolumeId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AddVolumeToServerPayload) GetVolumeIdOk() (*string, bool) {
-	if o == nil || IsNil(o.VolumeId) {
-		return nil, false
-	}
-	return o.VolumeId, true
+func (o *AddVolumeToServerPayload) GetVolumeIdOk() (ret AddVolumeToServerPayloadGetVolumeIdRetType, ok bool) {
+	return getAddVolumeToServerPayloadGetVolumeIdAttributeTypeOk(o.VolumeId)
 }
 
 // HasVolumeId returns a boolean if a field has been set.
 func (o *AddVolumeToServerPayload) HasVolumeId() bool {
-	if o != nil && !IsNil(o.VolumeId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVolumeIdOk()
+	return ok
 }
 
 // SetVolumeId gets a reference to the given string and assigns it to the VolumeId field.
-func (o *AddVolumeToServerPayload) SetVolumeId(v *string) {
-	o.VolumeId = v
+func (o *AddVolumeToServerPayload) SetVolumeId(v AddVolumeToServerPayloadGetVolumeIdRetType) {
+	setAddVolumeToServerPayloadGetVolumeIdAttributeType(&o.VolumeId, v)
 }
 
 func (o AddVolumeToServerPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DeleteOnTermination) {
-		toSerialize["deleteOnTermination"] = o.DeleteOnTermination
+	if val, ok := getAddVolumeToServerPayloadgetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination); ok {
+		toSerialize["DeleteOnTermination"] = val
 	}
-	if !IsNil(o.ServerId) {
-		toSerialize["serverId"] = o.ServerId
+	if val, ok := getAddVolumeToServerPayloadGetServerIdAttributeTypeOk(o.ServerId); ok {
+		toSerialize["ServerId"] = val
 	}
-	if !IsNil(o.VolumeId) {
-		toSerialize["volumeId"] = o.VolumeId
+	if val, ok := getAddVolumeToServerPayloadGetVolumeIdAttributeTypeOk(o.VolumeId); ok {
+		toSerialize["VolumeId"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_affinity_group.go b/services/iaas/model_affinity_group.go
index 944aef774..b0906fa53 100644
--- a/services/iaas/model_affinity_group.go
+++ b/services/iaas/model_affinity_group.go
@@ -17,18 +17,101 @@ import (
 // checks if the AffinityGroup type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &AffinityGroup{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type AffinityGroupGetIdAttributeType = *string
+
+func getAffinityGroupGetIdAttributeTypeOk(arg AffinityGroupGetIdAttributeType) (ret AffinityGroupGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAffinityGroupGetIdAttributeType(arg *AffinityGroupGetIdAttributeType, val AffinityGroupGetIdRetType) {
+	*arg = &val
+}
+
+type AffinityGroupGetIdArgType = string
+type AffinityGroupGetIdRetType = string
+
+/*
+	types and functions for members
+*/
+
+// isArray
+type AffinityGroupGetMembersAttributeType = *[]string
+type AffinityGroupGetMembersArgType = []string
+type AffinityGroupGetMembersRetType = []string
+
+func getAffinityGroupGetMembersAttributeTypeOk(arg AffinityGroupGetMembersAttributeType) (ret AffinityGroupGetMembersRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAffinityGroupGetMembersAttributeType(arg *AffinityGroupGetMembersAttributeType, val AffinityGroupGetMembersRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type AffinityGroupGetNameAttributeType = *string
+
+func getAffinityGroupGetNameAttributeTypeOk(arg AffinityGroupGetNameAttributeType) (ret AffinityGroupGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAffinityGroupGetNameAttributeType(arg *AffinityGroupGetNameAttributeType, val AffinityGroupGetNameRetType) {
+	*arg = &val
+}
+
+type AffinityGroupGetNameArgType = string
+type AffinityGroupGetNameRetType = string
+
+/*
+	types and functions for policy
+*/
+
+// isNotNullableString
+type AffinityGroupGetPolicyAttributeType = *string
+
+func getAffinityGroupGetPolicyAttributeTypeOk(arg AffinityGroupGetPolicyAttributeType) (ret AffinityGroupGetPolicyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAffinityGroupGetPolicyAttributeType(arg *AffinityGroupGetPolicyAttributeType, val AffinityGroupGetPolicyRetType) {
+	*arg = &val
+}
+
+type AffinityGroupGetPolicyArgType = string
+type AffinityGroupGetPolicyRetType = string
+
 // AffinityGroup Definition of an affinity group.
 type AffinityGroup struct {
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id AffinityGroupGetIdAttributeType `json:"id,omitempty"`
 	// The servers that are part of the affinity group.
-	Members *[]string `json:"members,omitempty"`
+	Members AffinityGroupGetMembersAttributeType `json:"members,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name AffinityGroupGetNameAttributeType `json:"name"`
 	// The affinity group policy. `hard-affinity`: All servers in this group will be hosted on the same compute node. `soft-affinity`: All servers in this group will be hosted on as few compute nodes as possible. `hard-anti-affinity`: All servers in this group will be hosted on different compute nodes. `soft-anti-affinity`: All servers in this group will be hosted on as many compute nodes as possible. Possible values: `hard-anti-affinity`, `hard-affinity`, `soft-anti-affinity`, `soft-affinity`.
 	// REQUIRED
-	Policy *string `json:"policy"`
+	Policy AffinityGroupGetPolicyAttributeType `json:"policy"`
 }
 
 type _AffinityGroup AffinityGroup
@@ -37,10 +120,10 @@ type _AffinityGroup AffinityGroup
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewAffinityGroup(name *string, policy *string) *AffinityGroup {
+func NewAffinityGroup(name AffinityGroupGetNameArgType, policy AffinityGroupGetPolicyArgType) *AffinityGroup {
 	this := AffinityGroup{}
-	this.Name = name
-	this.Policy = policy
+	setAffinityGroupGetNameAttributeType(&this.Name, name)
+	setAffinityGroupGetPolicyAttributeType(&this.Policy, policy)
 	return &this
 }
 
@@ -53,127 +136,99 @@ func NewAffinityGroupWithDefaults() *AffinityGroup {
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *AffinityGroup) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *AffinityGroup) GetId() (res AffinityGroupGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AffinityGroup) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *AffinityGroup) GetIdOk() (ret AffinityGroupGetIdRetType, ok bool) {
+	return getAffinityGroupGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *AffinityGroup) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *AffinityGroup) SetId(v *string) {
-	o.Id = v
+func (o *AffinityGroup) SetId(v AffinityGroupGetIdRetType) {
+	setAffinityGroupGetIdAttributeType(&o.Id, v)
 }
 
 // GetMembers returns the Members field value if set, zero value otherwise.
-func (o *AffinityGroup) GetMembers() *[]string {
-	if o == nil || IsNil(o.Members) {
-		var ret *[]string
-		return ret
-	}
-	return o.Members
+func (o *AffinityGroup) GetMembers() (res AffinityGroupGetMembersRetType) {
+	res, _ = o.GetMembersOk()
+	return
 }
 
 // GetMembersOk returns a tuple with the Members field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AffinityGroup) GetMembersOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Members) {
-		return nil, false
-	}
-	return o.Members, true
+func (o *AffinityGroup) GetMembersOk() (ret AffinityGroupGetMembersRetType, ok bool) {
+	return getAffinityGroupGetMembersAttributeTypeOk(o.Members)
 }
 
 // HasMembers returns a boolean if a field has been set.
 func (o *AffinityGroup) HasMembers() bool {
-	if o != nil && !IsNil(o.Members) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMembersOk()
+	return ok
 }
 
 // SetMembers gets a reference to the given []string and assigns it to the Members field.
-func (o *AffinityGroup) SetMembers(v *[]string) {
-	o.Members = v
+func (o *AffinityGroup) SetMembers(v AffinityGroupGetMembersRetType) {
+	setAffinityGroupGetMembersAttributeType(&o.Members, v)
 }
 
 // GetName returns the Name field value
-func (o *AffinityGroup) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *AffinityGroup) GetName() (ret AffinityGroupGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *AffinityGroup) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *AffinityGroup) GetNameOk() (ret AffinityGroupGetNameRetType, ok bool) {
+	return getAffinityGroupGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *AffinityGroup) SetName(v *string) {
-	o.Name = v
+func (o *AffinityGroup) SetName(v AffinityGroupGetNameRetType) {
+	setAffinityGroupGetNameAttributeType(&o.Name, v)
 }
 
 // GetPolicy returns the Policy field value
-func (o *AffinityGroup) GetPolicy() *string {
-	if o == nil || IsNil(o.Policy) {
-		var ret *string
-		return ret
-	}
-
-	return o.Policy
+func (o *AffinityGroup) GetPolicy() (ret AffinityGroupGetPolicyRetType) {
+	ret, _ = o.GetPolicyOk()
+	return ret
 }
 
 // GetPolicyOk returns a tuple with the Policy field value
 // and a boolean to check if the value has been set.
-func (o *AffinityGroup) GetPolicyOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Policy, true
+func (o *AffinityGroup) GetPolicyOk() (ret AffinityGroupGetPolicyRetType, ok bool) {
+	return getAffinityGroupGetPolicyAttributeTypeOk(o.Policy)
 }
 
 // SetPolicy sets field value
-func (o *AffinityGroup) SetPolicy(v *string) {
-	o.Policy = v
+func (o *AffinityGroup) SetPolicy(v AffinityGroupGetPolicyRetType) {
+	setAffinityGroupGetPolicyAttributeType(&o.Policy, v)
 }
 
 func (o AffinityGroup) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getAffinityGroupGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
+	}
+	if val, ok := getAffinityGroupGetMembersAttributeTypeOk(o.Members); ok {
+		toSerialize["Members"] = val
+	}
+	if val, ok := getAffinityGroupGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Members) {
-		toSerialize["members"] = o.Members
+	if val, ok := getAffinityGroupGetPolicyAttributeTypeOk(o.Policy); ok {
+		toSerialize["Policy"] = val
 	}
-	toSerialize["name"] = o.Name
-	toSerialize["policy"] = o.Policy
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_affinity_group_list_response.go b/services/iaas/model_affinity_group_list_response.go
index d58d96ba8..d8c177dbc 100644
--- a/services/iaas/model_affinity_group_list_response.go
+++ b/services/iaas/model_affinity_group_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the AffinityGroupListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &AffinityGroupListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type AffinityGroupListResponseGetItemsAttributeType = *[]AffinityGroup
+type AffinityGroupListResponseGetItemsArgType = []AffinityGroup
+type AffinityGroupListResponseGetItemsRetType = []AffinityGroup
+
+func getAffinityGroupListResponseGetItemsAttributeTypeOk(arg AffinityGroupListResponseGetItemsAttributeType) (ret AffinityGroupListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAffinityGroupListResponseGetItemsAttributeType(arg *AffinityGroupListResponseGetItemsAttributeType, val AffinityGroupListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // AffinityGroupListResponse Response object for affinity group list request.
 type AffinityGroupListResponse struct {
 	// A list of affinity groups.
 	// REQUIRED
-	Items *[]AffinityGroup `json:"items"`
+	Items AffinityGroupListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _AffinityGroupListResponse AffinityGroupListResponse
@@ -30,9 +50,9 @@ type _AffinityGroupListResponse AffinityGroupListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewAffinityGroupListResponse(items *[]AffinityGroup) *AffinityGroupListResponse {
+func NewAffinityGroupListResponse(items AffinityGroupListResponseGetItemsArgType) *AffinityGroupListResponse {
 	this := AffinityGroupListResponse{}
-	this.Items = items
+	setAffinityGroupListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewAffinityGroupListResponseWithDefaults() *AffinityGroupListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *AffinityGroupListResponse) GetItems() *[]AffinityGroup {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]AffinityGroup
-		return ret
-	}
-
-	return o.Items
+func (o *AffinityGroupListResponse) GetItems() (ret AffinityGroupListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *AffinityGroupListResponse) GetItemsOk() (*[]AffinityGroup, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *AffinityGroupListResponse) GetItemsOk() (ret AffinityGroupListResponseGetItemsRetType, ok bool) {
+	return getAffinityGroupListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *AffinityGroupListResponse) SetItems(v *[]AffinityGroup) {
-	o.Items = v
+func (o *AffinityGroupListResponse) SetItems(v AffinityGroupListResponseGetItemsRetType) {
+	setAffinityGroupListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o AffinityGroupListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getAffinityGroupListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_area.go b/services/iaas/model_area.go
index 2f1acd941..8bf723131 100644
--- a/services/iaas/model_area.go
+++ b/services/iaas/model_area.go
@@ -17,16 +17,97 @@ import (
 // checks if the Area type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Area{}
 
+/*
+	types and functions for defaultNameservers
+*/
+
+// isArray
+type AreaGetDefaultNameserversAttributeType = *[]string
+type AreaGetDefaultNameserversArgType = []string
+type AreaGetDefaultNameserversRetType = []string
+
+func getAreaGetDefaultNameserversAttributeTypeOk(arg AreaGetDefaultNameserversAttributeType) (ret AreaGetDefaultNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaGetDefaultNameserversAttributeType(arg *AreaGetDefaultNameserversAttributeType, val AreaGetDefaultNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkRanges
+*/
+
+// isArray
+type AreaGetNetworkRangesAttributeType = *[]NetworkRange
+type AreaGetNetworkRangesArgType = []NetworkRange
+type AreaGetNetworkRangesRetType = []NetworkRange
+
+func getAreaGetNetworkRangesAttributeTypeOk(arg AreaGetNetworkRangesAttributeType) (ret AreaGetNetworkRangesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaGetNetworkRangesAttributeType(arg *AreaGetNetworkRangesAttributeType, val AreaGetNetworkRangesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for routes
+*/
+
+// isArray
+type AreaGetRoutesAttributeType = *[]Route
+type AreaGetRoutesArgType = []Route
+type AreaGetRoutesRetType = []Route
+
+func getAreaGetRoutesAttributeTypeOk(arg AreaGetRoutesAttributeType) (ret AreaGetRoutesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaGetRoutesAttributeType(arg *AreaGetRoutesAttributeType, val AreaGetRoutesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for transferNetwork
+*/
+
+// isNotNullableString
+type AreaGetTransferNetworkAttributeType = *string
+
+func getAreaGetTransferNetworkAttributeTypeOk(arg AreaGetTransferNetworkAttributeType) (ret AreaGetTransferNetworkRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaGetTransferNetworkAttributeType(arg *AreaGetTransferNetworkAttributeType, val AreaGetTransferNetworkRetType) {
+	*arg = &val
+}
+
+type AreaGetTransferNetworkArgType = string
+type AreaGetTransferNetworkRetType = string
+
 // Area The basic properties of a network area.
 type Area struct {
 	// A list containing DNS Servers/Nameservers for IPv4.
-	DefaultNameservers *[]string `json:"defaultNameservers,omitempty"`
+	DefaultNameservers AreaGetDefaultNameserversAttributeType `json:"defaultNameservers,omitempty"`
 	// A list of network ranges.
-	NetworkRanges *[]NetworkRange `json:"networkRanges,omitempty"`
+	NetworkRanges AreaGetNetworkRangesAttributeType `json:"networkRanges,omitempty"`
 	// A list of routes.
-	Routes *[]Route `json:"routes,omitempty"`
+	Routes AreaGetRoutesAttributeType `json:"routes,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
-	TransferNetwork *string `json:"transferNetwork,omitempty"`
+	TransferNetwork AreaGetTransferNetworkAttributeType `json:"transferNetwork,omitempty"`
 }
 
 // NewArea instantiates a new Area object
@@ -47,146 +128,110 @@ func NewAreaWithDefaults() *Area {
 }
 
 // GetDefaultNameservers returns the DefaultNameservers field value if set, zero value otherwise.
-func (o *Area) GetDefaultNameservers() *[]string {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.DefaultNameservers
+func (o *Area) GetDefaultNameservers() (res AreaGetDefaultNameserversRetType) {
+	res, _ = o.GetDefaultNameserversOk()
+	return
 }
 
 // GetDefaultNameserversOk returns a tuple with the DefaultNameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Area) GetDefaultNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		return nil, false
-	}
-	return o.DefaultNameservers, true
+func (o *Area) GetDefaultNameserversOk() (ret AreaGetDefaultNameserversRetType, ok bool) {
+	return getAreaGetDefaultNameserversAttributeTypeOk(o.DefaultNameservers)
 }
 
 // HasDefaultNameservers returns a boolean if a field has been set.
 func (o *Area) HasDefaultNameservers() bool {
-	if o != nil && !IsNil(o.DefaultNameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultNameserversOk()
+	return ok
 }
 
 // SetDefaultNameservers gets a reference to the given []string and assigns it to the DefaultNameservers field.
-func (o *Area) SetDefaultNameservers(v *[]string) {
-	o.DefaultNameservers = v
+func (o *Area) SetDefaultNameservers(v AreaGetDefaultNameserversRetType) {
+	setAreaGetDefaultNameserversAttributeType(&o.DefaultNameservers, v)
 }
 
 // GetNetworkRanges returns the NetworkRanges field value if set, zero value otherwise.
-func (o *Area) GetNetworkRanges() *[]NetworkRange {
-	if o == nil || IsNil(o.NetworkRanges) {
-		var ret *[]NetworkRange
-		return ret
-	}
-	return o.NetworkRanges
+func (o *Area) GetNetworkRanges() (res AreaGetNetworkRangesRetType) {
+	res, _ = o.GetNetworkRangesOk()
+	return
 }
 
 // GetNetworkRangesOk returns a tuple with the NetworkRanges field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Area) GetNetworkRangesOk() (*[]NetworkRange, bool) {
-	if o == nil || IsNil(o.NetworkRanges) {
-		return nil, false
-	}
-	return o.NetworkRanges, true
+func (o *Area) GetNetworkRangesOk() (ret AreaGetNetworkRangesRetType, ok bool) {
+	return getAreaGetNetworkRangesAttributeTypeOk(o.NetworkRanges)
 }
 
 // HasNetworkRanges returns a boolean if a field has been set.
 func (o *Area) HasNetworkRanges() bool {
-	if o != nil && !IsNil(o.NetworkRanges) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkRangesOk()
+	return ok
 }
 
 // SetNetworkRanges gets a reference to the given []NetworkRange and assigns it to the NetworkRanges field.
-func (o *Area) SetNetworkRanges(v *[]NetworkRange) {
-	o.NetworkRanges = v
+func (o *Area) SetNetworkRanges(v AreaGetNetworkRangesRetType) {
+	setAreaGetNetworkRangesAttributeType(&o.NetworkRanges, v)
 }
 
 // GetRoutes returns the Routes field value if set, zero value otherwise.
-func (o *Area) GetRoutes() *[]Route {
-	if o == nil || IsNil(o.Routes) {
-		var ret *[]Route
-		return ret
-	}
-	return o.Routes
+func (o *Area) GetRoutes() (res AreaGetRoutesRetType) {
+	res, _ = o.GetRoutesOk()
+	return
 }
 
 // GetRoutesOk returns a tuple with the Routes field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Area) GetRoutesOk() (*[]Route, bool) {
-	if o == nil || IsNil(o.Routes) {
-		return nil, false
-	}
-	return o.Routes, true
+func (o *Area) GetRoutesOk() (ret AreaGetRoutesRetType, ok bool) {
+	return getAreaGetRoutesAttributeTypeOk(o.Routes)
 }
 
 // HasRoutes returns a boolean if a field has been set.
 func (o *Area) HasRoutes() bool {
-	if o != nil && !IsNil(o.Routes) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRoutesOk()
+	return ok
 }
 
 // SetRoutes gets a reference to the given []Route and assigns it to the Routes field.
-func (o *Area) SetRoutes(v *[]Route) {
-	o.Routes = v
+func (o *Area) SetRoutes(v AreaGetRoutesRetType) {
+	setAreaGetRoutesAttributeType(&o.Routes, v)
 }
 
 // GetTransferNetwork returns the TransferNetwork field value if set, zero value otherwise.
-func (o *Area) GetTransferNetwork() *string {
-	if o == nil || IsNil(o.TransferNetwork) {
-		var ret *string
-		return ret
-	}
-	return o.TransferNetwork
+func (o *Area) GetTransferNetwork() (res AreaGetTransferNetworkRetType) {
+	res, _ = o.GetTransferNetworkOk()
+	return
 }
 
 // GetTransferNetworkOk returns a tuple with the TransferNetwork field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Area) GetTransferNetworkOk() (*string, bool) {
-	if o == nil || IsNil(o.TransferNetwork) {
-		return nil, false
-	}
-	return o.TransferNetwork, true
+func (o *Area) GetTransferNetworkOk() (ret AreaGetTransferNetworkRetType, ok bool) {
+	return getAreaGetTransferNetworkAttributeTypeOk(o.TransferNetwork)
 }
 
 // HasTransferNetwork returns a boolean if a field has been set.
 func (o *Area) HasTransferNetwork() bool {
-	if o != nil && !IsNil(o.TransferNetwork) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetTransferNetworkOk()
+	return ok
 }
 
 // SetTransferNetwork gets a reference to the given string and assigns it to the TransferNetwork field.
-func (o *Area) SetTransferNetwork(v *string) {
-	o.TransferNetwork = v
+func (o *Area) SetTransferNetwork(v AreaGetTransferNetworkRetType) {
+	setAreaGetTransferNetworkAttributeType(&o.TransferNetwork, v)
 }
 
 func (o Area) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DefaultNameservers) {
-		toSerialize["defaultNameservers"] = o.DefaultNameservers
+	if val, ok := getAreaGetDefaultNameserversAttributeTypeOk(o.DefaultNameservers); ok {
+		toSerialize["DefaultNameservers"] = val
 	}
-	if !IsNil(o.NetworkRanges) {
-		toSerialize["networkRanges"] = o.NetworkRanges
+	if val, ok := getAreaGetNetworkRangesAttributeTypeOk(o.NetworkRanges); ok {
+		toSerialize["NetworkRanges"] = val
 	}
-	if !IsNil(o.Routes) {
-		toSerialize["routes"] = o.Routes
+	if val, ok := getAreaGetRoutesAttributeTypeOk(o.Routes); ok {
+		toSerialize["Routes"] = val
 	}
-	if !IsNil(o.TransferNetwork) {
-		toSerialize["transferNetwork"] = o.TransferNetwork
+	if val, ok := getAreaGetTransferNetworkAttributeTypeOk(o.TransferNetwork); ok {
+		toSerialize["TransferNetwork"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_area_config.go b/services/iaas/model_area_config.go
index 5c39eca59..e080e34f0 100644
--- a/services/iaas/model_area_config.go
+++ b/services/iaas/model_area_config.go
@@ -17,17 +17,98 @@ import (
 // checks if the AreaConfig type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &AreaConfig{}
 
+/*
+	types and functions for defaultNameservers
+*/
+
+// isArray
+type AreaConfigGetDefaultNameserversAttributeType = *[]string
+type AreaConfigGetDefaultNameserversArgType = []string
+type AreaConfigGetDefaultNameserversRetType = []string
+
+func getAreaConfigGetDefaultNameserversAttributeTypeOk(arg AreaConfigGetDefaultNameserversAttributeType) (ret AreaConfigGetDefaultNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaConfigGetDefaultNameserversAttributeType(arg *AreaConfigGetDefaultNameserversAttributeType, val AreaConfigGetDefaultNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkRanges
+*/
+
+// isArray
+type AreaConfigGetNetworkRangesAttributeType = *[]NetworkRange
+type AreaConfigGetNetworkRangesArgType = []NetworkRange
+type AreaConfigGetNetworkRangesRetType = []NetworkRange
+
+func getAreaConfigGetNetworkRangesAttributeTypeOk(arg AreaConfigGetNetworkRangesAttributeType) (ret AreaConfigGetNetworkRangesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaConfigGetNetworkRangesAttributeType(arg *AreaConfigGetNetworkRangesAttributeType, val AreaConfigGetNetworkRangesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for routes
+*/
+
+// isArray
+type AreaConfigGetRoutesAttributeType = *[]Route
+type AreaConfigGetRoutesArgType = []Route
+type AreaConfigGetRoutesRetType = []Route
+
+func getAreaConfigGetRoutesAttributeTypeOk(arg AreaConfigGetRoutesAttributeType) (ret AreaConfigGetRoutesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaConfigGetRoutesAttributeType(arg *AreaConfigGetRoutesAttributeType, val AreaConfigGetRoutesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for transferNetwork
+*/
+
+// isNotNullableString
+type AreaConfigGetTransferNetworkAttributeType = *string
+
+func getAreaConfigGetTransferNetworkAttributeTypeOk(arg AreaConfigGetTransferNetworkAttributeType) (ret AreaConfigGetTransferNetworkRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaConfigGetTransferNetworkAttributeType(arg *AreaConfigGetTransferNetworkAttributeType, val AreaConfigGetTransferNetworkRetType) {
+	*arg = &val
+}
+
+type AreaConfigGetTransferNetworkArgType = string
+type AreaConfigGetTransferNetworkRetType = string
+
 // AreaConfig The basic network area object.
 type AreaConfig struct {
-	DefaultNameservers *[]string `json:"defaultNameservers,omitempty"`
+	DefaultNameservers AreaConfigGetDefaultNameserversAttributeType `json:"defaultNameservers,omitempty"`
 	// A list of network ranges.
 	// REQUIRED
-	NetworkRanges *[]NetworkRange `json:"networkRanges"`
+	NetworkRanges AreaConfigGetNetworkRangesAttributeType `json:"networkRanges"`
 	// A list of routes.
-	Routes *[]Route `json:"routes,omitempty"`
+	Routes AreaConfigGetRoutesAttributeType `json:"routes,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
 	// REQUIRED
-	TransferNetwork *string `json:"transferNetwork"`
+	TransferNetwork AreaConfigGetTransferNetworkAttributeType `json:"transferNetwork"`
 }
 
 type _AreaConfig AreaConfig
@@ -36,10 +117,10 @@ type _AreaConfig AreaConfig
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewAreaConfig(networkRanges *[]NetworkRange, transferNetwork *string) *AreaConfig {
+func NewAreaConfig(networkRanges AreaConfigGetNetworkRangesArgType, transferNetwork AreaConfigGetTransferNetworkArgType) *AreaConfig {
 	this := AreaConfig{}
-	this.NetworkRanges = networkRanges
-	this.TransferNetwork = transferNetwork
+	setAreaConfigGetNetworkRangesAttributeType(&this.NetworkRanges, networkRanges)
+	setAreaConfigGetTransferNetworkAttributeType(&this.TransferNetwork, transferNetwork)
 	return &this
 }
 
@@ -52,127 +133,99 @@ func NewAreaConfigWithDefaults() *AreaConfig {
 }
 
 // GetDefaultNameservers returns the DefaultNameservers field value if set, zero value otherwise.
-func (o *AreaConfig) GetDefaultNameservers() *[]string {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.DefaultNameservers
+func (o *AreaConfig) GetDefaultNameservers() (res AreaConfigGetDefaultNameserversRetType) {
+	res, _ = o.GetDefaultNameserversOk()
+	return
 }
 
 // GetDefaultNameserversOk returns a tuple with the DefaultNameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AreaConfig) GetDefaultNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		return nil, false
-	}
-	return o.DefaultNameservers, true
+func (o *AreaConfig) GetDefaultNameserversOk() (ret AreaConfigGetDefaultNameserversRetType, ok bool) {
+	return getAreaConfigGetDefaultNameserversAttributeTypeOk(o.DefaultNameservers)
 }
 
 // HasDefaultNameservers returns a boolean if a field has been set.
 func (o *AreaConfig) HasDefaultNameservers() bool {
-	if o != nil && !IsNil(o.DefaultNameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultNameserversOk()
+	return ok
 }
 
 // SetDefaultNameservers gets a reference to the given []string and assigns it to the DefaultNameservers field.
-func (o *AreaConfig) SetDefaultNameservers(v *[]string) {
-	o.DefaultNameservers = v
+func (o *AreaConfig) SetDefaultNameservers(v AreaConfigGetDefaultNameserversRetType) {
+	setAreaConfigGetDefaultNameserversAttributeType(&o.DefaultNameservers, v)
 }
 
 // GetNetworkRanges returns the NetworkRanges field value
-func (o *AreaConfig) GetNetworkRanges() *[]NetworkRange {
-	if o == nil || IsNil(o.NetworkRanges) {
-		var ret *[]NetworkRange
-		return ret
-	}
-
-	return o.NetworkRanges
+func (o *AreaConfig) GetNetworkRanges() (ret AreaConfigGetNetworkRangesRetType) {
+	ret, _ = o.GetNetworkRangesOk()
+	return ret
 }
 
 // GetNetworkRangesOk returns a tuple with the NetworkRanges field value
 // and a boolean to check if the value has been set.
-func (o *AreaConfig) GetNetworkRangesOk() (*[]NetworkRange, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.NetworkRanges, true
+func (o *AreaConfig) GetNetworkRangesOk() (ret AreaConfigGetNetworkRangesRetType, ok bool) {
+	return getAreaConfigGetNetworkRangesAttributeTypeOk(o.NetworkRanges)
 }
 
 // SetNetworkRanges sets field value
-func (o *AreaConfig) SetNetworkRanges(v *[]NetworkRange) {
-	o.NetworkRanges = v
+func (o *AreaConfig) SetNetworkRanges(v AreaConfigGetNetworkRangesRetType) {
+	setAreaConfigGetNetworkRangesAttributeType(&o.NetworkRanges, v)
 }
 
 // GetRoutes returns the Routes field value if set, zero value otherwise.
-func (o *AreaConfig) GetRoutes() *[]Route {
-	if o == nil || IsNil(o.Routes) {
-		var ret *[]Route
-		return ret
-	}
-	return o.Routes
+func (o *AreaConfig) GetRoutes() (res AreaConfigGetRoutesRetType) {
+	res, _ = o.GetRoutesOk()
+	return
 }
 
 // GetRoutesOk returns a tuple with the Routes field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AreaConfig) GetRoutesOk() (*[]Route, bool) {
-	if o == nil || IsNil(o.Routes) {
-		return nil, false
-	}
-	return o.Routes, true
+func (o *AreaConfig) GetRoutesOk() (ret AreaConfigGetRoutesRetType, ok bool) {
+	return getAreaConfigGetRoutesAttributeTypeOk(o.Routes)
 }
 
 // HasRoutes returns a boolean if a field has been set.
 func (o *AreaConfig) HasRoutes() bool {
-	if o != nil && !IsNil(o.Routes) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRoutesOk()
+	return ok
 }
 
 // SetRoutes gets a reference to the given []Route and assigns it to the Routes field.
-func (o *AreaConfig) SetRoutes(v *[]Route) {
-	o.Routes = v
+func (o *AreaConfig) SetRoutes(v AreaConfigGetRoutesRetType) {
+	setAreaConfigGetRoutesAttributeType(&o.Routes, v)
 }
 
 // GetTransferNetwork returns the TransferNetwork field value
-func (o *AreaConfig) GetTransferNetwork() *string {
-	if o == nil || IsNil(o.TransferNetwork) {
-		var ret *string
-		return ret
-	}
-
-	return o.TransferNetwork
+func (o *AreaConfig) GetTransferNetwork() (ret AreaConfigGetTransferNetworkRetType) {
+	ret, _ = o.GetTransferNetworkOk()
+	return ret
 }
 
 // GetTransferNetworkOk returns a tuple with the TransferNetwork field value
 // and a boolean to check if the value has been set.
-func (o *AreaConfig) GetTransferNetworkOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.TransferNetwork, true
+func (o *AreaConfig) GetTransferNetworkOk() (ret AreaConfigGetTransferNetworkRetType, ok bool) {
+	return getAreaConfigGetTransferNetworkAttributeTypeOk(o.TransferNetwork)
 }
 
 // SetTransferNetwork sets field value
-func (o *AreaConfig) SetTransferNetwork(v *string) {
-	o.TransferNetwork = v
+func (o *AreaConfig) SetTransferNetwork(v AreaConfigGetTransferNetworkRetType) {
+	setAreaConfigGetTransferNetworkAttributeType(&o.TransferNetwork, v)
 }
 
 func (o AreaConfig) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DefaultNameservers) {
-		toSerialize["defaultNameservers"] = o.DefaultNameservers
+	if val, ok := getAreaConfigGetDefaultNameserversAttributeTypeOk(o.DefaultNameservers); ok {
+		toSerialize["DefaultNameservers"] = val
+	}
+	if val, ok := getAreaConfigGetNetworkRangesAttributeTypeOk(o.NetworkRanges); ok {
+		toSerialize["NetworkRanges"] = val
+	}
+	if val, ok := getAreaConfigGetRoutesAttributeTypeOk(o.Routes); ok {
+		toSerialize["Routes"] = val
 	}
-	toSerialize["networkRanges"] = o.NetworkRanges
-	if !IsNil(o.Routes) {
-		toSerialize["routes"] = o.Routes
+	if val, ok := getAreaConfigGetTransferNetworkAttributeTypeOk(o.TransferNetwork); ok {
+		toSerialize["TransferNetwork"] = val
 	}
-	toSerialize["transferNetwork"] = o.TransferNetwork
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_area_prefix_config_ipv4.go b/services/iaas/model_area_prefix_config_ipv4.go
index d722168d7..38e9110f5 100644
--- a/services/iaas/model_area_prefix_config_ipv4.go
+++ b/services/iaas/model_area_prefix_config_ipv4.go
@@ -17,14 +17,74 @@ import (
 // checks if the AreaPrefixConfigIPv4 type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &AreaPrefixConfigIPv4{}
 
+/*
+	types and functions for defaultPrefixLen
+*/
+
+// isInteger
+type AreaPrefixConfigIPv4GetDefaultPrefixLenAttributeType = *int64
+type AreaPrefixConfigIPv4GetDefaultPrefixLenArgType = int64
+type AreaPrefixConfigIPv4GetDefaultPrefixLenRetType = int64
+
+func getAreaPrefixConfigIPv4GetDefaultPrefixLenAttributeTypeOk(arg AreaPrefixConfigIPv4GetDefaultPrefixLenAttributeType) (ret AreaPrefixConfigIPv4GetDefaultPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaPrefixConfigIPv4GetDefaultPrefixLenAttributeType(arg *AreaPrefixConfigIPv4GetDefaultPrefixLenAttributeType, val AreaPrefixConfigIPv4GetDefaultPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for maxPrefixLen
+*/
+
+// isInteger
+type AreaPrefixConfigIPv4GetMaxPrefixLenAttributeType = *int64
+type AreaPrefixConfigIPv4GetMaxPrefixLenArgType = int64
+type AreaPrefixConfigIPv4GetMaxPrefixLenRetType = int64
+
+func getAreaPrefixConfigIPv4GetMaxPrefixLenAttributeTypeOk(arg AreaPrefixConfigIPv4GetMaxPrefixLenAttributeType) (ret AreaPrefixConfigIPv4GetMaxPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaPrefixConfigIPv4GetMaxPrefixLenAttributeType(arg *AreaPrefixConfigIPv4GetMaxPrefixLenAttributeType, val AreaPrefixConfigIPv4GetMaxPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minPrefixLen
+*/
+
+// isInteger
+type AreaPrefixConfigIPv4GetMinPrefixLenAttributeType = *int64
+type AreaPrefixConfigIPv4GetMinPrefixLenArgType = int64
+type AreaPrefixConfigIPv4GetMinPrefixLenRetType = int64
+
+func getAreaPrefixConfigIPv4GetMinPrefixLenAttributeTypeOk(arg AreaPrefixConfigIPv4GetMinPrefixLenAttributeType) (ret AreaPrefixConfigIPv4GetMinPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAreaPrefixConfigIPv4GetMinPrefixLenAttributeType(arg *AreaPrefixConfigIPv4GetMinPrefixLenAttributeType, val AreaPrefixConfigIPv4GetMinPrefixLenRetType) {
+	*arg = &val
+}
+
 // AreaPrefixConfigIPv4 The IPv4 prefix config for a network area.
 type AreaPrefixConfigIPv4 struct {
 	// The default prefix length for networks in the network area.
-	DefaultPrefixLen *int64 `json:"defaultPrefixLen,omitempty"`
+	DefaultPrefixLen AreaPrefixConfigIPv4GetDefaultPrefixLenAttributeType `json:"defaultPrefixLen,omitempty"`
 	// The maximal prefix length for networks in the network area.
-	MaxPrefixLen *int64 `json:"maxPrefixLen,omitempty"`
+	MaxPrefixLen AreaPrefixConfigIPv4GetMaxPrefixLenAttributeType `json:"maxPrefixLen,omitempty"`
 	// The minimal prefix length for networks in the network area.
-	MinPrefixLen *int64 `json:"minPrefixLen,omitempty"`
+	MinPrefixLen AreaPrefixConfigIPv4GetMinPrefixLenAttributeType `json:"minPrefixLen,omitempty"`
 }
 
 // NewAreaPrefixConfigIPv4 instantiates a new AreaPrefixConfigIPv4 object
@@ -33,12 +93,6 @@ type AreaPrefixConfigIPv4 struct {
 // will change when the set of required properties is changed
 func NewAreaPrefixConfigIPv4() *AreaPrefixConfigIPv4 {
 	this := AreaPrefixConfigIPv4{}
-	var defaultPrefixLen int64 = 25
-	this.DefaultPrefixLen = &defaultPrefixLen
-	var maxPrefixLen int64 = 29
-	this.MaxPrefixLen = &maxPrefixLen
-	var minPrefixLen int64 = 24
-	this.MinPrefixLen = &minPrefixLen
 	return &this
 }
 
@@ -57,111 +111,84 @@ func NewAreaPrefixConfigIPv4WithDefaults() *AreaPrefixConfigIPv4 {
 }
 
 // GetDefaultPrefixLen returns the DefaultPrefixLen field value if set, zero value otherwise.
-func (o *AreaPrefixConfigIPv4) GetDefaultPrefixLen() *int64 {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.DefaultPrefixLen
+func (o *AreaPrefixConfigIPv4) GetDefaultPrefixLen() (res AreaPrefixConfigIPv4GetDefaultPrefixLenRetType) {
+	res, _ = o.GetDefaultPrefixLenOk()
+	return
 }
 
 // GetDefaultPrefixLenOk returns a tuple with the DefaultPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AreaPrefixConfigIPv4) GetDefaultPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		return nil, false
-	}
-	return o.DefaultPrefixLen, true
+func (o *AreaPrefixConfigIPv4) GetDefaultPrefixLenOk() (ret AreaPrefixConfigIPv4GetDefaultPrefixLenRetType, ok bool) {
+	return getAreaPrefixConfigIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen)
 }
 
 // HasDefaultPrefixLen returns a boolean if a field has been set.
 func (o *AreaPrefixConfigIPv4) HasDefaultPrefixLen() bool {
-	if o != nil && !IsNil(o.DefaultPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultPrefixLenOk()
+	return ok
 }
 
 // SetDefaultPrefixLen gets a reference to the given int64 and assigns it to the DefaultPrefixLen field.
-func (o *AreaPrefixConfigIPv4) SetDefaultPrefixLen(v *int64) {
-	o.DefaultPrefixLen = v
+func (o *AreaPrefixConfigIPv4) SetDefaultPrefixLen(v AreaPrefixConfigIPv4GetDefaultPrefixLenRetType) {
+	setAreaPrefixConfigIPv4GetDefaultPrefixLenAttributeType(&o.DefaultPrefixLen, v)
 }
 
 // GetMaxPrefixLen returns the MaxPrefixLen field value if set, zero value otherwise.
-func (o *AreaPrefixConfigIPv4) GetMaxPrefixLen() *int64 {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MaxPrefixLen
+func (o *AreaPrefixConfigIPv4) GetMaxPrefixLen() (res AreaPrefixConfigIPv4GetMaxPrefixLenRetType) {
+	res, _ = o.GetMaxPrefixLenOk()
+	return
 }
 
 // GetMaxPrefixLenOk returns a tuple with the MaxPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AreaPrefixConfigIPv4) GetMaxPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		return nil, false
-	}
-	return o.MaxPrefixLen, true
+func (o *AreaPrefixConfigIPv4) GetMaxPrefixLenOk() (ret AreaPrefixConfigIPv4GetMaxPrefixLenRetType, ok bool) {
+	return getAreaPrefixConfigIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen)
 }
 
 // HasMaxPrefixLen returns a boolean if a field has been set.
 func (o *AreaPrefixConfigIPv4) HasMaxPrefixLen() bool {
-	if o != nil && !IsNil(o.MaxPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMaxPrefixLenOk()
+	return ok
 }
 
 // SetMaxPrefixLen gets a reference to the given int64 and assigns it to the MaxPrefixLen field.
-func (o *AreaPrefixConfigIPv4) SetMaxPrefixLen(v *int64) {
-	o.MaxPrefixLen = v
+func (o *AreaPrefixConfigIPv4) SetMaxPrefixLen(v AreaPrefixConfigIPv4GetMaxPrefixLenRetType) {
+	setAreaPrefixConfigIPv4GetMaxPrefixLenAttributeType(&o.MaxPrefixLen, v)
 }
 
 // GetMinPrefixLen returns the MinPrefixLen field value if set, zero value otherwise.
-func (o *AreaPrefixConfigIPv4) GetMinPrefixLen() *int64 {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MinPrefixLen
+func (o *AreaPrefixConfigIPv4) GetMinPrefixLen() (res AreaPrefixConfigIPv4GetMinPrefixLenRetType) {
+	res, _ = o.GetMinPrefixLenOk()
+	return
 }
 
 // GetMinPrefixLenOk returns a tuple with the MinPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AreaPrefixConfigIPv4) GetMinPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		return nil, false
-	}
-	return o.MinPrefixLen, true
+func (o *AreaPrefixConfigIPv4) GetMinPrefixLenOk() (ret AreaPrefixConfigIPv4GetMinPrefixLenRetType, ok bool) {
+	return getAreaPrefixConfigIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen)
 }
 
 // HasMinPrefixLen returns a boolean if a field has been set.
 func (o *AreaPrefixConfigIPv4) HasMinPrefixLen() bool {
-	if o != nil && !IsNil(o.MinPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinPrefixLenOk()
+	return ok
 }
 
 // SetMinPrefixLen gets a reference to the given int64 and assigns it to the MinPrefixLen field.
-func (o *AreaPrefixConfigIPv4) SetMinPrefixLen(v *int64) {
-	o.MinPrefixLen = v
+func (o *AreaPrefixConfigIPv4) SetMinPrefixLen(v AreaPrefixConfigIPv4GetMinPrefixLenRetType) {
+	setAreaPrefixConfigIPv4GetMinPrefixLenAttributeType(&o.MinPrefixLen, v)
 }
 
 func (o AreaPrefixConfigIPv4) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DefaultPrefixLen) {
-		toSerialize["defaultPrefixLen"] = o.DefaultPrefixLen
+	if val, ok := getAreaPrefixConfigIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen); ok {
+		toSerialize["DefaultPrefixLen"] = val
 	}
-	if !IsNil(o.MaxPrefixLen) {
-		toSerialize["maxPrefixLen"] = o.MaxPrefixLen
+	if val, ok := getAreaPrefixConfigIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen); ok {
+		toSerialize["MaxPrefixLen"] = val
 	}
-	if !IsNil(o.MinPrefixLen) {
-		toSerialize["minPrefixLen"] = o.MinPrefixLen
+	if val, ok := getAreaPrefixConfigIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen); ok {
+		toSerialize["MinPrefixLen"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_availability_zone_list_response.go b/services/iaas/model_availability_zone_list_response.go
index 11c9bd377..61db846cd 100644
--- a/services/iaas/model_availability_zone_list_response.go
+++ b/services/iaas/model_availability_zone_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the AvailabilityZoneListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &AvailabilityZoneListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type AvailabilityZoneListResponseGetItemsAttributeType = *[]string
+type AvailabilityZoneListResponseGetItemsArgType = []string
+type AvailabilityZoneListResponseGetItemsRetType = []string
+
+func getAvailabilityZoneListResponseGetItemsAttributeTypeOk(arg AvailabilityZoneListResponseGetItemsAttributeType) (ret AvailabilityZoneListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setAvailabilityZoneListResponseGetItemsAttributeType(arg *AvailabilityZoneListResponseGetItemsAttributeType, val AvailabilityZoneListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // AvailabilityZoneListResponse Availability Zone list response.
 type AvailabilityZoneListResponse struct {
 	// A list of availability zones.
 	// REQUIRED
-	Items *[]string `json:"items"`
+	Items AvailabilityZoneListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _AvailabilityZoneListResponse AvailabilityZoneListResponse
@@ -30,9 +50,9 @@ type _AvailabilityZoneListResponse AvailabilityZoneListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewAvailabilityZoneListResponse(items *[]string) *AvailabilityZoneListResponse {
+func NewAvailabilityZoneListResponse(items AvailabilityZoneListResponseGetItemsArgType) *AvailabilityZoneListResponse {
 	this := AvailabilityZoneListResponse{}
-	this.Items = items
+	setAvailabilityZoneListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewAvailabilityZoneListResponseWithDefaults() *AvailabilityZoneListResponse
 }
 
 // GetItems returns the Items field value
-func (o *AvailabilityZoneListResponse) GetItems() *[]string {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]string
-		return ret
-	}
-
-	return o.Items
+func (o *AvailabilityZoneListResponse) GetItems() (ret AvailabilityZoneListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *AvailabilityZoneListResponse) GetItemsOk() (*[]string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *AvailabilityZoneListResponse) GetItemsOk() (ret AvailabilityZoneListResponseGetItemsRetType, ok bool) {
+	return getAvailabilityZoneListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *AvailabilityZoneListResponse) SetItems(v *[]string) {
-	o.Items = v
+func (o *AvailabilityZoneListResponse) SetItems(v AvailabilityZoneListResponseGetItemsRetType) {
+	setAvailabilityZoneListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o AvailabilityZoneListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getAvailabilityZoneListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_backup.go b/services/iaas/model_backup.go
index ef904a79d..419c228b0 100644
--- a/services/iaas/model_backup.go
+++ b/services/iaas/model_backup.go
@@ -18,28 +18,234 @@ import (
 // checks if the Backup type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Backup{}
 
+/*
+	types and functions for availabilityZone
+*/
+
+// isNotNullableString
+type BackupGetAvailabilityZoneAttributeType = *string
+
+func getBackupGetAvailabilityZoneAttributeTypeOk(arg BackupGetAvailabilityZoneAttributeType) (ret BackupGetAvailabilityZoneRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetAvailabilityZoneAttributeType(arg *BackupGetAvailabilityZoneAttributeType, val BackupGetAvailabilityZoneRetType) {
+	*arg = &val
+}
+
+type BackupGetAvailabilityZoneArgType = string
+type BackupGetAvailabilityZoneRetType = string
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type BackupGetCreatedAtAttributeType = *time.Time
+type BackupGetCreatedAtArgType = time.Time
+type BackupGetCreatedAtRetType = time.Time
+
+func getBackupGetCreatedAtAttributeTypeOk(arg BackupGetCreatedAtAttributeType) (ret BackupGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetCreatedAtAttributeType(arg *BackupGetCreatedAtAttributeType, val BackupGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type BackupGetIdAttributeType = *string
+
+func getBackupGetIdAttributeTypeOk(arg BackupGetIdAttributeType) (ret BackupGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetIdAttributeType(arg *BackupGetIdAttributeType, val BackupGetIdRetType) {
+	*arg = &val
+}
+
+type BackupGetIdArgType = string
+type BackupGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type BackupGetLabelsAttributeType = *map[string]interface{}
+type BackupGetLabelsArgType = map[string]interface{}
+type BackupGetLabelsRetType = map[string]interface{}
+
+func getBackupGetLabelsAttributeTypeOk(arg BackupGetLabelsAttributeType) (ret BackupGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetLabelsAttributeType(arg *BackupGetLabelsAttributeType, val BackupGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type BackupGetNameAttributeType = *string
+
+func getBackupGetNameAttributeTypeOk(arg BackupGetNameAttributeType) (ret BackupGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetNameAttributeType(arg *BackupGetNameAttributeType, val BackupGetNameRetType) {
+	*arg = &val
+}
+
+type BackupGetNameArgType = string
+type BackupGetNameRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type BackupGetSizeAttributeType = *int64
+type BackupGetSizeArgType = int64
+type BackupGetSizeRetType = int64
+
+func getBackupGetSizeAttributeTypeOk(arg BackupGetSizeAttributeType) (ret BackupGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetSizeAttributeType(arg *BackupGetSizeAttributeType, val BackupGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for snapshotId
+*/
+
+// isNotNullableString
+type BackupGetSnapshotIdAttributeType = *string
+
+func getBackupGetSnapshotIdAttributeTypeOk(arg BackupGetSnapshotIdAttributeType) (ret BackupGetSnapshotIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetSnapshotIdAttributeType(arg *BackupGetSnapshotIdAttributeType, val BackupGetSnapshotIdRetType) {
+	*arg = &val
+}
+
+type BackupGetSnapshotIdArgType = string
+type BackupGetSnapshotIdRetType = string
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type BackupGetStatusAttributeType = *string
+
+func getBackupGetStatusAttributeTypeOk(arg BackupGetStatusAttributeType) (ret BackupGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetStatusAttributeType(arg *BackupGetStatusAttributeType, val BackupGetStatusRetType) {
+	*arg = &val
+}
+
+type BackupGetStatusArgType = string
+type BackupGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type BackupGetUpdatedAtAttributeType = *time.Time
+type BackupGetUpdatedAtArgType = time.Time
+type BackupGetUpdatedAtRetType = time.Time
+
+func getBackupGetUpdatedAtAttributeTypeOk(arg BackupGetUpdatedAtAttributeType) (ret BackupGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetUpdatedAtAttributeType(arg *BackupGetUpdatedAtAttributeType, val BackupGetUpdatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for volumeId
+*/
+
+// isNotNullableString
+type BackupGetVolumeIdAttributeType = *string
+
+func getBackupGetVolumeIdAttributeTypeOk(arg BackupGetVolumeIdAttributeType) (ret BackupGetVolumeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupGetVolumeIdAttributeType(arg *BackupGetVolumeIdAttributeType, val BackupGetVolumeIdRetType) {
+	*arg = &val
+}
+
+type BackupGetVolumeIdArgType = string
+type BackupGetVolumeIdRetType = string
+
 // Backup Object that represents a backup.
 type Backup struct {
 	// Object that represents an availability zone.
-	AvailabilityZone *string `json:"availabilityZone,omitempty"`
+	AvailabilityZone BackupGetAvailabilityZoneAttributeType `json:"availabilityZone,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt BackupGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id BackupGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels BackupGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name BackupGetNameAttributeType `json:"name,omitempty"`
 	// Size in Gigabyte.
-	Size *int64 `json:"size,omitempty"`
+	Size BackupGetSizeAttributeType `json:"size,omitempty"`
 	// Universally Unique Identifier (UUID).
-	SnapshotId *string `json:"snapshotId,omitempty"`
+	SnapshotId BackupGetSnapshotIdAttributeType `json:"snapshotId,omitempty"`
 	// The status of a backup object. Possible values: `AVAILABLE`, `CREATING`, `DELETED`, `DELETING`, `ERROR`, `RESTORING`.
-	Status *string `json:"status,omitempty"`
+	Status BackupGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt BackupGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	VolumeId *string `json:"volumeId,omitempty"`
+	VolumeId BackupGetVolumeIdAttributeType `json:"volumeId,omitempty"`
 }
 
 // NewBackup instantiates a new Backup object
@@ -60,356 +266,266 @@ func NewBackupWithDefaults() *Backup {
 }
 
 // GetAvailabilityZone returns the AvailabilityZone field value if set, zero value otherwise.
-func (o *Backup) GetAvailabilityZone() *string {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		var ret *string
-		return ret
-	}
-	return o.AvailabilityZone
+func (o *Backup) GetAvailabilityZone() (res BackupGetAvailabilityZoneRetType) {
+	res, _ = o.GetAvailabilityZoneOk()
+	return
 }
 
 // GetAvailabilityZoneOk returns a tuple with the AvailabilityZone field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetAvailabilityZoneOk() (*string, bool) {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		return nil, false
-	}
-	return o.AvailabilityZone, true
+func (o *Backup) GetAvailabilityZoneOk() (ret BackupGetAvailabilityZoneRetType, ok bool) {
+	return getBackupGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone)
 }
 
 // HasAvailabilityZone returns a boolean if a field has been set.
 func (o *Backup) HasAvailabilityZone() bool {
-	if o != nil && !IsNil(o.AvailabilityZone) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAvailabilityZoneOk()
+	return ok
 }
 
 // SetAvailabilityZone gets a reference to the given string and assigns it to the AvailabilityZone field.
-func (o *Backup) SetAvailabilityZone(v *string) {
-	o.AvailabilityZone = v
+func (o *Backup) SetAvailabilityZone(v BackupGetAvailabilityZoneRetType) {
+	setBackupGetAvailabilityZoneAttributeType(&o.AvailabilityZone, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Backup) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Backup) GetCreatedAt() (res BackupGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Backup) GetCreatedAtOk() (ret BackupGetCreatedAtRetType, ok bool) {
+	return getBackupGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Backup) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Backup) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Backup) SetCreatedAt(v BackupGetCreatedAtRetType) {
+	setBackupGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *Backup) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *Backup) GetId() (res BackupGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *Backup) GetIdOk() (ret BackupGetIdRetType, ok bool) {
+	return getBackupGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *Backup) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *Backup) SetId(v *string) {
-	o.Id = v
+func (o *Backup) SetId(v BackupGetIdRetType) {
+	setBackupGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Backup) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Backup) GetLabels() (res BackupGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Backup) GetLabelsOk() (ret BackupGetLabelsRetType, ok bool) {
+	return getBackupGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Backup) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Backup) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Backup) SetLabels(v BackupGetLabelsRetType) {
+	setBackupGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *Backup) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *Backup) GetName() (res BackupGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Backup) GetNameOk() (ret BackupGetNameRetType, ok bool) {
+	return getBackupGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *Backup) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *Backup) SetName(v *string) {
-	o.Name = v
+func (o *Backup) SetName(v BackupGetNameRetType) {
+	setBackupGetNameAttributeType(&o.Name, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *Backup) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *Backup) GetSize() (res BackupGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *Backup) GetSizeOk() (ret BackupGetSizeRetType, ok bool) {
+	return getBackupGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *Backup) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *Backup) SetSize(v *int64) {
-	o.Size = v
+func (o *Backup) SetSize(v BackupGetSizeRetType) {
+	setBackupGetSizeAttributeType(&o.Size, v)
 }
 
 // GetSnapshotId returns the SnapshotId field value if set, zero value otherwise.
-func (o *Backup) GetSnapshotId() *string {
-	if o == nil || IsNil(o.SnapshotId) {
-		var ret *string
-		return ret
-	}
-	return o.SnapshotId
+func (o *Backup) GetSnapshotId() (res BackupGetSnapshotIdRetType) {
+	res, _ = o.GetSnapshotIdOk()
+	return
 }
 
 // GetSnapshotIdOk returns a tuple with the SnapshotId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetSnapshotIdOk() (*string, bool) {
-	if o == nil || IsNil(o.SnapshotId) {
-		return nil, false
-	}
-	return o.SnapshotId, true
+func (o *Backup) GetSnapshotIdOk() (ret BackupGetSnapshotIdRetType, ok bool) {
+	return getBackupGetSnapshotIdAttributeTypeOk(o.SnapshotId)
 }
 
 // HasSnapshotId returns a boolean if a field has been set.
 func (o *Backup) HasSnapshotId() bool {
-	if o != nil && !IsNil(o.SnapshotId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSnapshotIdOk()
+	return ok
 }
 
 // SetSnapshotId gets a reference to the given string and assigns it to the SnapshotId field.
-func (o *Backup) SetSnapshotId(v *string) {
-	o.SnapshotId = v
+func (o *Backup) SetSnapshotId(v BackupGetSnapshotIdRetType) {
+	setBackupGetSnapshotIdAttributeType(&o.SnapshotId, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *Backup) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *Backup) GetStatus() (res BackupGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *Backup) GetStatusOk() (ret BackupGetStatusRetType, ok bool) {
+	return getBackupGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *Backup) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *Backup) SetStatus(v *string) {
-	o.Status = v
+func (o *Backup) SetStatus(v BackupGetStatusRetType) {
+	setBackupGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Backup) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Backup) GetUpdatedAt() (res BackupGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Backup) GetUpdatedAtOk() (ret BackupGetUpdatedAtRetType, ok bool) {
+	return getBackupGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Backup) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Backup) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Backup) SetUpdatedAt(v BackupGetUpdatedAtRetType) {
+	setBackupGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 // GetVolumeId returns the VolumeId field value if set, zero value otherwise.
-func (o *Backup) GetVolumeId() *string {
-	if o == nil || IsNil(o.VolumeId) {
-		var ret *string
-		return ret
-	}
-	return o.VolumeId
+func (o *Backup) GetVolumeId() (res BackupGetVolumeIdRetType) {
+	res, _ = o.GetVolumeIdOk()
+	return
 }
 
 // GetVolumeIdOk returns a tuple with the VolumeId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Backup) GetVolumeIdOk() (*string, bool) {
-	if o == nil || IsNil(o.VolumeId) {
-		return nil, false
-	}
-	return o.VolumeId, true
+func (o *Backup) GetVolumeIdOk() (ret BackupGetVolumeIdRetType, ok bool) {
+	return getBackupGetVolumeIdAttributeTypeOk(o.VolumeId)
 }
 
 // HasVolumeId returns a boolean if a field has been set.
 func (o *Backup) HasVolumeId() bool {
-	if o != nil && !IsNil(o.VolumeId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVolumeIdOk()
+	return ok
 }
 
 // SetVolumeId gets a reference to the given string and assigns it to the VolumeId field.
-func (o *Backup) SetVolumeId(v *string) {
-	o.VolumeId = v
+func (o *Backup) SetVolumeId(v BackupGetVolumeIdRetType) {
+	setBackupGetVolumeIdAttributeType(&o.VolumeId, v)
 }
 
 func (o Backup) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AvailabilityZone) {
-		toSerialize["availabilityZone"] = o.AvailabilityZone
+	if val, ok := getBackupGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone); ok {
+		toSerialize["AvailabilityZone"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getBackupGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getBackupGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getBackupGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getBackupGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getBackupGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.SnapshotId) {
-		toSerialize["snapshotId"] = o.SnapshotId
+	if val, ok := getBackupGetSnapshotIdAttributeTypeOk(o.SnapshotId); ok {
+		toSerialize["SnapshotId"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getBackupGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getBackupGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
-	if !IsNil(o.VolumeId) {
-		toSerialize["volumeId"] = o.VolumeId
+	if val, ok := getBackupGetVolumeIdAttributeTypeOk(o.VolumeId); ok {
+		toSerialize["VolumeId"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_backup_list_response.go b/services/iaas/model_backup_list_response.go
index eac2a32aa..1ae74018b 100644
--- a/services/iaas/model_backup_list_response.go
+++ b/services/iaas/model_backup_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the BackupListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &BackupListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type BackupListResponseGetItemsAttributeType = *[]Backup
+type BackupListResponseGetItemsArgType = []Backup
+type BackupListResponseGetItemsRetType = []Backup
+
+func getBackupListResponseGetItemsAttributeTypeOk(arg BackupListResponseGetItemsAttributeType) (ret BackupListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupListResponseGetItemsAttributeType(arg *BackupListResponseGetItemsAttributeType, val BackupListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // BackupListResponse Backup list response.
 type BackupListResponse struct {
 	// A list containing backup objects.
 	// REQUIRED
-	Items *[]Backup `json:"items"`
+	Items BackupListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _BackupListResponse BackupListResponse
@@ -30,9 +50,9 @@ type _BackupListResponse BackupListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewBackupListResponse(items *[]Backup) *BackupListResponse {
+func NewBackupListResponse(items BackupListResponseGetItemsArgType) *BackupListResponse {
 	this := BackupListResponse{}
-	this.Items = items
+	setBackupListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewBackupListResponseWithDefaults() *BackupListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *BackupListResponse) GetItems() *[]Backup {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Backup
-		return ret
-	}
-
-	return o.Items
+func (o *BackupListResponse) GetItems() (ret BackupListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *BackupListResponse) GetItemsOk() (*[]Backup, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *BackupListResponse) GetItemsOk() (ret BackupListResponseGetItemsRetType, ok bool) {
+	return getBackupListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *BackupListResponse) SetItems(v *[]Backup) {
-	o.Items = v
+func (o *BackupListResponse) SetItems(v BackupListResponseGetItemsRetType) {
+	setBackupListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o BackupListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getBackupListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_backup_source.go b/services/iaas/model_backup_source.go
index d6b729009..70f9b30f8 100644
--- a/services/iaas/model_backup_source.go
+++ b/services/iaas/model_backup_source.go
@@ -17,14 +17,56 @@ import (
 // checks if the BackupSource type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &BackupSource{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type BackupSourceGetIdAttributeType = *string
+
+func getBackupSourceGetIdAttributeTypeOk(arg BackupSourceGetIdAttributeType) (ret BackupSourceGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupSourceGetIdAttributeType(arg *BackupSourceGetIdAttributeType, val BackupSourceGetIdRetType) {
+	*arg = &val
+}
+
+type BackupSourceGetIdArgType = string
+type BackupSourceGetIdRetType = string
+
+/*
+	types and functions for type
+*/
+
+// isNotNullableString
+type BackupSourceGetTypeAttributeType = *string
+
+func getBackupSourceGetTypeAttributeTypeOk(arg BackupSourceGetTypeAttributeType) (ret BackupSourceGetTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBackupSourceGetTypeAttributeType(arg *BackupSourceGetTypeAttributeType, val BackupSourceGetTypeRetType) {
+	*arg = &val
+}
+
+type BackupSourceGetTypeArgType = string
+type BackupSourceGetTypeRetType = string
+
 // BackupSource The source object of a backup.
 type BackupSource struct {
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	Id *string `json:"id"`
+	Id BackupSourceGetIdAttributeType `json:"id"`
 	// The source types of a backup. Possible values: `volume`, `snapshot`.
 	// REQUIRED
-	Type *string `json:"type"`
+	Type BackupSourceGetTypeAttributeType `json:"type"`
 }
 
 type _BackupSource BackupSource
@@ -33,10 +75,10 @@ type _BackupSource BackupSource
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewBackupSource(id *string, type_ *string) *BackupSource {
+func NewBackupSource(id BackupSourceGetIdArgType, type_ BackupSourceGetTypeArgType) *BackupSource {
 	this := BackupSource{}
-	this.Id = id
-	this.Type = type_
+	setBackupSourceGetIdAttributeType(&this.Id, id)
+	setBackupSourceGetTypeAttributeType(&this.Type, type_)
 	return &this
 }
 
@@ -49,57 +91,47 @@ func NewBackupSourceWithDefaults() *BackupSource {
 }
 
 // GetId returns the Id field value
-func (o *BackupSource) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-
-	return o.Id
+func (o *BackupSource) GetId() (ret BackupSourceGetIdRetType) {
+	ret, _ = o.GetIdOk()
+	return ret
 }
 
 // GetIdOk returns a tuple with the Id field value
 // and a boolean to check if the value has been set.
-func (o *BackupSource) GetIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Id, true
+func (o *BackupSource) GetIdOk() (ret BackupSourceGetIdRetType, ok bool) {
+	return getBackupSourceGetIdAttributeTypeOk(o.Id)
 }
 
 // SetId sets field value
-func (o *BackupSource) SetId(v *string) {
-	o.Id = v
+func (o *BackupSource) SetId(v BackupSourceGetIdRetType) {
+	setBackupSourceGetIdAttributeType(&o.Id, v)
 }
 
 // GetType returns the Type field value
-func (o *BackupSource) GetType() *string {
-	if o == nil || IsNil(o.Type) {
-		var ret *string
-		return ret
-	}
-
-	return o.Type
+func (o *BackupSource) GetType() (ret BackupSourceGetTypeRetType) {
+	ret, _ = o.GetTypeOk()
+	return ret
 }
 
 // GetTypeOk returns a tuple with the Type field value
 // and a boolean to check if the value has been set.
-func (o *BackupSource) GetTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Type, true
+func (o *BackupSource) GetTypeOk() (ret BackupSourceGetTypeRetType, ok bool) {
+	return getBackupSourceGetTypeAttributeTypeOk(o.Type)
 }
 
 // SetType sets field value
-func (o *BackupSource) SetType(v *string) {
-	o.Type = v
+func (o *BackupSource) SetType(v BackupSourceGetTypeRetType) {
+	setBackupSourceGetTypeAttributeType(&o.Type, v)
 }
 
 func (o BackupSource) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["id"] = o.Id
-	toSerialize["type"] = o.Type
+	if val, ok := getBackupSourceGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
+	}
+	if val, ok := getBackupSourceGetTypeAttributeTypeOk(o.Type); ok {
+		toSerialize["Type"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_base_security_group_rule.go b/services/iaas/model_base_security_group_rule.go
index bce790e94..378a32877 100644
--- a/services/iaas/model_base_security_group_rule.go
+++ b/services/iaas/model_base_security_group_rule.go
@@ -17,25 +17,212 @@ import (
 // checks if the BaseSecurityGroupRule type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &BaseSecurityGroupRule{}
 
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type BaseSecurityGroupRuleGetDescriptionAttributeType = *string
+
+func getBaseSecurityGroupRuleGetDescriptionAttributeTypeOk(arg BaseSecurityGroupRuleGetDescriptionAttributeType) (ret BaseSecurityGroupRuleGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetDescriptionAttributeType(arg *BaseSecurityGroupRuleGetDescriptionAttributeType, val BaseSecurityGroupRuleGetDescriptionRetType) {
+	*arg = &val
+}
+
+type BaseSecurityGroupRuleGetDescriptionArgType = string
+type BaseSecurityGroupRuleGetDescriptionRetType = string
+
+/*
+	types and functions for direction
+*/
+
+// isNotNullableString
+type BaseSecurityGroupRuleGetDirectionAttributeType = *string
+
+func getBaseSecurityGroupRuleGetDirectionAttributeTypeOk(arg BaseSecurityGroupRuleGetDirectionAttributeType) (ret BaseSecurityGroupRuleGetDirectionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetDirectionAttributeType(arg *BaseSecurityGroupRuleGetDirectionAttributeType, val BaseSecurityGroupRuleGetDirectionRetType) {
+	*arg = &val
+}
+
+type BaseSecurityGroupRuleGetDirectionArgType = string
+type BaseSecurityGroupRuleGetDirectionRetType = string
+
+/*
+	types and functions for ethertype
+*/
+
+// isNotNullableString
+type BaseSecurityGroupRuleGetEthertypeAttributeType = *string
+
+func getBaseSecurityGroupRuleGetEthertypeAttributeTypeOk(arg BaseSecurityGroupRuleGetEthertypeAttributeType) (ret BaseSecurityGroupRuleGetEthertypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetEthertypeAttributeType(arg *BaseSecurityGroupRuleGetEthertypeAttributeType, val BaseSecurityGroupRuleGetEthertypeRetType) {
+	*arg = &val
+}
+
+type BaseSecurityGroupRuleGetEthertypeArgType = string
+type BaseSecurityGroupRuleGetEthertypeRetType = string
+
+/*
+	types and functions for icmpParameters
+*/
+
+// isModel
+type BaseSecurityGroupRuleGetIcmpParametersAttributeType = *ICMPParameters
+type BaseSecurityGroupRuleGetIcmpParametersArgType = ICMPParameters
+type BaseSecurityGroupRuleGetIcmpParametersRetType = ICMPParameters
+
+func getBaseSecurityGroupRuleGetIcmpParametersAttributeTypeOk(arg BaseSecurityGroupRuleGetIcmpParametersAttributeType) (ret BaseSecurityGroupRuleGetIcmpParametersRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetIcmpParametersAttributeType(arg *BaseSecurityGroupRuleGetIcmpParametersAttributeType, val BaseSecurityGroupRuleGetIcmpParametersRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type BaseSecurityGroupRuleGetIdAttributeType = *string
+
+func getBaseSecurityGroupRuleGetIdAttributeTypeOk(arg BaseSecurityGroupRuleGetIdAttributeType) (ret BaseSecurityGroupRuleGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetIdAttributeType(arg *BaseSecurityGroupRuleGetIdAttributeType, val BaseSecurityGroupRuleGetIdRetType) {
+	*arg = &val
+}
+
+type BaseSecurityGroupRuleGetIdArgType = string
+type BaseSecurityGroupRuleGetIdRetType = string
+
+/*
+	types and functions for ipRange
+*/
+
+// isNotNullableString
+type BaseSecurityGroupRuleGetIpRangeAttributeType = *string
+
+func getBaseSecurityGroupRuleGetIpRangeAttributeTypeOk(arg BaseSecurityGroupRuleGetIpRangeAttributeType) (ret BaseSecurityGroupRuleGetIpRangeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetIpRangeAttributeType(arg *BaseSecurityGroupRuleGetIpRangeAttributeType, val BaseSecurityGroupRuleGetIpRangeRetType) {
+	*arg = &val
+}
+
+type BaseSecurityGroupRuleGetIpRangeArgType = string
+type BaseSecurityGroupRuleGetIpRangeRetType = string
+
+/*
+	types and functions for portRange
+*/
+
+// isModel
+type BaseSecurityGroupRuleGetPortRangeAttributeType = *PortRange
+type BaseSecurityGroupRuleGetPortRangeArgType = PortRange
+type BaseSecurityGroupRuleGetPortRangeRetType = PortRange
+
+func getBaseSecurityGroupRuleGetPortRangeAttributeTypeOk(arg BaseSecurityGroupRuleGetPortRangeAttributeType) (ret BaseSecurityGroupRuleGetPortRangeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetPortRangeAttributeType(arg *BaseSecurityGroupRuleGetPortRangeAttributeType, val BaseSecurityGroupRuleGetPortRangeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for remoteSecurityGroupId
+*/
+
+// isNotNullableString
+type BaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType = *string
+
+func getBaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeTypeOk(arg BaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType) (ret BaseSecurityGroupRuleGetRemoteSecurityGroupIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType(arg *BaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType, val BaseSecurityGroupRuleGetRemoteSecurityGroupIdRetType) {
+	*arg = &val
+}
+
+type BaseSecurityGroupRuleGetRemoteSecurityGroupIdArgType = string
+type BaseSecurityGroupRuleGetRemoteSecurityGroupIdRetType = string
+
+/*
+	types and functions for securityGroupId
+*/
+
+// isNotNullableString
+type BaseSecurityGroupRuleGetSecurityGroupIdAttributeType = *string
+
+func getBaseSecurityGroupRuleGetSecurityGroupIdAttributeTypeOk(arg BaseSecurityGroupRuleGetSecurityGroupIdAttributeType) (ret BaseSecurityGroupRuleGetSecurityGroupIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBaseSecurityGroupRuleGetSecurityGroupIdAttributeType(arg *BaseSecurityGroupRuleGetSecurityGroupIdAttributeType, val BaseSecurityGroupRuleGetSecurityGroupIdRetType) {
+	*arg = &val
+}
+
+type BaseSecurityGroupRuleGetSecurityGroupIdArgType = string
+type BaseSecurityGroupRuleGetSecurityGroupIdRetType = string
+
 // BaseSecurityGroupRule The base schema for a security group rule.
 type BaseSecurityGroupRule struct {
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description BaseSecurityGroupRuleGetDescriptionAttributeType `json:"description,omitempty"`
 	// The direction of the traffic which the rule should match.
 	// REQUIRED
-	Direction *string `json:"direction"`
+	Direction BaseSecurityGroupRuleGetDirectionAttributeType `json:"direction"`
 	// The ethertype which the rule should match.
-	Ethertype      *string         `json:"ethertype,omitempty"`
-	IcmpParameters *ICMPParameters `json:"icmpParameters,omitempty"`
+	Ethertype      BaseSecurityGroupRuleGetEthertypeAttributeType      `json:"ethertype,omitempty"`
+	IcmpParameters BaseSecurityGroupRuleGetIcmpParametersAttributeType `json:"icmpParameters,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id BaseSecurityGroupRuleGetIdAttributeType `json:"id,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
-	IpRange   *string    `json:"ipRange,omitempty"`
-	PortRange *PortRange `json:"portRange,omitempty"`
+	IpRange   BaseSecurityGroupRuleGetIpRangeAttributeType   `json:"ipRange,omitempty"`
+	PortRange BaseSecurityGroupRuleGetPortRangeAttributeType `json:"portRange,omitempty"`
 	// Universally Unique Identifier (UUID).
-	RemoteSecurityGroupId *string `json:"remoteSecurityGroupId,omitempty"`
+	RemoteSecurityGroupId BaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType `json:"remoteSecurityGroupId,omitempty"`
 	// Universally Unique Identifier (UUID).
-	SecurityGroupId *string `json:"securityGroupId,omitempty"`
+	SecurityGroupId BaseSecurityGroupRuleGetSecurityGroupIdAttributeType `json:"securityGroupId,omitempty"`
 }
 
 type _BaseSecurityGroupRule BaseSecurityGroupRule
@@ -44,11 +231,9 @@ type _BaseSecurityGroupRule BaseSecurityGroupRule
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewBaseSecurityGroupRule(direction *string) *BaseSecurityGroupRule {
+func NewBaseSecurityGroupRule(direction BaseSecurityGroupRuleGetDirectionArgType) *BaseSecurityGroupRule {
 	this := BaseSecurityGroupRule{}
-	this.Direction = direction
-	var ethertype string = "IPv4"
-	this.Ethertype = &ethertype
+	setBaseSecurityGroupRuleGetDirectionAttributeType(&this.Direction, direction)
 	return &this
 }
 
@@ -63,311 +248,234 @@ func NewBaseSecurityGroupRuleWithDefaults() *BaseSecurityGroupRule {
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *BaseSecurityGroupRule) GetDescription() (res BaseSecurityGroupRuleGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *BaseSecurityGroupRule) GetDescriptionOk() (ret BaseSecurityGroupRuleGetDescriptionRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *BaseSecurityGroupRule) SetDescription(v *string) {
-	o.Description = v
+func (o *BaseSecurityGroupRule) SetDescription(v BaseSecurityGroupRuleGetDescriptionRetType) {
+	setBaseSecurityGroupRuleGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetDirection returns the Direction field value
-func (o *BaseSecurityGroupRule) GetDirection() *string {
-	if o == nil || IsNil(o.Direction) {
-		var ret *string
-		return ret
-	}
-
-	return o.Direction
+func (o *BaseSecurityGroupRule) GetDirection() (ret BaseSecurityGroupRuleGetDirectionRetType) {
+	ret, _ = o.GetDirectionOk()
+	return ret
 }
 
 // GetDirectionOk returns a tuple with the Direction field value
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetDirectionOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Direction, true
+func (o *BaseSecurityGroupRule) GetDirectionOk() (ret BaseSecurityGroupRuleGetDirectionRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetDirectionAttributeTypeOk(o.Direction)
 }
 
 // SetDirection sets field value
-func (o *BaseSecurityGroupRule) SetDirection(v *string) {
-	o.Direction = v
+func (o *BaseSecurityGroupRule) SetDirection(v BaseSecurityGroupRuleGetDirectionRetType) {
+	setBaseSecurityGroupRuleGetDirectionAttributeType(&o.Direction, v)
 }
 
 // GetEthertype returns the Ethertype field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetEthertype() *string {
-	if o == nil || IsNil(o.Ethertype) {
-		var ret *string
-		return ret
-	}
-	return o.Ethertype
+func (o *BaseSecurityGroupRule) GetEthertype() (res BaseSecurityGroupRuleGetEthertypeRetType) {
+	res, _ = o.GetEthertypeOk()
+	return
 }
 
 // GetEthertypeOk returns a tuple with the Ethertype field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetEthertypeOk() (*string, bool) {
-	if o == nil || IsNil(o.Ethertype) {
-		return nil, false
-	}
-	return o.Ethertype, true
+func (o *BaseSecurityGroupRule) GetEthertypeOk() (ret BaseSecurityGroupRuleGetEthertypeRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetEthertypeAttributeTypeOk(o.Ethertype)
 }
 
 // HasEthertype returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasEthertype() bool {
-	if o != nil && !IsNil(o.Ethertype) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetEthertypeOk()
+	return ok
 }
 
 // SetEthertype gets a reference to the given string and assigns it to the Ethertype field.
-func (o *BaseSecurityGroupRule) SetEthertype(v *string) {
-	o.Ethertype = v
+func (o *BaseSecurityGroupRule) SetEthertype(v BaseSecurityGroupRuleGetEthertypeRetType) {
+	setBaseSecurityGroupRuleGetEthertypeAttributeType(&o.Ethertype, v)
 }
 
 // GetIcmpParameters returns the IcmpParameters field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetIcmpParameters() *ICMPParameters {
-	if o == nil || IsNil(o.IcmpParameters) {
-		var ret *ICMPParameters
-		return ret
-	}
-	return o.IcmpParameters
+func (o *BaseSecurityGroupRule) GetIcmpParameters() (res BaseSecurityGroupRuleGetIcmpParametersRetType) {
+	res, _ = o.GetIcmpParametersOk()
+	return
 }
 
 // GetIcmpParametersOk returns a tuple with the IcmpParameters field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetIcmpParametersOk() (*ICMPParameters, bool) {
-	if o == nil || IsNil(o.IcmpParameters) {
-		return nil, false
-	}
-	return o.IcmpParameters, true
+func (o *BaseSecurityGroupRule) GetIcmpParametersOk() (ret BaseSecurityGroupRuleGetIcmpParametersRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetIcmpParametersAttributeTypeOk(o.IcmpParameters)
 }
 
 // HasIcmpParameters returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasIcmpParameters() bool {
-	if o != nil && !IsNil(o.IcmpParameters) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIcmpParametersOk()
+	return ok
 }
 
 // SetIcmpParameters gets a reference to the given ICMPParameters and assigns it to the IcmpParameters field.
-func (o *BaseSecurityGroupRule) SetIcmpParameters(v *ICMPParameters) {
-	o.IcmpParameters = v
+func (o *BaseSecurityGroupRule) SetIcmpParameters(v BaseSecurityGroupRuleGetIcmpParametersRetType) {
+	setBaseSecurityGroupRuleGetIcmpParametersAttributeType(&o.IcmpParameters, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *BaseSecurityGroupRule) GetId() (res BaseSecurityGroupRuleGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *BaseSecurityGroupRule) GetIdOk() (ret BaseSecurityGroupRuleGetIdRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *BaseSecurityGroupRule) SetId(v *string) {
-	o.Id = v
+func (o *BaseSecurityGroupRule) SetId(v BaseSecurityGroupRuleGetIdRetType) {
+	setBaseSecurityGroupRuleGetIdAttributeType(&o.Id, v)
 }
 
 // GetIpRange returns the IpRange field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetIpRange() *string {
-	if o == nil || IsNil(o.IpRange) {
-		var ret *string
-		return ret
-	}
-	return o.IpRange
+func (o *BaseSecurityGroupRule) GetIpRange() (res BaseSecurityGroupRuleGetIpRangeRetType) {
+	res, _ = o.GetIpRangeOk()
+	return
 }
 
 // GetIpRangeOk returns a tuple with the IpRange field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetIpRangeOk() (*string, bool) {
-	if o == nil || IsNil(o.IpRange) {
-		return nil, false
-	}
-	return o.IpRange, true
+func (o *BaseSecurityGroupRule) GetIpRangeOk() (ret BaseSecurityGroupRuleGetIpRangeRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetIpRangeAttributeTypeOk(o.IpRange)
 }
 
 // HasIpRange returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasIpRange() bool {
-	if o != nil && !IsNil(o.IpRange) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpRangeOk()
+	return ok
 }
 
 // SetIpRange gets a reference to the given string and assigns it to the IpRange field.
-func (o *BaseSecurityGroupRule) SetIpRange(v *string) {
-	o.IpRange = v
+func (o *BaseSecurityGroupRule) SetIpRange(v BaseSecurityGroupRuleGetIpRangeRetType) {
+	setBaseSecurityGroupRuleGetIpRangeAttributeType(&o.IpRange, v)
 }
 
 // GetPortRange returns the PortRange field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetPortRange() *PortRange {
-	if o == nil || IsNil(o.PortRange) {
-		var ret *PortRange
-		return ret
-	}
-	return o.PortRange
+func (o *BaseSecurityGroupRule) GetPortRange() (res BaseSecurityGroupRuleGetPortRangeRetType) {
+	res, _ = o.GetPortRangeOk()
+	return
 }
 
 // GetPortRangeOk returns a tuple with the PortRange field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetPortRangeOk() (*PortRange, bool) {
-	if o == nil || IsNil(o.PortRange) {
-		return nil, false
-	}
-	return o.PortRange, true
+func (o *BaseSecurityGroupRule) GetPortRangeOk() (ret BaseSecurityGroupRuleGetPortRangeRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetPortRangeAttributeTypeOk(o.PortRange)
 }
 
 // HasPortRange returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasPortRange() bool {
-	if o != nil && !IsNil(o.PortRange) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPortRangeOk()
+	return ok
 }
 
 // SetPortRange gets a reference to the given PortRange and assigns it to the PortRange field.
-func (o *BaseSecurityGroupRule) SetPortRange(v *PortRange) {
-	o.PortRange = v
+func (o *BaseSecurityGroupRule) SetPortRange(v BaseSecurityGroupRuleGetPortRangeRetType) {
+	setBaseSecurityGroupRuleGetPortRangeAttributeType(&o.PortRange, v)
 }
 
 // GetRemoteSecurityGroupId returns the RemoteSecurityGroupId field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetRemoteSecurityGroupId() *string {
-	if o == nil || IsNil(o.RemoteSecurityGroupId) {
-		var ret *string
-		return ret
-	}
-	return o.RemoteSecurityGroupId
+func (o *BaseSecurityGroupRule) GetRemoteSecurityGroupId() (res BaseSecurityGroupRuleGetRemoteSecurityGroupIdRetType) {
+	res, _ = o.GetRemoteSecurityGroupIdOk()
+	return
 }
 
 // GetRemoteSecurityGroupIdOk returns a tuple with the RemoteSecurityGroupId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetRemoteSecurityGroupIdOk() (*string, bool) {
-	if o == nil || IsNil(o.RemoteSecurityGroupId) {
-		return nil, false
-	}
-	return o.RemoteSecurityGroupId, true
+func (o *BaseSecurityGroupRule) GetRemoteSecurityGroupIdOk() (ret BaseSecurityGroupRuleGetRemoteSecurityGroupIdRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeTypeOk(o.RemoteSecurityGroupId)
 }
 
 // HasRemoteSecurityGroupId returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasRemoteSecurityGroupId() bool {
-	if o != nil && !IsNil(o.RemoteSecurityGroupId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRemoteSecurityGroupIdOk()
+	return ok
 }
 
 // SetRemoteSecurityGroupId gets a reference to the given string and assigns it to the RemoteSecurityGroupId field.
-func (o *BaseSecurityGroupRule) SetRemoteSecurityGroupId(v *string) {
-	o.RemoteSecurityGroupId = v
+func (o *BaseSecurityGroupRule) SetRemoteSecurityGroupId(v BaseSecurityGroupRuleGetRemoteSecurityGroupIdRetType) {
+	setBaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType(&o.RemoteSecurityGroupId, v)
 }
 
 // GetSecurityGroupId returns the SecurityGroupId field value if set, zero value otherwise.
-func (o *BaseSecurityGroupRule) GetSecurityGroupId() *string {
-	if o == nil || IsNil(o.SecurityGroupId) {
-		var ret *string
-		return ret
-	}
-	return o.SecurityGroupId
+func (o *BaseSecurityGroupRule) GetSecurityGroupId() (res BaseSecurityGroupRuleGetSecurityGroupIdRetType) {
+	res, _ = o.GetSecurityGroupIdOk()
+	return
 }
 
 // GetSecurityGroupIdOk returns a tuple with the SecurityGroupId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BaseSecurityGroupRule) GetSecurityGroupIdOk() (*string, bool) {
-	if o == nil || IsNil(o.SecurityGroupId) {
-		return nil, false
-	}
-	return o.SecurityGroupId, true
+func (o *BaseSecurityGroupRule) GetSecurityGroupIdOk() (ret BaseSecurityGroupRuleGetSecurityGroupIdRetType, ok bool) {
+	return getBaseSecurityGroupRuleGetSecurityGroupIdAttributeTypeOk(o.SecurityGroupId)
 }
 
 // HasSecurityGroupId returns a boolean if a field has been set.
 func (o *BaseSecurityGroupRule) HasSecurityGroupId() bool {
-	if o != nil && !IsNil(o.SecurityGroupId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupIdOk()
+	return ok
 }
 
 // SetSecurityGroupId gets a reference to the given string and assigns it to the SecurityGroupId field.
-func (o *BaseSecurityGroupRule) SetSecurityGroupId(v *string) {
-	o.SecurityGroupId = v
+func (o *BaseSecurityGroupRule) SetSecurityGroupId(v BaseSecurityGroupRuleGetSecurityGroupIdRetType) {
+	setBaseSecurityGroupRuleGetSecurityGroupIdAttributeType(&o.SecurityGroupId, v)
 }
 
 func (o BaseSecurityGroupRule) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getBaseSecurityGroupRuleGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
+	}
+	if val, ok := getBaseSecurityGroupRuleGetDirectionAttributeTypeOk(o.Direction); ok {
+		toSerialize["Direction"] = val
 	}
-	toSerialize["direction"] = o.Direction
-	if !IsNil(o.Ethertype) {
-		toSerialize["ethertype"] = o.Ethertype
+	if val, ok := getBaseSecurityGroupRuleGetEthertypeAttributeTypeOk(o.Ethertype); ok {
+		toSerialize["Ethertype"] = val
 	}
-	if !IsNil(o.IcmpParameters) {
-		toSerialize["icmpParameters"] = o.IcmpParameters
+	if val, ok := getBaseSecurityGroupRuleGetIcmpParametersAttributeTypeOk(o.IcmpParameters); ok {
+		toSerialize["IcmpParameters"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getBaseSecurityGroupRuleGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.IpRange) {
-		toSerialize["ipRange"] = o.IpRange
+	if val, ok := getBaseSecurityGroupRuleGetIpRangeAttributeTypeOk(o.IpRange); ok {
+		toSerialize["IpRange"] = val
 	}
-	if !IsNil(o.PortRange) {
-		toSerialize["portRange"] = o.PortRange
+	if val, ok := getBaseSecurityGroupRuleGetPortRangeAttributeTypeOk(o.PortRange); ok {
+		toSerialize["PortRange"] = val
 	}
-	if !IsNil(o.RemoteSecurityGroupId) {
-		toSerialize["remoteSecurityGroupId"] = o.RemoteSecurityGroupId
+	if val, ok := getBaseSecurityGroupRuleGetRemoteSecurityGroupIdAttributeTypeOk(o.RemoteSecurityGroupId); ok {
+		toSerialize["RemoteSecurityGroupId"] = val
 	}
-	if !IsNil(o.SecurityGroupId) {
-		toSerialize["securityGroupId"] = o.SecurityGroupId
+	if val, ok := getBaseSecurityGroupRuleGetSecurityGroupIdAttributeTypeOk(o.SecurityGroupId); ok {
+		toSerialize["SecurityGroupId"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_boot_volume.go b/services/iaas/model_boot_volume.go
index b883774ee..c4140dc06 100644
--- a/services/iaas/model_boot_volume.go
+++ b/services/iaas/model_boot_volume.go
@@ -17,17 +17,119 @@ import (
 // checks if the BootVolume type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &BootVolume{}
 
+/*
+	types and functions for deleteOnTermination
+*/
+
+// isBoolean
+type BootVolumegetDeleteOnTerminationAttributeType = *bool
+type BootVolumegetDeleteOnTerminationArgType = bool
+type BootVolumegetDeleteOnTerminationRetType = bool
+
+func getBootVolumegetDeleteOnTerminationAttributeTypeOk(arg BootVolumegetDeleteOnTerminationAttributeType) (ret BootVolumegetDeleteOnTerminationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBootVolumegetDeleteOnTerminationAttributeType(arg *BootVolumegetDeleteOnTerminationAttributeType, val BootVolumegetDeleteOnTerminationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type BootVolumeGetIdAttributeType = *string
+
+func getBootVolumeGetIdAttributeTypeOk(arg BootVolumeGetIdAttributeType) (ret BootVolumeGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBootVolumeGetIdAttributeType(arg *BootVolumeGetIdAttributeType, val BootVolumeGetIdRetType) {
+	*arg = &val
+}
+
+type BootVolumeGetIdArgType = string
+type BootVolumeGetIdRetType = string
+
+/*
+	types and functions for performanceClass
+*/
+
+// isNotNullableString
+type BootVolumeGetPerformanceClassAttributeType = *string
+
+func getBootVolumeGetPerformanceClassAttributeTypeOk(arg BootVolumeGetPerformanceClassAttributeType) (ret BootVolumeGetPerformanceClassRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBootVolumeGetPerformanceClassAttributeType(arg *BootVolumeGetPerformanceClassAttributeType, val BootVolumeGetPerformanceClassRetType) {
+	*arg = &val
+}
+
+type BootVolumeGetPerformanceClassArgType = string
+type BootVolumeGetPerformanceClassRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type BootVolumeGetSizeAttributeType = *int64
+type BootVolumeGetSizeArgType = int64
+type BootVolumeGetSizeRetType = int64
+
+func getBootVolumeGetSizeAttributeTypeOk(arg BootVolumeGetSizeAttributeType) (ret BootVolumeGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBootVolumeGetSizeAttributeType(arg *BootVolumeGetSizeAttributeType, val BootVolumeGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for source
+*/
+
+// isModel
+type BootVolumeGetSourceAttributeType = *BootVolumeSource
+type BootVolumeGetSourceArgType = BootVolumeSource
+type BootVolumeGetSourceRetType = BootVolumeSource
+
+func getBootVolumeGetSourceAttributeTypeOk(arg BootVolumeGetSourceAttributeType) (ret BootVolumeGetSourceRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBootVolumeGetSourceAttributeType(arg *BootVolumeGetSourceAttributeType, val BootVolumeGetSourceRetType) {
+	*arg = &val
+}
+
 // BootVolume The boot device for the server.
 type BootVolume struct {
 	// Delete the volume during the termination of the server. Defaults to false.
-	DeleteOnTermination *bool `json:"deleteOnTermination,omitempty"`
+	DeleteOnTermination BootVolumegetDeleteOnTerminationAttributeType `json:"deleteOnTermination,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id BootVolumeGetIdAttributeType `json:"id,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	PerformanceClass *string `json:"performanceClass,omitempty"`
+	PerformanceClass BootVolumeGetPerformanceClassAttributeType `json:"performanceClass,omitempty"`
 	// Size in Gigabyte.
-	Size   *int64            `json:"size,omitempty"`
-	Source *BootVolumeSource `json:"source,omitempty"`
+	Size   BootVolumeGetSizeAttributeType   `json:"size,omitempty"`
+	Source BootVolumeGetSourceAttributeType `json:"source,omitempty"`
 }
 
 // NewBootVolume instantiates a new BootVolume object
@@ -48,181 +150,136 @@ func NewBootVolumeWithDefaults() *BootVolume {
 }
 
 // GetDeleteOnTermination returns the DeleteOnTermination field value if set, zero value otherwise.
-func (o *BootVolume) GetDeleteOnTermination() *bool {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		var ret *bool
-		return ret
-	}
-	return o.DeleteOnTermination
+func (o *BootVolume) GetDeleteOnTermination() (res BootVolumegetDeleteOnTerminationRetType) {
+	res, _ = o.GetDeleteOnTerminationOk()
+	return
 }
 
 // GetDeleteOnTerminationOk returns a tuple with the DeleteOnTermination field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BootVolume) GetDeleteOnTerminationOk() (*bool, bool) {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		return nil, false
-	}
-	return o.DeleteOnTermination, true
+func (o *BootVolume) GetDeleteOnTerminationOk() (ret BootVolumegetDeleteOnTerminationRetType, ok bool) {
+	return getBootVolumegetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination)
 }
 
 // HasDeleteOnTermination returns a boolean if a field has been set.
 func (o *BootVolume) HasDeleteOnTermination() bool {
-	if o != nil && !IsNil(o.DeleteOnTermination) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDeleteOnTerminationOk()
+	return ok
 }
 
 // SetDeleteOnTermination gets a reference to the given bool and assigns it to the DeleteOnTermination field.
-func (o *BootVolume) SetDeleteOnTermination(v *bool) {
-	o.DeleteOnTermination = v
+func (o *BootVolume) SetDeleteOnTermination(v BootVolumegetDeleteOnTerminationRetType) {
+	setBootVolumegetDeleteOnTerminationAttributeType(&o.DeleteOnTermination, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *BootVolume) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *BootVolume) GetId() (res BootVolumeGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BootVolume) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *BootVolume) GetIdOk() (ret BootVolumeGetIdRetType, ok bool) {
+	return getBootVolumeGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *BootVolume) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *BootVolume) SetId(v *string) {
-	o.Id = v
+func (o *BootVolume) SetId(v BootVolumeGetIdRetType) {
+	setBootVolumeGetIdAttributeType(&o.Id, v)
 }
 
 // GetPerformanceClass returns the PerformanceClass field value if set, zero value otherwise.
-func (o *BootVolume) GetPerformanceClass() *string {
-	if o == nil || IsNil(o.PerformanceClass) {
-		var ret *string
-		return ret
-	}
-	return o.PerformanceClass
+func (o *BootVolume) GetPerformanceClass() (res BootVolumeGetPerformanceClassRetType) {
+	res, _ = o.GetPerformanceClassOk()
+	return
 }
 
 // GetPerformanceClassOk returns a tuple with the PerformanceClass field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BootVolume) GetPerformanceClassOk() (*string, bool) {
-	if o == nil || IsNil(o.PerformanceClass) {
-		return nil, false
-	}
-	return o.PerformanceClass, true
+func (o *BootVolume) GetPerformanceClassOk() (ret BootVolumeGetPerformanceClassRetType, ok bool) {
+	return getBootVolumeGetPerformanceClassAttributeTypeOk(o.PerformanceClass)
 }
 
 // HasPerformanceClass returns a boolean if a field has been set.
 func (o *BootVolume) HasPerformanceClass() bool {
-	if o != nil && !IsNil(o.PerformanceClass) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPerformanceClassOk()
+	return ok
 }
 
 // SetPerformanceClass gets a reference to the given string and assigns it to the PerformanceClass field.
-func (o *BootVolume) SetPerformanceClass(v *string) {
-	o.PerformanceClass = v
+func (o *BootVolume) SetPerformanceClass(v BootVolumeGetPerformanceClassRetType) {
+	setBootVolumeGetPerformanceClassAttributeType(&o.PerformanceClass, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *BootVolume) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *BootVolume) GetSize() (res BootVolumeGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BootVolume) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *BootVolume) GetSizeOk() (ret BootVolumeGetSizeRetType, ok bool) {
+	return getBootVolumeGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *BootVolume) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *BootVolume) SetSize(v *int64) {
-	o.Size = v
+func (o *BootVolume) SetSize(v BootVolumeGetSizeRetType) {
+	setBootVolumeGetSizeAttributeType(&o.Size, v)
 }
 
 // GetSource returns the Source field value if set, zero value otherwise.
-func (o *BootVolume) GetSource() *BootVolumeSource {
-	if o == nil || IsNil(o.Source) {
-		var ret *BootVolumeSource
-		return ret
-	}
-	return o.Source
+func (o *BootVolume) GetSource() (res BootVolumeGetSourceRetType) {
+	res, _ = o.GetSourceOk()
+	return
 }
 
 // GetSourceOk returns a tuple with the Source field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *BootVolume) GetSourceOk() (*BootVolumeSource, bool) {
-	if o == nil || IsNil(o.Source) {
-		return nil, false
-	}
-	return o.Source, true
+func (o *BootVolume) GetSourceOk() (ret BootVolumeGetSourceRetType, ok bool) {
+	return getBootVolumeGetSourceAttributeTypeOk(o.Source)
 }
 
 // HasSource returns a boolean if a field has been set.
 func (o *BootVolume) HasSource() bool {
-	if o != nil && !IsNil(o.Source) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSourceOk()
+	return ok
 }
 
 // SetSource gets a reference to the given BootVolumeSource and assigns it to the Source field.
-func (o *BootVolume) SetSource(v *BootVolumeSource) {
-	o.Source = v
+func (o *BootVolume) SetSource(v BootVolumeGetSourceRetType) {
+	setBootVolumeGetSourceAttributeType(&o.Source, v)
 }
 
 func (o BootVolume) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DeleteOnTermination) {
-		toSerialize["deleteOnTermination"] = o.DeleteOnTermination
+	if val, ok := getBootVolumegetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination); ok {
+		toSerialize["DeleteOnTermination"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getBootVolumeGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.PerformanceClass) {
-		toSerialize["performanceClass"] = o.PerformanceClass
+	if val, ok := getBootVolumeGetPerformanceClassAttributeTypeOk(o.PerformanceClass); ok {
+		toSerialize["PerformanceClass"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getBootVolumeGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Source) {
-		toSerialize["source"] = o.Source
+	if val, ok := getBootVolumeGetSourceAttributeTypeOk(o.Source); ok {
+		toSerialize["Source"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_boot_volume_source.go b/services/iaas/model_boot_volume_source.go
index a05088ee4..3012619b7 100644
--- a/services/iaas/model_boot_volume_source.go
+++ b/services/iaas/model_boot_volume_source.go
@@ -17,14 +17,56 @@ import (
 // checks if the BootVolumeSource type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &BootVolumeSource{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type BootVolumeSourceGetIdAttributeType = *string
+
+func getBootVolumeSourceGetIdAttributeTypeOk(arg BootVolumeSourceGetIdAttributeType) (ret BootVolumeSourceGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBootVolumeSourceGetIdAttributeType(arg *BootVolumeSourceGetIdAttributeType, val BootVolumeSourceGetIdRetType) {
+	*arg = &val
+}
+
+type BootVolumeSourceGetIdArgType = string
+type BootVolumeSourceGetIdRetType = string
+
+/*
+	types and functions for type
+*/
+
+// isNotNullableString
+type BootVolumeSourceGetTypeAttributeType = *string
+
+func getBootVolumeSourceGetTypeAttributeTypeOk(arg BootVolumeSourceGetTypeAttributeType) (ret BootVolumeSourceGetTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setBootVolumeSourceGetTypeAttributeType(arg *BootVolumeSourceGetTypeAttributeType, val BootVolumeSourceGetTypeRetType) {
+	*arg = &val
+}
+
+type BootVolumeSourceGetTypeArgType = string
+type BootVolumeSourceGetTypeRetType = string
+
 // BootVolumeSource struct for BootVolumeSource
 type BootVolumeSource struct {
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	Id *string `json:"id"`
+	Id BootVolumeSourceGetIdAttributeType `json:"id"`
 	// The source types of a boot volume. Possible values: `image`, `volume`.
 	// REQUIRED
-	Type *string `json:"type"`
+	Type BootVolumeSourceGetTypeAttributeType `json:"type"`
 }
 
 type _BootVolumeSource BootVolumeSource
@@ -33,10 +75,10 @@ type _BootVolumeSource BootVolumeSource
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewBootVolumeSource(id *string, type_ *string) *BootVolumeSource {
+func NewBootVolumeSource(id BootVolumeSourceGetIdArgType, type_ BootVolumeSourceGetTypeArgType) *BootVolumeSource {
 	this := BootVolumeSource{}
-	this.Id = id
-	this.Type = type_
+	setBootVolumeSourceGetIdAttributeType(&this.Id, id)
+	setBootVolumeSourceGetTypeAttributeType(&this.Type, type_)
 	return &this
 }
 
@@ -49,57 +91,47 @@ func NewBootVolumeSourceWithDefaults() *BootVolumeSource {
 }
 
 // GetId returns the Id field value
-func (o *BootVolumeSource) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-
-	return o.Id
+func (o *BootVolumeSource) GetId() (ret BootVolumeSourceGetIdRetType) {
+	ret, _ = o.GetIdOk()
+	return ret
 }
 
 // GetIdOk returns a tuple with the Id field value
 // and a boolean to check if the value has been set.
-func (o *BootVolumeSource) GetIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Id, true
+func (o *BootVolumeSource) GetIdOk() (ret BootVolumeSourceGetIdRetType, ok bool) {
+	return getBootVolumeSourceGetIdAttributeTypeOk(o.Id)
 }
 
 // SetId sets field value
-func (o *BootVolumeSource) SetId(v *string) {
-	o.Id = v
+func (o *BootVolumeSource) SetId(v BootVolumeSourceGetIdRetType) {
+	setBootVolumeSourceGetIdAttributeType(&o.Id, v)
 }
 
 // GetType returns the Type field value
-func (o *BootVolumeSource) GetType() *string {
-	if o == nil || IsNil(o.Type) {
-		var ret *string
-		return ret
-	}
-
-	return o.Type
+func (o *BootVolumeSource) GetType() (ret BootVolumeSourceGetTypeRetType) {
+	ret, _ = o.GetTypeOk()
+	return ret
 }
 
 // GetTypeOk returns a tuple with the Type field value
 // and a boolean to check if the value has been set.
-func (o *BootVolumeSource) GetTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Type, true
+func (o *BootVolumeSource) GetTypeOk() (ret BootVolumeSourceGetTypeRetType, ok bool) {
+	return getBootVolumeSourceGetTypeAttributeTypeOk(o.Type)
 }
 
 // SetType sets field value
-func (o *BootVolumeSource) SetType(v *string) {
-	o.Type = v
+func (o *BootVolumeSource) SetType(v BootVolumeSourceGetTypeRetType) {
+	setBootVolumeSourceGetTypeAttributeType(&o.Type, v)
 }
 
 func (o BootVolumeSource) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["id"] = o.Id
-	toSerialize["type"] = o.Type
+	if val, ok := getBootVolumeSourceGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
+	}
+	if val, ok := getBootVolumeSourceGetTypeAttributeTypeOk(o.Type); ok {
+		toSerialize["Type"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_create_affinity_group_payload.go b/services/iaas/model_create_affinity_group_payload.go
index b51a05fd6..5875c2173 100644
--- a/services/iaas/model_create_affinity_group_payload.go
+++ b/services/iaas/model_create_affinity_group_payload.go
@@ -17,18 +17,101 @@ import (
 // checks if the CreateAffinityGroupPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateAffinityGroupPayload{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateAffinityGroupPayloadGetIdAttributeType = *string
+
+func getCreateAffinityGroupPayloadGetIdAttributeTypeOk(arg CreateAffinityGroupPayloadGetIdAttributeType) (ret CreateAffinityGroupPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAffinityGroupPayloadGetIdAttributeType(arg *CreateAffinityGroupPayloadGetIdAttributeType, val CreateAffinityGroupPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateAffinityGroupPayloadGetIdArgType = string
+type CreateAffinityGroupPayloadGetIdRetType = string
+
+/*
+	types and functions for members
+*/
+
+// isArray
+type CreateAffinityGroupPayloadGetMembersAttributeType = *[]string
+type CreateAffinityGroupPayloadGetMembersArgType = []string
+type CreateAffinityGroupPayloadGetMembersRetType = []string
+
+func getCreateAffinityGroupPayloadGetMembersAttributeTypeOk(arg CreateAffinityGroupPayloadGetMembersAttributeType) (ret CreateAffinityGroupPayloadGetMembersRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAffinityGroupPayloadGetMembersAttributeType(arg *CreateAffinityGroupPayloadGetMembersAttributeType, val CreateAffinityGroupPayloadGetMembersRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateAffinityGroupPayloadGetNameAttributeType = *string
+
+func getCreateAffinityGroupPayloadGetNameAttributeTypeOk(arg CreateAffinityGroupPayloadGetNameAttributeType) (ret CreateAffinityGroupPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAffinityGroupPayloadGetNameAttributeType(arg *CreateAffinityGroupPayloadGetNameAttributeType, val CreateAffinityGroupPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateAffinityGroupPayloadGetNameArgType = string
+type CreateAffinityGroupPayloadGetNameRetType = string
+
+/*
+	types and functions for policy
+*/
+
+// isNotNullableString
+type CreateAffinityGroupPayloadGetPolicyAttributeType = *string
+
+func getCreateAffinityGroupPayloadGetPolicyAttributeTypeOk(arg CreateAffinityGroupPayloadGetPolicyAttributeType) (ret CreateAffinityGroupPayloadGetPolicyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAffinityGroupPayloadGetPolicyAttributeType(arg *CreateAffinityGroupPayloadGetPolicyAttributeType, val CreateAffinityGroupPayloadGetPolicyRetType) {
+	*arg = &val
+}
+
+type CreateAffinityGroupPayloadGetPolicyArgType = string
+type CreateAffinityGroupPayloadGetPolicyRetType = string
+
 // CreateAffinityGroupPayload Definition of an affinity group.
 type CreateAffinityGroupPayload struct {
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateAffinityGroupPayloadGetIdAttributeType `json:"id,omitempty"`
 	// The servers that are part of the affinity group.
-	Members *[]string `json:"members,omitempty"`
+	Members CreateAffinityGroupPayloadGetMembersAttributeType `json:"members,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name CreateAffinityGroupPayloadGetNameAttributeType `json:"name"`
 	// The affinity group policy. `hard-affinity`: All servers in this group will be hosted on the same compute node. `soft-affinity`: All servers in this group will be hosted on as few compute nodes as possible. `hard-anti-affinity`: All servers in this group will be hosted on different compute nodes. `soft-anti-affinity`: All servers in this group will be hosted on as many compute nodes as possible. Possible values: `hard-anti-affinity`, `hard-affinity`, `soft-anti-affinity`, `soft-affinity`.
 	// REQUIRED
-	Policy *string `json:"policy"`
+	Policy CreateAffinityGroupPayloadGetPolicyAttributeType `json:"policy"`
 }
 
 type _CreateAffinityGroupPayload CreateAffinityGroupPayload
@@ -37,10 +120,10 @@ type _CreateAffinityGroupPayload CreateAffinityGroupPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateAffinityGroupPayload(name *string, policy *string) *CreateAffinityGroupPayload {
+func NewCreateAffinityGroupPayload(name CreateAffinityGroupPayloadGetNameArgType, policy CreateAffinityGroupPayloadGetPolicyArgType) *CreateAffinityGroupPayload {
 	this := CreateAffinityGroupPayload{}
-	this.Name = name
-	this.Policy = policy
+	setCreateAffinityGroupPayloadGetNameAttributeType(&this.Name, name)
+	setCreateAffinityGroupPayloadGetPolicyAttributeType(&this.Policy, policy)
 	return &this
 }
 
@@ -53,127 +136,99 @@ func NewCreateAffinityGroupPayloadWithDefaults() *CreateAffinityGroupPayload {
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateAffinityGroupPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateAffinityGroupPayload) GetId() (res CreateAffinityGroupPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAffinityGroupPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateAffinityGroupPayload) GetIdOk() (ret CreateAffinityGroupPayloadGetIdRetType, ok bool) {
+	return getCreateAffinityGroupPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateAffinityGroupPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateAffinityGroupPayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateAffinityGroupPayload) SetId(v CreateAffinityGroupPayloadGetIdRetType) {
+	setCreateAffinityGroupPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetMembers returns the Members field value if set, zero value otherwise.
-func (o *CreateAffinityGroupPayload) GetMembers() *[]string {
-	if o == nil || IsNil(o.Members) {
-		var ret *[]string
-		return ret
-	}
-	return o.Members
+func (o *CreateAffinityGroupPayload) GetMembers() (res CreateAffinityGroupPayloadGetMembersRetType) {
+	res, _ = o.GetMembersOk()
+	return
 }
 
 // GetMembersOk returns a tuple with the Members field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAffinityGroupPayload) GetMembersOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Members) {
-		return nil, false
-	}
-	return o.Members, true
+func (o *CreateAffinityGroupPayload) GetMembersOk() (ret CreateAffinityGroupPayloadGetMembersRetType, ok bool) {
+	return getCreateAffinityGroupPayloadGetMembersAttributeTypeOk(o.Members)
 }
 
 // HasMembers returns a boolean if a field has been set.
 func (o *CreateAffinityGroupPayload) HasMembers() bool {
-	if o != nil && !IsNil(o.Members) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMembersOk()
+	return ok
 }
 
 // SetMembers gets a reference to the given []string and assigns it to the Members field.
-func (o *CreateAffinityGroupPayload) SetMembers(v *[]string) {
-	o.Members = v
+func (o *CreateAffinityGroupPayload) SetMembers(v CreateAffinityGroupPayloadGetMembersRetType) {
+	setCreateAffinityGroupPayloadGetMembersAttributeType(&o.Members, v)
 }
 
 // GetName returns the Name field value
-func (o *CreateAffinityGroupPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *CreateAffinityGroupPayload) GetName() (ret CreateAffinityGroupPayloadGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *CreateAffinityGroupPayload) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateAffinityGroupPayload) GetNameOk() (ret CreateAffinityGroupPayloadGetNameRetType, ok bool) {
+	return getCreateAffinityGroupPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *CreateAffinityGroupPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateAffinityGroupPayload) SetName(v CreateAffinityGroupPayloadGetNameRetType) {
+	setCreateAffinityGroupPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetPolicy returns the Policy field value
-func (o *CreateAffinityGroupPayload) GetPolicy() *string {
-	if o == nil || IsNil(o.Policy) {
-		var ret *string
-		return ret
-	}
-
-	return o.Policy
+func (o *CreateAffinityGroupPayload) GetPolicy() (ret CreateAffinityGroupPayloadGetPolicyRetType) {
+	ret, _ = o.GetPolicyOk()
+	return ret
 }
 
 // GetPolicyOk returns a tuple with the Policy field value
 // and a boolean to check if the value has been set.
-func (o *CreateAffinityGroupPayload) GetPolicyOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Policy, true
+func (o *CreateAffinityGroupPayload) GetPolicyOk() (ret CreateAffinityGroupPayloadGetPolicyRetType, ok bool) {
+	return getCreateAffinityGroupPayloadGetPolicyAttributeTypeOk(o.Policy)
 }
 
 // SetPolicy sets field value
-func (o *CreateAffinityGroupPayload) SetPolicy(v *string) {
-	o.Policy = v
+func (o *CreateAffinityGroupPayload) SetPolicy(v CreateAffinityGroupPayloadGetPolicyRetType) {
+	setCreateAffinityGroupPayloadGetPolicyAttributeType(&o.Policy, v)
 }
 
 func (o CreateAffinityGroupPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateAffinityGroupPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
+	}
+	if val, ok := getCreateAffinityGroupPayloadGetMembersAttributeTypeOk(o.Members); ok {
+		toSerialize["Members"] = val
+	}
+	if val, ok := getCreateAffinityGroupPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Members) {
-		toSerialize["members"] = o.Members
+	if val, ok := getCreateAffinityGroupPayloadGetPolicyAttributeTypeOk(o.Policy); ok {
+		toSerialize["Policy"] = val
 	}
-	toSerialize["name"] = o.Name
-	toSerialize["policy"] = o.Policy
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_create_area_address_family.go b/services/iaas/model_create_area_address_family.go
index 4933bf32d..a85f6cd69 100644
--- a/services/iaas/model_create_area_address_family.go
+++ b/services/iaas/model_create_area_address_family.go
@@ -17,9 +17,29 @@ import (
 // checks if the CreateAreaAddressFamily type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateAreaAddressFamily{}
 
+/*
+	types and functions for ipv4
+*/
+
+// isModel
+type CreateAreaAddressFamilyGetIpv4AttributeType = *CreateAreaIPv4
+type CreateAreaAddressFamilyGetIpv4ArgType = CreateAreaIPv4
+type CreateAreaAddressFamilyGetIpv4RetType = CreateAreaIPv4
+
+func getCreateAreaAddressFamilyGetIpv4AttributeTypeOk(arg CreateAreaAddressFamilyGetIpv4AttributeType) (ret CreateAreaAddressFamilyGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaAddressFamilyGetIpv4AttributeType(arg *CreateAreaAddressFamilyGetIpv4AttributeType, val CreateAreaAddressFamilyGetIpv4RetType) {
+	*arg = &val
+}
+
 // CreateAreaAddressFamily The addressFamily object for a area create request.
 type CreateAreaAddressFamily struct {
-	Ipv4 *CreateAreaIPv4 `json:"ipv4,omitempty"`
+	Ipv4 CreateAreaAddressFamilyGetIpv4AttributeType `json:"ipv4,omitempty"`
 }
 
 // NewCreateAreaAddressFamily instantiates a new CreateAreaAddressFamily object
@@ -40,41 +60,32 @@ func NewCreateAreaAddressFamilyWithDefaults() *CreateAreaAddressFamily {
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *CreateAreaAddressFamily) GetIpv4() *CreateAreaIPv4 {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *CreateAreaIPv4
-		return ret
-	}
-	return o.Ipv4
+func (o *CreateAreaAddressFamily) GetIpv4() (res CreateAreaAddressFamilyGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAreaAddressFamily) GetIpv4Ok() (*CreateAreaIPv4, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *CreateAreaAddressFamily) GetIpv4Ok() (ret CreateAreaAddressFamilyGetIpv4RetType, ok bool) {
+	return getCreateAreaAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *CreateAreaAddressFamily) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given CreateAreaIPv4 and assigns it to the Ipv4 field.
-func (o *CreateAreaAddressFamily) SetIpv4(v *CreateAreaIPv4) {
-	o.Ipv4 = v
+func (o *CreateAreaAddressFamily) SetIpv4(v CreateAreaAddressFamilyGetIpv4RetType) {
+	setCreateAreaAddressFamilyGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 func (o CreateAreaAddressFamily) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getCreateAreaAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_area_ipv4.go b/services/iaas/model_create_area_ipv4.go
index 283430dcd..370dd9aad 100644
--- a/services/iaas/model_create_area_ipv4.go
+++ b/services/iaas/model_create_area_ipv4.go
@@ -17,23 +17,164 @@ import (
 // checks if the CreateAreaIPv4 type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateAreaIPv4{}
 
+/*
+	types and functions for defaultNameservers
+*/
+
+// isArray
+type CreateAreaIPv4GetDefaultNameserversAttributeType = *[]string
+type CreateAreaIPv4GetDefaultNameserversArgType = []string
+type CreateAreaIPv4GetDefaultNameserversRetType = []string
+
+func getCreateAreaIPv4GetDefaultNameserversAttributeTypeOk(arg CreateAreaIPv4GetDefaultNameserversAttributeType) (ret CreateAreaIPv4GetDefaultNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaIPv4GetDefaultNameserversAttributeType(arg *CreateAreaIPv4GetDefaultNameserversAttributeType, val CreateAreaIPv4GetDefaultNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkRanges
+*/
+
+// isArray
+type CreateAreaIPv4GetNetworkRangesAttributeType = *[]NetworkRange
+type CreateAreaIPv4GetNetworkRangesArgType = []NetworkRange
+type CreateAreaIPv4GetNetworkRangesRetType = []NetworkRange
+
+func getCreateAreaIPv4GetNetworkRangesAttributeTypeOk(arg CreateAreaIPv4GetNetworkRangesAttributeType) (ret CreateAreaIPv4GetNetworkRangesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaIPv4GetNetworkRangesAttributeType(arg *CreateAreaIPv4GetNetworkRangesAttributeType, val CreateAreaIPv4GetNetworkRangesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for routes
+*/
+
+// isArray
+type CreateAreaIPv4GetRoutesAttributeType = *[]Route
+type CreateAreaIPv4GetRoutesArgType = []Route
+type CreateAreaIPv4GetRoutesRetType = []Route
+
+func getCreateAreaIPv4GetRoutesAttributeTypeOk(arg CreateAreaIPv4GetRoutesAttributeType) (ret CreateAreaIPv4GetRoutesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaIPv4GetRoutesAttributeType(arg *CreateAreaIPv4GetRoutesAttributeType, val CreateAreaIPv4GetRoutesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for transferNetwork
+*/
+
+// isNotNullableString
+type CreateAreaIPv4GetTransferNetworkAttributeType = *string
+
+func getCreateAreaIPv4GetTransferNetworkAttributeTypeOk(arg CreateAreaIPv4GetTransferNetworkAttributeType) (ret CreateAreaIPv4GetTransferNetworkRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaIPv4GetTransferNetworkAttributeType(arg *CreateAreaIPv4GetTransferNetworkAttributeType, val CreateAreaIPv4GetTransferNetworkRetType) {
+	*arg = &val
+}
+
+type CreateAreaIPv4GetTransferNetworkArgType = string
+type CreateAreaIPv4GetTransferNetworkRetType = string
+
+/*
+	types and functions for defaultPrefixLen
+*/
+
+// isInteger
+type CreateAreaIPv4GetDefaultPrefixLenAttributeType = *int64
+type CreateAreaIPv4GetDefaultPrefixLenArgType = int64
+type CreateAreaIPv4GetDefaultPrefixLenRetType = int64
+
+func getCreateAreaIPv4GetDefaultPrefixLenAttributeTypeOk(arg CreateAreaIPv4GetDefaultPrefixLenAttributeType) (ret CreateAreaIPv4GetDefaultPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaIPv4GetDefaultPrefixLenAttributeType(arg *CreateAreaIPv4GetDefaultPrefixLenAttributeType, val CreateAreaIPv4GetDefaultPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for maxPrefixLen
+*/
+
+// isInteger
+type CreateAreaIPv4GetMaxPrefixLenAttributeType = *int64
+type CreateAreaIPv4GetMaxPrefixLenArgType = int64
+type CreateAreaIPv4GetMaxPrefixLenRetType = int64
+
+func getCreateAreaIPv4GetMaxPrefixLenAttributeTypeOk(arg CreateAreaIPv4GetMaxPrefixLenAttributeType) (ret CreateAreaIPv4GetMaxPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaIPv4GetMaxPrefixLenAttributeType(arg *CreateAreaIPv4GetMaxPrefixLenAttributeType, val CreateAreaIPv4GetMaxPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minPrefixLen
+*/
+
+// isInteger
+type CreateAreaIPv4GetMinPrefixLenAttributeType = *int64
+type CreateAreaIPv4GetMinPrefixLenArgType = int64
+type CreateAreaIPv4GetMinPrefixLenRetType = int64
+
+func getCreateAreaIPv4GetMinPrefixLenAttributeTypeOk(arg CreateAreaIPv4GetMinPrefixLenAttributeType) (ret CreateAreaIPv4GetMinPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateAreaIPv4GetMinPrefixLenAttributeType(arg *CreateAreaIPv4GetMinPrefixLenAttributeType, val CreateAreaIPv4GetMinPrefixLenRetType) {
+	*arg = &val
+}
+
 // CreateAreaIPv4 The config object for a IPv4 network area.
 type CreateAreaIPv4 struct {
-	DefaultNameservers *[]string `json:"defaultNameservers,omitempty"`
+	DefaultNameservers CreateAreaIPv4GetDefaultNameserversAttributeType `json:"defaultNameservers,omitempty"`
 	// A list of network ranges.
 	// REQUIRED
-	NetworkRanges *[]NetworkRange `json:"networkRanges"`
+	NetworkRanges CreateAreaIPv4GetNetworkRangesAttributeType `json:"networkRanges"`
 	// A list of routes.
-	Routes *[]Route `json:"routes,omitempty"`
+	Routes CreateAreaIPv4GetRoutesAttributeType `json:"routes,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
 	// REQUIRED
-	TransferNetwork *string `json:"transferNetwork"`
+	TransferNetwork CreateAreaIPv4GetTransferNetworkAttributeType `json:"transferNetwork"`
 	// The default prefix length for networks in the network area.
-	DefaultPrefixLen *int64 `json:"defaultPrefixLen,omitempty"`
+	DefaultPrefixLen CreateAreaIPv4GetDefaultPrefixLenAttributeType `json:"defaultPrefixLen,omitempty"`
 	// The maximal prefix length for networks in the network area.
-	MaxPrefixLen *int64 `json:"maxPrefixLen,omitempty"`
+	MaxPrefixLen CreateAreaIPv4GetMaxPrefixLenAttributeType `json:"maxPrefixLen,omitempty"`
 	// The minimal prefix length for networks in the network area.
-	MinPrefixLen *int64 `json:"minPrefixLen,omitempty"`
+	MinPrefixLen CreateAreaIPv4GetMinPrefixLenAttributeType `json:"minPrefixLen,omitempty"`
 }
 
 type _CreateAreaIPv4 CreateAreaIPv4
@@ -42,16 +183,10 @@ type _CreateAreaIPv4 CreateAreaIPv4
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateAreaIPv4(networkRanges *[]NetworkRange, transferNetwork *string) *CreateAreaIPv4 {
+func NewCreateAreaIPv4(networkRanges CreateAreaIPv4GetNetworkRangesArgType, transferNetwork CreateAreaIPv4GetTransferNetworkArgType) *CreateAreaIPv4 {
 	this := CreateAreaIPv4{}
-	this.NetworkRanges = networkRanges
-	this.TransferNetwork = transferNetwork
-	var defaultPrefixLen int64 = 25
-	this.DefaultPrefixLen = &defaultPrefixLen
-	var maxPrefixLen int64 = 29
-	this.MaxPrefixLen = &maxPrefixLen
-	var minPrefixLen int64 = 24
-	this.MinPrefixLen = &minPrefixLen
+	setCreateAreaIPv4GetNetworkRangesAttributeType(&this.NetworkRanges, networkRanges)
+	setCreateAreaIPv4GetTransferNetworkAttributeType(&this.TransferNetwork, transferNetwork)
 	return &this
 }
 
@@ -70,231 +205,176 @@ func NewCreateAreaIPv4WithDefaults() *CreateAreaIPv4 {
 }
 
 // GetDefaultNameservers returns the DefaultNameservers field value if set, zero value otherwise.
-func (o *CreateAreaIPv4) GetDefaultNameservers() *[]string {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.DefaultNameservers
+func (o *CreateAreaIPv4) GetDefaultNameservers() (res CreateAreaIPv4GetDefaultNameserversRetType) {
+	res, _ = o.GetDefaultNameserversOk()
+	return
 }
 
 // GetDefaultNameserversOk returns a tuple with the DefaultNameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAreaIPv4) GetDefaultNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		return nil, false
-	}
-	return o.DefaultNameservers, true
+func (o *CreateAreaIPv4) GetDefaultNameserversOk() (ret CreateAreaIPv4GetDefaultNameserversRetType, ok bool) {
+	return getCreateAreaIPv4GetDefaultNameserversAttributeTypeOk(o.DefaultNameservers)
 }
 
 // HasDefaultNameservers returns a boolean if a field has been set.
 func (o *CreateAreaIPv4) HasDefaultNameservers() bool {
-	if o != nil && !IsNil(o.DefaultNameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultNameserversOk()
+	return ok
 }
 
 // SetDefaultNameservers gets a reference to the given []string and assigns it to the DefaultNameservers field.
-func (o *CreateAreaIPv4) SetDefaultNameservers(v *[]string) {
-	o.DefaultNameservers = v
+func (o *CreateAreaIPv4) SetDefaultNameservers(v CreateAreaIPv4GetDefaultNameserversRetType) {
+	setCreateAreaIPv4GetDefaultNameserversAttributeType(&o.DefaultNameservers, v)
 }
 
 // GetNetworkRanges returns the NetworkRanges field value
-func (o *CreateAreaIPv4) GetNetworkRanges() *[]NetworkRange {
-	if o == nil || IsNil(o.NetworkRanges) {
-		var ret *[]NetworkRange
-		return ret
-	}
-
-	return o.NetworkRanges
+func (o *CreateAreaIPv4) GetNetworkRanges() (ret CreateAreaIPv4GetNetworkRangesRetType) {
+	ret, _ = o.GetNetworkRangesOk()
+	return ret
 }
 
 // GetNetworkRangesOk returns a tuple with the NetworkRanges field value
 // and a boolean to check if the value has been set.
-func (o *CreateAreaIPv4) GetNetworkRangesOk() (*[]NetworkRange, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.NetworkRanges, true
+func (o *CreateAreaIPv4) GetNetworkRangesOk() (ret CreateAreaIPv4GetNetworkRangesRetType, ok bool) {
+	return getCreateAreaIPv4GetNetworkRangesAttributeTypeOk(o.NetworkRanges)
 }
 
 // SetNetworkRanges sets field value
-func (o *CreateAreaIPv4) SetNetworkRanges(v *[]NetworkRange) {
-	o.NetworkRanges = v
+func (o *CreateAreaIPv4) SetNetworkRanges(v CreateAreaIPv4GetNetworkRangesRetType) {
+	setCreateAreaIPv4GetNetworkRangesAttributeType(&o.NetworkRanges, v)
 }
 
 // GetRoutes returns the Routes field value if set, zero value otherwise.
-func (o *CreateAreaIPv4) GetRoutes() *[]Route {
-	if o == nil || IsNil(o.Routes) {
-		var ret *[]Route
-		return ret
-	}
-	return o.Routes
+func (o *CreateAreaIPv4) GetRoutes() (res CreateAreaIPv4GetRoutesRetType) {
+	res, _ = o.GetRoutesOk()
+	return
 }
 
 // GetRoutesOk returns a tuple with the Routes field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAreaIPv4) GetRoutesOk() (*[]Route, bool) {
-	if o == nil || IsNil(o.Routes) {
-		return nil, false
-	}
-	return o.Routes, true
+func (o *CreateAreaIPv4) GetRoutesOk() (ret CreateAreaIPv4GetRoutesRetType, ok bool) {
+	return getCreateAreaIPv4GetRoutesAttributeTypeOk(o.Routes)
 }
 
 // HasRoutes returns a boolean if a field has been set.
 func (o *CreateAreaIPv4) HasRoutes() bool {
-	if o != nil && !IsNil(o.Routes) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRoutesOk()
+	return ok
 }
 
 // SetRoutes gets a reference to the given []Route and assigns it to the Routes field.
-func (o *CreateAreaIPv4) SetRoutes(v *[]Route) {
-	o.Routes = v
+func (o *CreateAreaIPv4) SetRoutes(v CreateAreaIPv4GetRoutesRetType) {
+	setCreateAreaIPv4GetRoutesAttributeType(&o.Routes, v)
 }
 
 // GetTransferNetwork returns the TransferNetwork field value
-func (o *CreateAreaIPv4) GetTransferNetwork() *string {
-	if o == nil || IsNil(o.TransferNetwork) {
-		var ret *string
-		return ret
-	}
-
-	return o.TransferNetwork
+func (o *CreateAreaIPv4) GetTransferNetwork() (ret CreateAreaIPv4GetTransferNetworkRetType) {
+	ret, _ = o.GetTransferNetworkOk()
+	return ret
 }
 
 // GetTransferNetworkOk returns a tuple with the TransferNetwork field value
 // and a boolean to check if the value has been set.
-func (o *CreateAreaIPv4) GetTransferNetworkOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.TransferNetwork, true
+func (o *CreateAreaIPv4) GetTransferNetworkOk() (ret CreateAreaIPv4GetTransferNetworkRetType, ok bool) {
+	return getCreateAreaIPv4GetTransferNetworkAttributeTypeOk(o.TransferNetwork)
 }
 
 // SetTransferNetwork sets field value
-func (o *CreateAreaIPv4) SetTransferNetwork(v *string) {
-	o.TransferNetwork = v
+func (o *CreateAreaIPv4) SetTransferNetwork(v CreateAreaIPv4GetTransferNetworkRetType) {
+	setCreateAreaIPv4GetTransferNetworkAttributeType(&o.TransferNetwork, v)
 }
 
 // GetDefaultPrefixLen returns the DefaultPrefixLen field value if set, zero value otherwise.
-func (o *CreateAreaIPv4) GetDefaultPrefixLen() *int64 {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.DefaultPrefixLen
+func (o *CreateAreaIPv4) GetDefaultPrefixLen() (res CreateAreaIPv4GetDefaultPrefixLenRetType) {
+	res, _ = o.GetDefaultPrefixLenOk()
+	return
 }
 
 // GetDefaultPrefixLenOk returns a tuple with the DefaultPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAreaIPv4) GetDefaultPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		return nil, false
-	}
-	return o.DefaultPrefixLen, true
+func (o *CreateAreaIPv4) GetDefaultPrefixLenOk() (ret CreateAreaIPv4GetDefaultPrefixLenRetType, ok bool) {
+	return getCreateAreaIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen)
 }
 
 // HasDefaultPrefixLen returns a boolean if a field has been set.
 func (o *CreateAreaIPv4) HasDefaultPrefixLen() bool {
-	if o != nil && !IsNil(o.DefaultPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultPrefixLenOk()
+	return ok
 }
 
 // SetDefaultPrefixLen gets a reference to the given int64 and assigns it to the DefaultPrefixLen field.
-func (o *CreateAreaIPv4) SetDefaultPrefixLen(v *int64) {
-	o.DefaultPrefixLen = v
+func (o *CreateAreaIPv4) SetDefaultPrefixLen(v CreateAreaIPv4GetDefaultPrefixLenRetType) {
+	setCreateAreaIPv4GetDefaultPrefixLenAttributeType(&o.DefaultPrefixLen, v)
 }
 
 // GetMaxPrefixLen returns the MaxPrefixLen field value if set, zero value otherwise.
-func (o *CreateAreaIPv4) GetMaxPrefixLen() *int64 {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MaxPrefixLen
+func (o *CreateAreaIPv4) GetMaxPrefixLen() (res CreateAreaIPv4GetMaxPrefixLenRetType) {
+	res, _ = o.GetMaxPrefixLenOk()
+	return
 }
 
 // GetMaxPrefixLenOk returns a tuple with the MaxPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAreaIPv4) GetMaxPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		return nil, false
-	}
-	return o.MaxPrefixLen, true
+func (o *CreateAreaIPv4) GetMaxPrefixLenOk() (ret CreateAreaIPv4GetMaxPrefixLenRetType, ok bool) {
+	return getCreateAreaIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen)
 }
 
 // HasMaxPrefixLen returns a boolean if a field has been set.
 func (o *CreateAreaIPv4) HasMaxPrefixLen() bool {
-	if o != nil && !IsNil(o.MaxPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMaxPrefixLenOk()
+	return ok
 }
 
 // SetMaxPrefixLen gets a reference to the given int64 and assigns it to the MaxPrefixLen field.
-func (o *CreateAreaIPv4) SetMaxPrefixLen(v *int64) {
-	o.MaxPrefixLen = v
+func (o *CreateAreaIPv4) SetMaxPrefixLen(v CreateAreaIPv4GetMaxPrefixLenRetType) {
+	setCreateAreaIPv4GetMaxPrefixLenAttributeType(&o.MaxPrefixLen, v)
 }
 
 // GetMinPrefixLen returns the MinPrefixLen field value if set, zero value otherwise.
-func (o *CreateAreaIPv4) GetMinPrefixLen() *int64 {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MinPrefixLen
+func (o *CreateAreaIPv4) GetMinPrefixLen() (res CreateAreaIPv4GetMinPrefixLenRetType) {
+	res, _ = o.GetMinPrefixLenOk()
+	return
 }
 
 // GetMinPrefixLenOk returns a tuple with the MinPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateAreaIPv4) GetMinPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		return nil, false
-	}
-	return o.MinPrefixLen, true
+func (o *CreateAreaIPv4) GetMinPrefixLenOk() (ret CreateAreaIPv4GetMinPrefixLenRetType, ok bool) {
+	return getCreateAreaIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen)
 }
 
 // HasMinPrefixLen returns a boolean if a field has been set.
 func (o *CreateAreaIPv4) HasMinPrefixLen() bool {
-	if o != nil && !IsNil(o.MinPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinPrefixLenOk()
+	return ok
 }
 
 // SetMinPrefixLen gets a reference to the given int64 and assigns it to the MinPrefixLen field.
-func (o *CreateAreaIPv4) SetMinPrefixLen(v *int64) {
-	o.MinPrefixLen = v
+func (o *CreateAreaIPv4) SetMinPrefixLen(v CreateAreaIPv4GetMinPrefixLenRetType) {
+	setCreateAreaIPv4GetMinPrefixLenAttributeType(&o.MinPrefixLen, v)
 }
 
 func (o CreateAreaIPv4) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DefaultNameservers) {
-		toSerialize["defaultNameservers"] = o.DefaultNameservers
+	if val, ok := getCreateAreaIPv4GetDefaultNameserversAttributeTypeOk(o.DefaultNameservers); ok {
+		toSerialize["DefaultNameservers"] = val
+	}
+	if val, ok := getCreateAreaIPv4GetNetworkRangesAttributeTypeOk(o.NetworkRanges); ok {
+		toSerialize["NetworkRanges"] = val
+	}
+	if val, ok := getCreateAreaIPv4GetRoutesAttributeTypeOk(o.Routes); ok {
+		toSerialize["Routes"] = val
 	}
-	toSerialize["networkRanges"] = o.NetworkRanges
-	if !IsNil(o.Routes) {
-		toSerialize["routes"] = o.Routes
+	if val, ok := getCreateAreaIPv4GetTransferNetworkAttributeTypeOk(o.TransferNetwork); ok {
+		toSerialize["TransferNetwork"] = val
 	}
-	toSerialize["transferNetwork"] = o.TransferNetwork
-	if !IsNil(o.DefaultPrefixLen) {
-		toSerialize["defaultPrefixLen"] = o.DefaultPrefixLen
+	if val, ok := getCreateAreaIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen); ok {
+		toSerialize["DefaultPrefixLen"] = val
 	}
-	if !IsNil(o.MaxPrefixLen) {
-		toSerialize["maxPrefixLen"] = o.MaxPrefixLen
+	if val, ok := getCreateAreaIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen); ok {
+		toSerialize["MaxPrefixLen"] = val
 	}
-	if !IsNil(o.MinPrefixLen) {
-		toSerialize["minPrefixLen"] = o.MinPrefixLen
+	if val, ok := getCreateAreaIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen); ok {
+		toSerialize["MinPrefixLen"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_backup_payload.go b/services/iaas/model_create_backup_payload.go
index b3b401bce..f6413e8c6 100644
--- a/services/iaas/model_create_backup_payload.go
+++ b/services/iaas/model_create_backup_payload.go
@@ -17,14 +17,75 @@ import (
 // checks if the CreateBackupPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateBackupPayload{}
 
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateBackupPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateBackupPayloadGetLabelsArgType = map[string]interface{}
+type CreateBackupPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateBackupPayloadGetLabelsAttributeTypeOk(arg CreateBackupPayloadGetLabelsAttributeType) (ret CreateBackupPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateBackupPayloadGetLabelsAttributeType(arg *CreateBackupPayloadGetLabelsAttributeType, val CreateBackupPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateBackupPayloadGetNameAttributeType = *string
+
+func getCreateBackupPayloadGetNameAttributeTypeOk(arg CreateBackupPayloadGetNameAttributeType) (ret CreateBackupPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateBackupPayloadGetNameAttributeType(arg *CreateBackupPayloadGetNameAttributeType, val CreateBackupPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateBackupPayloadGetNameArgType = string
+type CreateBackupPayloadGetNameRetType = string
+
+/*
+	types and functions for source
+*/
+
+// isModel
+type CreateBackupPayloadGetSourceAttributeType = *BackupSource
+type CreateBackupPayloadGetSourceArgType = BackupSource
+type CreateBackupPayloadGetSourceRetType = BackupSource
+
+func getCreateBackupPayloadGetSourceAttributeTypeOk(arg CreateBackupPayloadGetSourceAttributeType) (ret CreateBackupPayloadGetSourceRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateBackupPayloadGetSourceAttributeType(arg *CreateBackupPayloadGetSourceAttributeType, val CreateBackupPayloadGetSourceRetType) {
+	*arg = &val
+}
+
 // CreateBackupPayload Object that represents a backup create request body.
 type CreateBackupPayload struct {
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateBackupPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name CreateBackupPayloadGetNameAttributeType `json:"name,omitempty"`
 	// REQUIRED
-	Source *BackupSource `json:"source"`
+	Source CreateBackupPayloadGetSourceAttributeType `json:"source"`
 }
 
 type _CreateBackupPayload CreateBackupPayload
@@ -33,9 +94,9 @@ type _CreateBackupPayload CreateBackupPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateBackupPayload(source *BackupSource) *CreateBackupPayload {
+func NewCreateBackupPayload(source CreateBackupPayloadGetSourceArgType) *CreateBackupPayload {
 	this := CreateBackupPayload{}
-	this.Source = source
+	setCreateBackupPayloadGetSourceAttributeType(&this.Source, source)
 	return &this
 }
 
@@ -48,102 +109,79 @@ func NewCreateBackupPayloadWithDefaults() *CreateBackupPayload {
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateBackupPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateBackupPayload) GetLabels() (res CreateBackupPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateBackupPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateBackupPayload) GetLabelsOk() (ret CreateBackupPayloadGetLabelsRetType, ok bool) {
+	return getCreateBackupPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateBackupPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateBackupPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateBackupPayload) SetLabels(v CreateBackupPayloadGetLabelsRetType) {
+	setCreateBackupPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *CreateBackupPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *CreateBackupPayload) GetName() (res CreateBackupPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateBackupPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateBackupPayload) GetNameOk() (ret CreateBackupPayloadGetNameRetType, ok bool) {
+	return getCreateBackupPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *CreateBackupPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *CreateBackupPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateBackupPayload) SetName(v CreateBackupPayloadGetNameRetType) {
+	setCreateBackupPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetSource returns the Source field value
-func (o *CreateBackupPayload) GetSource() *BackupSource {
-	if o == nil || IsNil(o.Source) {
-		var ret *BackupSource
-		return ret
-	}
-
-	return o.Source
+func (o *CreateBackupPayload) GetSource() (ret CreateBackupPayloadGetSourceRetType) {
+	ret, _ = o.GetSourceOk()
+	return ret
 }
 
 // GetSourceOk returns a tuple with the Source field value
 // and a boolean to check if the value has been set.
-func (o *CreateBackupPayload) GetSourceOk() (*BackupSource, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Source, true
+func (o *CreateBackupPayload) GetSourceOk() (ret CreateBackupPayloadGetSourceRetType, ok bool) {
+	return getCreateBackupPayloadGetSourceAttributeTypeOk(o.Source)
 }
 
 // SetSource sets field value
-func (o *CreateBackupPayload) SetSource(v *BackupSource) {
-	o.Source = v
+func (o *CreateBackupPayload) SetSource(v CreateBackupPayloadGetSourceRetType) {
+	setCreateBackupPayloadGetSourceAttributeType(&o.Source, v)
 }
 
 func (o CreateBackupPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateBackupPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
+	}
+	if val, ok := getCreateBackupPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getCreateBackupPayloadGetSourceAttributeTypeOk(o.Source); ok {
+		toSerialize["Source"] = val
 	}
-	toSerialize["source"] = o.Source
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_create_image_payload.go b/services/iaas/model_create_image_payload.go
index f2eae6970..29b708dce 100644
--- a/services/iaas/model_create_image_payload.go
+++ b/services/iaas/model_create_image_payload.go
@@ -18,37 +18,343 @@ import (
 // checks if the CreateImagePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateImagePayload{}
 
+/*
+	types and functions for checksum
+*/
+
+// isModel
+type CreateImagePayloadGetChecksumAttributeType = *ImageChecksum
+type CreateImagePayloadGetChecksumArgType = ImageChecksum
+type CreateImagePayloadGetChecksumRetType = ImageChecksum
+
+func getCreateImagePayloadGetChecksumAttributeTypeOk(arg CreateImagePayloadGetChecksumAttributeType) (ret CreateImagePayloadGetChecksumRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetChecksumAttributeType(arg *CreateImagePayloadGetChecksumAttributeType, val CreateImagePayloadGetChecksumRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for config
+*/
+
+// isModel
+type CreateImagePayloadGetConfigAttributeType = *ImageConfig
+type CreateImagePayloadGetConfigArgType = ImageConfig
+type CreateImagePayloadGetConfigRetType = ImageConfig
+
+func getCreateImagePayloadGetConfigAttributeTypeOk(arg CreateImagePayloadGetConfigAttributeType) (ret CreateImagePayloadGetConfigRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetConfigAttributeType(arg *CreateImagePayloadGetConfigAttributeType, val CreateImagePayloadGetConfigRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type CreateImagePayloadGetCreatedAtAttributeType = *time.Time
+type CreateImagePayloadGetCreatedAtArgType = time.Time
+type CreateImagePayloadGetCreatedAtRetType = time.Time
+
+func getCreateImagePayloadGetCreatedAtAttributeTypeOk(arg CreateImagePayloadGetCreatedAtAttributeType) (ret CreateImagePayloadGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetCreatedAtAttributeType(arg *CreateImagePayloadGetCreatedAtAttributeType, val CreateImagePayloadGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for diskFormat
+*/
+
+// isNotNullableString
+type CreateImagePayloadGetDiskFormatAttributeType = *string
+
+func getCreateImagePayloadGetDiskFormatAttributeTypeOk(arg CreateImagePayloadGetDiskFormatAttributeType) (ret CreateImagePayloadGetDiskFormatRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetDiskFormatAttributeType(arg *CreateImagePayloadGetDiskFormatAttributeType, val CreateImagePayloadGetDiskFormatRetType) {
+	*arg = &val
+}
+
+type CreateImagePayloadGetDiskFormatArgType = string
+type CreateImagePayloadGetDiskFormatRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateImagePayloadGetIdAttributeType = *string
+
+func getCreateImagePayloadGetIdAttributeTypeOk(arg CreateImagePayloadGetIdAttributeType) (ret CreateImagePayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetIdAttributeType(arg *CreateImagePayloadGetIdAttributeType, val CreateImagePayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateImagePayloadGetIdArgType = string
+type CreateImagePayloadGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateImagePayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateImagePayloadGetLabelsArgType = map[string]interface{}
+type CreateImagePayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateImagePayloadGetLabelsAttributeTypeOk(arg CreateImagePayloadGetLabelsAttributeType) (ret CreateImagePayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetLabelsAttributeType(arg *CreateImagePayloadGetLabelsAttributeType, val CreateImagePayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minDiskSize
+*/
+
+// isLong
+type CreateImagePayloadGetMinDiskSizeAttributeType = *int64
+type CreateImagePayloadGetMinDiskSizeArgType = int64
+type CreateImagePayloadGetMinDiskSizeRetType = int64
+
+func getCreateImagePayloadGetMinDiskSizeAttributeTypeOk(arg CreateImagePayloadGetMinDiskSizeAttributeType) (ret CreateImagePayloadGetMinDiskSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetMinDiskSizeAttributeType(arg *CreateImagePayloadGetMinDiskSizeAttributeType, val CreateImagePayloadGetMinDiskSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minRam
+*/
+
+// isLong
+type CreateImagePayloadGetMinRamAttributeType = *int64
+type CreateImagePayloadGetMinRamArgType = int64
+type CreateImagePayloadGetMinRamRetType = int64
+
+func getCreateImagePayloadGetMinRamAttributeTypeOk(arg CreateImagePayloadGetMinRamAttributeType) (ret CreateImagePayloadGetMinRamRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetMinRamAttributeType(arg *CreateImagePayloadGetMinRamAttributeType, val CreateImagePayloadGetMinRamRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateImagePayloadGetNameAttributeType = *string
+
+func getCreateImagePayloadGetNameAttributeTypeOk(arg CreateImagePayloadGetNameAttributeType) (ret CreateImagePayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetNameAttributeType(arg *CreateImagePayloadGetNameAttributeType, val CreateImagePayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateImagePayloadGetNameArgType = string
+type CreateImagePayloadGetNameRetType = string
+
+/*
+	types and functions for owner
+*/
+
+// isNotNullableString
+type CreateImagePayloadGetOwnerAttributeType = *string
+
+func getCreateImagePayloadGetOwnerAttributeTypeOk(arg CreateImagePayloadGetOwnerAttributeType) (ret CreateImagePayloadGetOwnerRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetOwnerAttributeType(arg *CreateImagePayloadGetOwnerAttributeType, val CreateImagePayloadGetOwnerRetType) {
+	*arg = &val
+}
+
+type CreateImagePayloadGetOwnerArgType = string
+type CreateImagePayloadGetOwnerRetType = string
+
+/*
+	types and functions for protected
+*/
+
+// isBoolean
+type CreateImagePayloadgetProtectedAttributeType = *bool
+type CreateImagePayloadgetProtectedArgType = bool
+type CreateImagePayloadgetProtectedRetType = bool
+
+func getCreateImagePayloadgetProtectedAttributeTypeOk(arg CreateImagePayloadgetProtectedAttributeType) (ret CreateImagePayloadgetProtectedRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadgetProtectedAttributeType(arg *CreateImagePayloadgetProtectedAttributeType, val CreateImagePayloadgetProtectedRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for scope
+*/
+
+// isNotNullableString
+type CreateImagePayloadGetScopeAttributeType = *string
+
+func getCreateImagePayloadGetScopeAttributeTypeOk(arg CreateImagePayloadGetScopeAttributeType) (ret CreateImagePayloadGetScopeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetScopeAttributeType(arg *CreateImagePayloadGetScopeAttributeType, val CreateImagePayloadGetScopeRetType) {
+	*arg = &val
+}
+
+type CreateImagePayloadGetScopeArgType = string
+type CreateImagePayloadGetScopeRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type CreateImagePayloadGetSizeAttributeType = *int64
+type CreateImagePayloadGetSizeArgType = int64
+type CreateImagePayloadGetSizeRetType = int64
+
+func getCreateImagePayloadGetSizeAttributeTypeOk(arg CreateImagePayloadGetSizeAttributeType) (ret CreateImagePayloadGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetSizeAttributeType(arg *CreateImagePayloadGetSizeAttributeType, val CreateImagePayloadGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type CreateImagePayloadGetStatusAttributeType = *string
+
+func getCreateImagePayloadGetStatusAttributeTypeOk(arg CreateImagePayloadGetStatusAttributeType) (ret CreateImagePayloadGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetStatusAttributeType(arg *CreateImagePayloadGetStatusAttributeType, val CreateImagePayloadGetStatusRetType) {
+	*arg = &val
+}
+
+type CreateImagePayloadGetStatusArgType = string
+type CreateImagePayloadGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type CreateImagePayloadGetUpdatedAtAttributeType = *time.Time
+type CreateImagePayloadGetUpdatedAtArgType = time.Time
+type CreateImagePayloadGetUpdatedAtRetType = time.Time
+
+func getCreateImagePayloadGetUpdatedAtAttributeTypeOk(arg CreateImagePayloadGetUpdatedAtAttributeType) (ret CreateImagePayloadGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateImagePayloadGetUpdatedAtAttributeType(arg *CreateImagePayloadGetUpdatedAtAttributeType, val CreateImagePayloadGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // CreateImagePayload Object that represents an Image and its parameters. Used for Creating and returning (get/list).
 type CreateImagePayload struct {
-	Checksum *ImageChecksum `json:"checksum,omitempty"`
-	Config   *ImageConfig   `json:"config,omitempty"`
+	Checksum CreateImagePayloadGetChecksumAttributeType `json:"checksum,omitempty"`
+	Config   CreateImagePayloadGetConfigAttributeType   `json:"config,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt CreateImagePayloadGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Object that represents a disk format. Possible values: `raw`, `qcow2`, `iso`.
 	// REQUIRED
-	DiskFormat *string `json:"diskFormat"`
+	DiskFormat CreateImagePayloadGetDiskFormatAttributeType `json:"diskFormat"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateImagePayloadGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateImagePayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// Size in Gigabyte.
-	MinDiskSize *int64 `json:"minDiskSize,omitempty"`
+	MinDiskSize CreateImagePayloadGetMinDiskSizeAttributeType `json:"minDiskSize,omitempty"`
 	// Size in Megabyte.
-	MinRam *int64 `json:"minRam,omitempty"`
+	MinRam CreateImagePayloadGetMinRamAttributeType `json:"minRam,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name CreateImagePayloadGetNameAttributeType `json:"name"`
 	// Universally Unique Identifier (UUID).
-	Owner     *string `json:"owner,omitempty"`
-	Protected *bool   `json:"protected,omitempty"`
+	Owner     CreateImagePayloadGetOwnerAttributeType     `json:"owner,omitempty"`
+	Protected CreateImagePayloadgetProtectedAttributeType `json:"protected,omitempty"`
 	// Scope of an Image. Possible values: `public`, `local`, `projects`, `organization`.
-	Scope *string `json:"scope,omitempty"`
+	Scope CreateImagePayloadGetScopeAttributeType `json:"scope,omitempty"`
 	// Size in bytes.
-	Size *int64 `json:"size,omitempty"`
+	Size CreateImagePayloadGetSizeAttributeType `json:"size,omitempty"`
 	// The status of an image object. Possible values: `AVAILABLE`, `CREATING`, `DEACTIVATED`, `DELETED`, `DELETING`, `ERROR`.
-	Status *string `json:"status,omitempty"`
+	Status CreateImagePayloadGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt CreateImagePayloadGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _CreateImagePayload CreateImagePayload
@@ -57,10 +363,10 @@ type _CreateImagePayload CreateImagePayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateImagePayload(diskFormat *string, name *string) *CreateImagePayload {
+func NewCreateImagePayload(diskFormat CreateImagePayloadGetDiskFormatArgType, name CreateImagePayloadGetNameArgType) *CreateImagePayload {
 	this := CreateImagePayload{}
-	this.DiskFormat = diskFormat
-	this.Name = name
+	setCreateImagePayloadGetDiskFormatAttributeType(&this.DiskFormat, diskFormat)
+	setCreateImagePayloadGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -73,511 +379,384 @@ func NewCreateImagePayloadWithDefaults() *CreateImagePayload {
 }
 
 // GetChecksum returns the Checksum field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetChecksum() *ImageChecksum {
-	if o == nil || IsNil(o.Checksum) {
-		var ret *ImageChecksum
-		return ret
-	}
-	return o.Checksum
+func (o *CreateImagePayload) GetChecksum() (res CreateImagePayloadGetChecksumRetType) {
+	res, _ = o.GetChecksumOk()
+	return
 }
 
 // GetChecksumOk returns a tuple with the Checksum field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetChecksumOk() (*ImageChecksum, bool) {
-	if o == nil || IsNil(o.Checksum) {
-		return nil, false
-	}
-	return o.Checksum, true
+func (o *CreateImagePayload) GetChecksumOk() (ret CreateImagePayloadGetChecksumRetType, ok bool) {
+	return getCreateImagePayloadGetChecksumAttributeTypeOk(o.Checksum)
 }
 
 // HasChecksum returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasChecksum() bool {
-	if o != nil && !IsNil(o.Checksum) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetChecksumOk()
+	return ok
 }
 
 // SetChecksum gets a reference to the given ImageChecksum and assigns it to the Checksum field.
-func (o *CreateImagePayload) SetChecksum(v *ImageChecksum) {
-	o.Checksum = v
+func (o *CreateImagePayload) SetChecksum(v CreateImagePayloadGetChecksumRetType) {
+	setCreateImagePayloadGetChecksumAttributeType(&o.Checksum, v)
 }
 
 // GetConfig returns the Config field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetConfig() *ImageConfig {
-	if o == nil || IsNil(o.Config) {
-		var ret *ImageConfig
-		return ret
-	}
-	return o.Config
+func (o *CreateImagePayload) GetConfig() (res CreateImagePayloadGetConfigRetType) {
+	res, _ = o.GetConfigOk()
+	return
 }
 
 // GetConfigOk returns a tuple with the Config field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetConfigOk() (*ImageConfig, bool) {
-	if o == nil || IsNil(o.Config) {
-		return nil, false
-	}
-	return o.Config, true
+func (o *CreateImagePayload) GetConfigOk() (ret CreateImagePayloadGetConfigRetType, ok bool) {
+	return getCreateImagePayloadGetConfigAttributeTypeOk(o.Config)
 }
 
 // HasConfig returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasConfig() bool {
-	if o != nil && !IsNil(o.Config) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetConfigOk()
+	return ok
 }
 
 // SetConfig gets a reference to the given ImageConfig and assigns it to the Config field.
-func (o *CreateImagePayload) SetConfig(v *ImageConfig) {
-	o.Config = v
+func (o *CreateImagePayload) SetConfig(v CreateImagePayloadGetConfigRetType) {
+	setCreateImagePayloadGetConfigAttributeType(&o.Config, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *CreateImagePayload) GetCreatedAt() (res CreateImagePayloadGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *CreateImagePayload) GetCreatedAtOk() (ret CreateImagePayloadGetCreatedAtRetType, ok bool) {
+	return getCreateImagePayloadGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *CreateImagePayload) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *CreateImagePayload) SetCreatedAt(v CreateImagePayloadGetCreatedAtRetType) {
+	setCreateImagePayloadGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetDiskFormat returns the DiskFormat field value
-func (o *CreateImagePayload) GetDiskFormat() *string {
-	if o == nil || IsNil(o.DiskFormat) {
-		var ret *string
-		return ret
-	}
-
-	return o.DiskFormat
+func (o *CreateImagePayload) GetDiskFormat() (ret CreateImagePayloadGetDiskFormatRetType) {
+	ret, _ = o.GetDiskFormatOk()
+	return ret
 }
 
 // GetDiskFormatOk returns a tuple with the DiskFormat field value
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetDiskFormatOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.DiskFormat, true
+func (o *CreateImagePayload) GetDiskFormatOk() (ret CreateImagePayloadGetDiskFormatRetType, ok bool) {
+	return getCreateImagePayloadGetDiskFormatAttributeTypeOk(o.DiskFormat)
 }
 
 // SetDiskFormat sets field value
-func (o *CreateImagePayload) SetDiskFormat(v *string) {
-	o.DiskFormat = v
+func (o *CreateImagePayload) SetDiskFormat(v CreateImagePayloadGetDiskFormatRetType) {
+	setCreateImagePayloadGetDiskFormatAttributeType(&o.DiskFormat, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateImagePayload) GetId() (res CreateImagePayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateImagePayload) GetIdOk() (ret CreateImagePayloadGetIdRetType, ok bool) {
+	return getCreateImagePayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateImagePayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateImagePayload) SetId(v CreateImagePayloadGetIdRetType) {
+	setCreateImagePayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateImagePayload) GetLabels() (res CreateImagePayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateImagePayload) GetLabelsOk() (ret CreateImagePayloadGetLabelsRetType, ok bool) {
+	return getCreateImagePayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateImagePayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateImagePayload) SetLabels(v CreateImagePayloadGetLabelsRetType) {
+	setCreateImagePayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetMinDiskSize returns the MinDiskSize field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetMinDiskSize() *int64 {
-	if o == nil || IsNil(o.MinDiskSize) {
-		var ret *int64
-		return ret
-	}
-	return o.MinDiskSize
+func (o *CreateImagePayload) GetMinDiskSize() (res CreateImagePayloadGetMinDiskSizeRetType) {
+	res, _ = o.GetMinDiskSizeOk()
+	return
 }
 
 // GetMinDiskSizeOk returns a tuple with the MinDiskSize field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetMinDiskSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinDiskSize) {
-		return nil, false
-	}
-	return o.MinDiskSize, true
+func (o *CreateImagePayload) GetMinDiskSizeOk() (ret CreateImagePayloadGetMinDiskSizeRetType, ok bool) {
+	return getCreateImagePayloadGetMinDiskSizeAttributeTypeOk(o.MinDiskSize)
 }
 
 // HasMinDiskSize returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasMinDiskSize() bool {
-	if o != nil && !IsNil(o.MinDiskSize) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinDiskSizeOk()
+	return ok
 }
 
 // SetMinDiskSize gets a reference to the given int64 and assigns it to the MinDiskSize field.
-func (o *CreateImagePayload) SetMinDiskSize(v *int64) {
-	o.MinDiskSize = v
+func (o *CreateImagePayload) SetMinDiskSize(v CreateImagePayloadGetMinDiskSizeRetType) {
+	setCreateImagePayloadGetMinDiskSizeAttributeType(&o.MinDiskSize, v)
 }
 
 // GetMinRam returns the MinRam field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetMinRam() *int64 {
-	if o == nil || IsNil(o.MinRam) {
-		var ret *int64
-		return ret
-	}
-	return o.MinRam
+func (o *CreateImagePayload) GetMinRam() (res CreateImagePayloadGetMinRamRetType) {
+	res, _ = o.GetMinRamOk()
+	return
 }
 
 // GetMinRamOk returns a tuple with the MinRam field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetMinRamOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinRam) {
-		return nil, false
-	}
-	return o.MinRam, true
+func (o *CreateImagePayload) GetMinRamOk() (ret CreateImagePayloadGetMinRamRetType, ok bool) {
+	return getCreateImagePayloadGetMinRamAttributeTypeOk(o.MinRam)
 }
 
 // HasMinRam returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasMinRam() bool {
-	if o != nil && !IsNil(o.MinRam) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinRamOk()
+	return ok
 }
 
 // SetMinRam gets a reference to the given int64 and assigns it to the MinRam field.
-func (o *CreateImagePayload) SetMinRam(v *int64) {
-	o.MinRam = v
+func (o *CreateImagePayload) SetMinRam(v CreateImagePayloadGetMinRamRetType) {
+	setCreateImagePayloadGetMinRamAttributeType(&o.MinRam, v)
 }
 
 // GetName returns the Name field value
-func (o *CreateImagePayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *CreateImagePayload) GetName() (ret CreateImagePayloadGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateImagePayload) GetNameOk() (ret CreateImagePayloadGetNameRetType, ok bool) {
+	return getCreateImagePayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *CreateImagePayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateImagePayload) SetName(v CreateImagePayloadGetNameRetType) {
+	setCreateImagePayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetOwner returns the Owner field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetOwner() *string {
-	if o == nil || IsNil(o.Owner) {
-		var ret *string
-		return ret
-	}
-	return o.Owner
+func (o *CreateImagePayload) GetOwner() (res CreateImagePayloadGetOwnerRetType) {
+	res, _ = o.GetOwnerOk()
+	return
 }
 
 // GetOwnerOk returns a tuple with the Owner field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetOwnerOk() (*string, bool) {
-	if o == nil || IsNil(o.Owner) {
-		return nil, false
-	}
-	return o.Owner, true
+func (o *CreateImagePayload) GetOwnerOk() (ret CreateImagePayloadGetOwnerRetType, ok bool) {
+	return getCreateImagePayloadGetOwnerAttributeTypeOk(o.Owner)
 }
 
 // HasOwner returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasOwner() bool {
-	if o != nil && !IsNil(o.Owner) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetOwnerOk()
+	return ok
 }
 
 // SetOwner gets a reference to the given string and assigns it to the Owner field.
-func (o *CreateImagePayload) SetOwner(v *string) {
-	o.Owner = v
+func (o *CreateImagePayload) SetOwner(v CreateImagePayloadGetOwnerRetType) {
+	setCreateImagePayloadGetOwnerAttributeType(&o.Owner, v)
 }
 
 // GetProtected returns the Protected field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetProtected() *bool {
-	if o == nil || IsNil(o.Protected) {
-		var ret *bool
-		return ret
-	}
-	return o.Protected
+func (o *CreateImagePayload) GetProtected() (res CreateImagePayloadgetProtectedRetType) {
+	res, _ = o.GetProtectedOk()
+	return
 }
 
 // GetProtectedOk returns a tuple with the Protected field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetProtectedOk() (*bool, bool) {
-	if o == nil || IsNil(o.Protected) {
-		return nil, false
-	}
-	return o.Protected, true
+func (o *CreateImagePayload) GetProtectedOk() (ret CreateImagePayloadgetProtectedRetType, ok bool) {
+	return getCreateImagePayloadgetProtectedAttributeTypeOk(o.Protected)
 }
 
 // HasProtected returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasProtected() bool {
-	if o != nil && !IsNil(o.Protected) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProtectedOk()
+	return ok
 }
 
 // SetProtected gets a reference to the given bool and assigns it to the Protected field.
-func (o *CreateImagePayload) SetProtected(v *bool) {
-	o.Protected = v
+func (o *CreateImagePayload) SetProtected(v CreateImagePayloadgetProtectedRetType) {
+	setCreateImagePayloadgetProtectedAttributeType(&o.Protected, v)
 }
 
 // GetScope returns the Scope field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetScope() *string {
-	if o == nil || IsNil(o.Scope) {
-		var ret *string
-		return ret
-	}
-	return o.Scope
+func (o *CreateImagePayload) GetScope() (res CreateImagePayloadGetScopeRetType) {
+	res, _ = o.GetScopeOk()
+	return
 }
 
 // GetScopeOk returns a tuple with the Scope field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetScopeOk() (*string, bool) {
-	if o == nil || IsNil(o.Scope) {
-		return nil, false
-	}
-	return o.Scope, true
+func (o *CreateImagePayload) GetScopeOk() (ret CreateImagePayloadGetScopeRetType, ok bool) {
+	return getCreateImagePayloadGetScopeAttributeTypeOk(o.Scope)
 }
 
 // HasScope returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasScope() bool {
-	if o != nil && !IsNil(o.Scope) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetScopeOk()
+	return ok
 }
 
 // SetScope gets a reference to the given string and assigns it to the Scope field.
-func (o *CreateImagePayload) SetScope(v *string) {
-	o.Scope = v
+func (o *CreateImagePayload) SetScope(v CreateImagePayloadGetScopeRetType) {
+	setCreateImagePayloadGetScopeAttributeType(&o.Scope, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *CreateImagePayload) GetSize() (res CreateImagePayloadGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *CreateImagePayload) GetSizeOk() (ret CreateImagePayloadGetSizeRetType, ok bool) {
+	return getCreateImagePayloadGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *CreateImagePayload) SetSize(v *int64) {
-	o.Size = v
+func (o *CreateImagePayload) SetSize(v CreateImagePayloadGetSizeRetType) {
+	setCreateImagePayloadGetSizeAttributeType(&o.Size, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *CreateImagePayload) GetStatus() (res CreateImagePayloadGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *CreateImagePayload) GetStatusOk() (ret CreateImagePayloadGetStatusRetType, ok bool) {
+	return getCreateImagePayloadGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *CreateImagePayload) SetStatus(v *string) {
-	o.Status = v
+func (o *CreateImagePayload) SetStatus(v CreateImagePayloadGetStatusRetType) {
+	setCreateImagePayloadGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *CreateImagePayload) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *CreateImagePayload) GetUpdatedAt() (res CreateImagePayloadGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateImagePayload) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *CreateImagePayload) GetUpdatedAtOk() (ret CreateImagePayloadGetUpdatedAtRetType, ok bool) {
+	return getCreateImagePayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *CreateImagePayload) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *CreateImagePayload) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *CreateImagePayload) SetUpdatedAt(v CreateImagePayloadGetUpdatedAtRetType) {
+	setCreateImagePayloadGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o CreateImagePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Checksum) {
-		toSerialize["checksum"] = o.Checksum
+	if val, ok := getCreateImagePayloadGetChecksumAttributeTypeOk(o.Checksum); ok {
+		toSerialize["Checksum"] = val
+	}
+	if val, ok := getCreateImagePayloadGetConfigAttributeTypeOk(o.Config); ok {
+		toSerialize["Config"] = val
+	}
+	if val, ok := getCreateImagePayloadGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.Config) {
-		toSerialize["config"] = o.Config
+	if val, ok := getCreateImagePayloadGetDiskFormatAttributeTypeOk(o.DiskFormat); ok {
+		toSerialize["DiskFormat"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getCreateImagePayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	toSerialize["diskFormat"] = o.DiskFormat
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateImagePayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateImagePayloadGetMinDiskSizeAttributeTypeOk(o.MinDiskSize); ok {
+		toSerialize["MinDiskSize"] = val
 	}
-	if !IsNil(o.MinDiskSize) {
-		toSerialize["minDiskSize"] = o.MinDiskSize
+	if val, ok := getCreateImagePayloadGetMinRamAttributeTypeOk(o.MinRam); ok {
+		toSerialize["MinRam"] = val
 	}
-	if !IsNil(o.MinRam) {
-		toSerialize["minRam"] = o.MinRam
+	if val, ok := getCreateImagePayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Owner) {
-		toSerialize["owner"] = o.Owner
+	if val, ok := getCreateImagePayloadGetOwnerAttributeTypeOk(o.Owner); ok {
+		toSerialize["Owner"] = val
 	}
-	if !IsNil(o.Protected) {
-		toSerialize["protected"] = o.Protected
+	if val, ok := getCreateImagePayloadgetProtectedAttributeTypeOk(o.Protected); ok {
+		toSerialize["Protected"] = val
 	}
-	if !IsNil(o.Scope) {
-		toSerialize["scope"] = o.Scope
+	if val, ok := getCreateImagePayloadGetScopeAttributeTypeOk(o.Scope); ok {
+		toSerialize["Scope"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getCreateImagePayloadGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getCreateImagePayloadGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getCreateImagePayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_key_pair_payload.go b/services/iaas/model_create_key_pair_payload.go
index 48c27576f..a151d3124 100644
--- a/services/iaas/model_create_key_pair_payload.go
+++ b/services/iaas/model_create_key_pair_payload.go
@@ -18,21 +18,144 @@ import (
 // checks if the CreateKeyPairPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateKeyPairPayload{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type CreateKeyPairPayloadGetCreatedAtAttributeType = *time.Time
+type CreateKeyPairPayloadGetCreatedAtArgType = time.Time
+type CreateKeyPairPayloadGetCreatedAtRetType = time.Time
+
+func getCreateKeyPairPayloadGetCreatedAtAttributeTypeOk(arg CreateKeyPairPayloadGetCreatedAtAttributeType) (ret CreateKeyPairPayloadGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateKeyPairPayloadGetCreatedAtAttributeType(arg *CreateKeyPairPayloadGetCreatedAtAttributeType, val CreateKeyPairPayloadGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for fingerprint
+*/
+
+// isNotNullableString
+type CreateKeyPairPayloadGetFingerprintAttributeType = *string
+
+func getCreateKeyPairPayloadGetFingerprintAttributeTypeOk(arg CreateKeyPairPayloadGetFingerprintAttributeType) (ret CreateKeyPairPayloadGetFingerprintRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateKeyPairPayloadGetFingerprintAttributeType(arg *CreateKeyPairPayloadGetFingerprintAttributeType, val CreateKeyPairPayloadGetFingerprintRetType) {
+	*arg = &val
+}
+
+type CreateKeyPairPayloadGetFingerprintArgType = string
+type CreateKeyPairPayloadGetFingerprintRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateKeyPairPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateKeyPairPayloadGetLabelsArgType = map[string]interface{}
+type CreateKeyPairPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateKeyPairPayloadGetLabelsAttributeTypeOk(arg CreateKeyPairPayloadGetLabelsAttributeType) (ret CreateKeyPairPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateKeyPairPayloadGetLabelsAttributeType(arg *CreateKeyPairPayloadGetLabelsAttributeType, val CreateKeyPairPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateKeyPairPayloadGetNameAttributeType = *string
+
+func getCreateKeyPairPayloadGetNameAttributeTypeOk(arg CreateKeyPairPayloadGetNameAttributeType) (ret CreateKeyPairPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateKeyPairPayloadGetNameAttributeType(arg *CreateKeyPairPayloadGetNameAttributeType, val CreateKeyPairPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateKeyPairPayloadGetNameArgType = string
+type CreateKeyPairPayloadGetNameRetType = string
+
+/*
+	types and functions for publicKey
+*/
+
+// isNotNullableString
+type CreateKeyPairPayloadGetPublicKeyAttributeType = *string
+
+func getCreateKeyPairPayloadGetPublicKeyAttributeTypeOk(arg CreateKeyPairPayloadGetPublicKeyAttributeType) (ret CreateKeyPairPayloadGetPublicKeyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateKeyPairPayloadGetPublicKeyAttributeType(arg *CreateKeyPairPayloadGetPublicKeyAttributeType, val CreateKeyPairPayloadGetPublicKeyRetType) {
+	*arg = &val
+}
+
+type CreateKeyPairPayloadGetPublicKeyArgType = string
+type CreateKeyPairPayloadGetPublicKeyRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type CreateKeyPairPayloadGetUpdatedAtAttributeType = *time.Time
+type CreateKeyPairPayloadGetUpdatedAtArgType = time.Time
+type CreateKeyPairPayloadGetUpdatedAtRetType = time.Time
+
+func getCreateKeyPairPayloadGetUpdatedAtAttributeTypeOk(arg CreateKeyPairPayloadGetUpdatedAtAttributeType) (ret CreateKeyPairPayloadGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateKeyPairPayloadGetUpdatedAtAttributeType(arg *CreateKeyPairPayloadGetUpdatedAtAttributeType, val CreateKeyPairPayloadGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // CreateKeyPairPayload Object that represents the public key of an SSH keypair and its name.
 type CreateKeyPairPayload struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt CreateKeyPairPayloadGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Object that represents an SSH keypair MD5 fingerprint.
-	Fingerprint *string `json:"fingerprint,omitempty"`
+	Fingerprint CreateKeyPairPayloadGetFingerprintAttributeType `json:"fingerprint,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateKeyPairPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name of an SSH keypair. Allowed characters are letters [a-zA-Z], digits [0-9] and the following special characters: [@._-].
-	Name *string `json:"name,omitempty"`
+	Name CreateKeyPairPayloadGetNameAttributeType `json:"name,omitempty"`
 	// Object that represents a public SSH key.
 	// REQUIRED
-	PublicKey *string `json:"publicKey"`
+	PublicKey CreateKeyPairPayloadGetPublicKeyAttributeType `json:"publicKey"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt CreateKeyPairPayloadGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _CreateKeyPairPayload CreateKeyPairPayload
@@ -41,9 +164,9 @@ type _CreateKeyPairPayload CreateKeyPairPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateKeyPairPayload(publicKey *string) *CreateKeyPairPayload {
+func NewCreateKeyPairPayload(publicKey CreateKeyPairPayloadGetPublicKeyArgType) *CreateKeyPairPayload {
 	this := CreateKeyPairPayload{}
-	this.PublicKey = publicKey
+	setCreateKeyPairPayloadGetPublicKeyAttributeType(&this.PublicKey, publicKey)
 	return &this
 }
 
@@ -56,206 +179,156 @@ func NewCreateKeyPairPayloadWithDefaults() *CreateKeyPairPayload {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *CreateKeyPairPayload) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *CreateKeyPairPayload) GetCreatedAt() (res CreateKeyPairPayloadGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateKeyPairPayload) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *CreateKeyPairPayload) GetCreatedAtOk() (ret CreateKeyPairPayloadGetCreatedAtRetType, ok bool) {
+	return getCreateKeyPairPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *CreateKeyPairPayload) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *CreateKeyPairPayload) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *CreateKeyPairPayload) SetCreatedAt(v CreateKeyPairPayloadGetCreatedAtRetType) {
+	setCreateKeyPairPayloadGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetFingerprint returns the Fingerprint field value if set, zero value otherwise.
-func (o *CreateKeyPairPayload) GetFingerprint() *string {
-	if o == nil || IsNil(o.Fingerprint) {
-		var ret *string
-		return ret
-	}
-	return o.Fingerprint
+func (o *CreateKeyPairPayload) GetFingerprint() (res CreateKeyPairPayloadGetFingerprintRetType) {
+	res, _ = o.GetFingerprintOk()
+	return
 }
 
 // GetFingerprintOk returns a tuple with the Fingerprint field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateKeyPairPayload) GetFingerprintOk() (*string, bool) {
-	if o == nil || IsNil(o.Fingerprint) {
-		return nil, false
-	}
-	return o.Fingerprint, true
+func (o *CreateKeyPairPayload) GetFingerprintOk() (ret CreateKeyPairPayloadGetFingerprintRetType, ok bool) {
+	return getCreateKeyPairPayloadGetFingerprintAttributeTypeOk(o.Fingerprint)
 }
 
 // HasFingerprint returns a boolean if a field has been set.
 func (o *CreateKeyPairPayload) HasFingerprint() bool {
-	if o != nil && !IsNil(o.Fingerprint) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetFingerprintOk()
+	return ok
 }
 
 // SetFingerprint gets a reference to the given string and assigns it to the Fingerprint field.
-func (o *CreateKeyPairPayload) SetFingerprint(v *string) {
-	o.Fingerprint = v
+func (o *CreateKeyPairPayload) SetFingerprint(v CreateKeyPairPayloadGetFingerprintRetType) {
+	setCreateKeyPairPayloadGetFingerprintAttributeType(&o.Fingerprint, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateKeyPairPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateKeyPairPayload) GetLabels() (res CreateKeyPairPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateKeyPairPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateKeyPairPayload) GetLabelsOk() (ret CreateKeyPairPayloadGetLabelsRetType, ok bool) {
+	return getCreateKeyPairPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateKeyPairPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateKeyPairPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateKeyPairPayload) SetLabels(v CreateKeyPairPayloadGetLabelsRetType) {
+	setCreateKeyPairPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *CreateKeyPairPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *CreateKeyPairPayload) GetName() (res CreateKeyPairPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateKeyPairPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateKeyPairPayload) GetNameOk() (ret CreateKeyPairPayloadGetNameRetType, ok bool) {
+	return getCreateKeyPairPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *CreateKeyPairPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *CreateKeyPairPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateKeyPairPayload) SetName(v CreateKeyPairPayloadGetNameRetType) {
+	setCreateKeyPairPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetPublicKey returns the PublicKey field value
-func (o *CreateKeyPairPayload) GetPublicKey() *string {
-	if o == nil || IsNil(o.PublicKey) {
-		var ret *string
-		return ret
-	}
-
-	return o.PublicKey
+func (o *CreateKeyPairPayload) GetPublicKey() (ret CreateKeyPairPayloadGetPublicKeyRetType) {
+	ret, _ = o.GetPublicKeyOk()
+	return ret
 }
 
 // GetPublicKeyOk returns a tuple with the PublicKey field value
 // and a boolean to check if the value has been set.
-func (o *CreateKeyPairPayload) GetPublicKeyOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.PublicKey, true
+func (o *CreateKeyPairPayload) GetPublicKeyOk() (ret CreateKeyPairPayloadGetPublicKeyRetType, ok bool) {
+	return getCreateKeyPairPayloadGetPublicKeyAttributeTypeOk(o.PublicKey)
 }
 
 // SetPublicKey sets field value
-func (o *CreateKeyPairPayload) SetPublicKey(v *string) {
-	o.PublicKey = v
+func (o *CreateKeyPairPayload) SetPublicKey(v CreateKeyPairPayloadGetPublicKeyRetType) {
+	setCreateKeyPairPayloadGetPublicKeyAttributeType(&o.PublicKey, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *CreateKeyPairPayload) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *CreateKeyPairPayload) GetUpdatedAt() (res CreateKeyPairPayloadGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateKeyPairPayload) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *CreateKeyPairPayload) GetUpdatedAtOk() (ret CreateKeyPairPayloadGetUpdatedAtRetType, ok bool) {
+	return getCreateKeyPairPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *CreateKeyPairPayload) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *CreateKeyPairPayload) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *CreateKeyPairPayload) SetUpdatedAt(v CreateKeyPairPayloadGetUpdatedAtRetType) {
+	setCreateKeyPairPayloadGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o CreateKeyPairPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getCreateKeyPairPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getCreateKeyPairPayloadGetFingerprintAttributeTypeOk(o.Fingerprint); ok {
+		toSerialize["Fingerprint"] = val
 	}
-	if !IsNil(o.Fingerprint) {
-		toSerialize["fingerprint"] = o.Fingerprint
+	if val, ok := getCreateKeyPairPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateKeyPairPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getCreateKeyPairPayloadGetPublicKeyAttributeTypeOk(o.PublicKey); ok {
+		toSerialize["PublicKey"] = val
 	}
-	toSerialize["publicKey"] = o.PublicKey
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getCreateKeyPairPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_network_address_family.go b/services/iaas/model_create_network_address_family.go
index e142511df..4d16f5e85 100644
--- a/services/iaas/model_create_network_address_family.go
+++ b/services/iaas/model_create_network_address_family.go
@@ -17,10 +17,50 @@ import (
 // checks if the CreateNetworkAddressFamily type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNetworkAddressFamily{}
 
+/*
+	types and functions for ipv4
+*/
+
+// isModel
+type CreateNetworkAddressFamilyGetIpv4AttributeType = *CreateNetworkIPv4Body
+type CreateNetworkAddressFamilyGetIpv4ArgType = CreateNetworkIPv4Body
+type CreateNetworkAddressFamilyGetIpv4RetType = CreateNetworkIPv4Body
+
+func getCreateNetworkAddressFamilyGetIpv4AttributeTypeOk(arg CreateNetworkAddressFamilyGetIpv4AttributeType) (ret CreateNetworkAddressFamilyGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkAddressFamilyGetIpv4AttributeType(arg *CreateNetworkAddressFamilyGetIpv4AttributeType, val CreateNetworkAddressFamilyGetIpv4RetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for ipv6
+*/
+
+// isModel
+type CreateNetworkAddressFamilyGetIpv6AttributeType = *CreateNetworkIPv6Body
+type CreateNetworkAddressFamilyGetIpv6ArgType = CreateNetworkIPv6Body
+type CreateNetworkAddressFamilyGetIpv6RetType = CreateNetworkIPv6Body
+
+func getCreateNetworkAddressFamilyGetIpv6AttributeTypeOk(arg CreateNetworkAddressFamilyGetIpv6AttributeType) (ret CreateNetworkAddressFamilyGetIpv6RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkAddressFamilyGetIpv6AttributeType(arg *CreateNetworkAddressFamilyGetIpv6AttributeType, val CreateNetworkAddressFamilyGetIpv6RetType) {
+	*arg = &val
+}
+
 // CreateNetworkAddressFamily The addressFamily object for a network create request.
 type CreateNetworkAddressFamily struct {
-	Ipv4 *CreateNetworkIPv4Body `json:"ipv4,omitempty"`
-	Ipv6 *CreateNetworkIPv6Body `json:"ipv6,omitempty"`
+	Ipv4 CreateNetworkAddressFamilyGetIpv4AttributeType `json:"ipv4,omitempty"`
+	Ipv6 CreateNetworkAddressFamilyGetIpv6AttributeType `json:"ipv6,omitempty"`
 }
 
 // NewCreateNetworkAddressFamily instantiates a new CreateNetworkAddressFamily object
@@ -41,76 +81,58 @@ func NewCreateNetworkAddressFamilyWithDefaults() *CreateNetworkAddressFamily {
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *CreateNetworkAddressFamily) GetIpv4() *CreateNetworkIPv4Body {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *CreateNetworkIPv4Body
-		return ret
-	}
-	return o.Ipv4
+func (o *CreateNetworkAddressFamily) GetIpv4() (res CreateNetworkAddressFamilyGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkAddressFamily) GetIpv4Ok() (*CreateNetworkIPv4Body, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *CreateNetworkAddressFamily) GetIpv4Ok() (ret CreateNetworkAddressFamilyGetIpv4RetType, ok bool) {
+	return getCreateNetworkAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *CreateNetworkAddressFamily) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given CreateNetworkIPv4Body and assigns it to the Ipv4 field.
-func (o *CreateNetworkAddressFamily) SetIpv4(v *CreateNetworkIPv4Body) {
-	o.Ipv4 = v
+func (o *CreateNetworkAddressFamily) SetIpv4(v CreateNetworkAddressFamilyGetIpv4RetType) {
+	setCreateNetworkAddressFamilyGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 // GetIpv6 returns the Ipv6 field value if set, zero value otherwise.
-func (o *CreateNetworkAddressFamily) GetIpv6() *CreateNetworkIPv6Body {
-	if o == nil || IsNil(o.Ipv6) {
-		var ret *CreateNetworkIPv6Body
-		return ret
-	}
-	return o.Ipv6
+func (o *CreateNetworkAddressFamily) GetIpv6() (res CreateNetworkAddressFamilyGetIpv6RetType) {
+	res, _ = o.GetIpv6Ok()
+	return
 }
 
 // GetIpv6Ok returns a tuple with the Ipv6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkAddressFamily) GetIpv6Ok() (*CreateNetworkIPv6Body, bool) {
-	if o == nil || IsNil(o.Ipv6) {
-		return nil, false
-	}
-	return o.Ipv6, true
+func (o *CreateNetworkAddressFamily) GetIpv6Ok() (ret CreateNetworkAddressFamilyGetIpv6RetType, ok bool) {
+	return getCreateNetworkAddressFamilyGetIpv6AttributeTypeOk(o.Ipv6)
 }
 
 // HasIpv6 returns a boolean if a field has been set.
 func (o *CreateNetworkAddressFamily) HasIpv6() bool {
-	if o != nil && !IsNil(o.Ipv6) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv6Ok()
+	return ok
 }
 
 // SetIpv6 gets a reference to the given CreateNetworkIPv6Body and assigns it to the Ipv6 field.
-func (o *CreateNetworkAddressFamily) SetIpv6(v *CreateNetworkIPv6Body) {
-	o.Ipv6 = v
+func (o *CreateNetworkAddressFamily) SetIpv6(v CreateNetworkAddressFamilyGetIpv6RetType) {
+	setCreateNetworkAddressFamilyGetIpv6AttributeType(&o.Ipv6, v)
 }
 
 func (o CreateNetworkAddressFamily) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getCreateNetworkAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
-	if !IsNil(o.Ipv6) {
-		toSerialize["ipv6"] = o.Ipv6
+	if val, ok := getCreateNetworkAddressFamilyGetIpv6AttributeTypeOk(o.Ipv6); ok {
+		toSerialize["Ipv6"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_network_area_payload.go b/services/iaas/model_create_network_area_payload.go
index bcf2d0cd4..8ae37e597 100644
--- a/services/iaas/model_create_network_area_payload.go
+++ b/services/iaas/model_create_network_area_payload.go
@@ -17,15 +17,76 @@ import (
 // checks if the CreateNetworkAreaPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNetworkAreaPayload{}
 
+/*
+	types and functions for addressFamily
+*/
+
+// isModel
+type CreateNetworkAreaPayloadGetAddressFamilyAttributeType = *CreateAreaAddressFamily
+type CreateNetworkAreaPayloadGetAddressFamilyArgType = CreateAreaAddressFamily
+type CreateNetworkAreaPayloadGetAddressFamilyRetType = CreateAreaAddressFamily
+
+func getCreateNetworkAreaPayloadGetAddressFamilyAttributeTypeOk(arg CreateNetworkAreaPayloadGetAddressFamilyAttributeType) (ret CreateNetworkAreaPayloadGetAddressFamilyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkAreaPayloadGetAddressFamilyAttributeType(arg *CreateNetworkAreaPayloadGetAddressFamilyAttributeType, val CreateNetworkAreaPayloadGetAddressFamilyRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateNetworkAreaPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateNetworkAreaPayloadGetLabelsArgType = map[string]interface{}
+type CreateNetworkAreaPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateNetworkAreaPayloadGetLabelsAttributeTypeOk(arg CreateNetworkAreaPayloadGetLabelsAttributeType) (ret CreateNetworkAreaPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkAreaPayloadGetLabelsAttributeType(arg *CreateNetworkAreaPayloadGetLabelsAttributeType, val CreateNetworkAreaPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateNetworkAreaPayloadGetNameAttributeType = *string
+
+func getCreateNetworkAreaPayloadGetNameAttributeTypeOk(arg CreateNetworkAreaPayloadGetNameAttributeType) (ret CreateNetworkAreaPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkAreaPayloadGetNameAttributeType(arg *CreateNetworkAreaPayloadGetNameAttributeType, val CreateNetworkAreaPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateNetworkAreaPayloadGetNameArgType = string
+type CreateNetworkAreaPayloadGetNameRetType = string
+
 // CreateNetworkAreaPayload struct for CreateNetworkAreaPayload
 type CreateNetworkAreaPayload struct {
 	// REQUIRED
-	AddressFamily *CreateAreaAddressFamily `json:"addressFamily"`
+	AddressFamily CreateNetworkAreaPayloadGetAddressFamilyAttributeType `json:"addressFamily"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateNetworkAreaPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name CreateNetworkAreaPayloadGetNameAttributeType `json:"name"`
 }
 
 type _CreateNetworkAreaPayload CreateNetworkAreaPayload
@@ -34,10 +95,10 @@ type _CreateNetworkAreaPayload CreateNetworkAreaPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateNetworkAreaPayload(addressFamily *CreateAreaAddressFamily, name *string) *CreateNetworkAreaPayload {
+func NewCreateNetworkAreaPayload(addressFamily CreateNetworkAreaPayloadGetAddressFamilyArgType, name CreateNetworkAreaPayloadGetNameArgType) *CreateNetworkAreaPayload {
 	this := CreateNetworkAreaPayload{}
-	this.AddressFamily = addressFamily
-	this.Name = name
+	setCreateNetworkAreaPayloadGetAddressFamilyAttributeType(&this.AddressFamily, addressFamily)
+	setCreateNetworkAreaPayloadGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -50,92 +111,73 @@ func NewCreateNetworkAreaPayloadWithDefaults() *CreateNetworkAreaPayload {
 }
 
 // GetAddressFamily returns the AddressFamily field value
-func (o *CreateNetworkAreaPayload) GetAddressFamily() *CreateAreaAddressFamily {
-	if o == nil || IsNil(o.AddressFamily) {
-		var ret *CreateAreaAddressFamily
-		return ret
-	}
-
-	return o.AddressFamily
+func (o *CreateNetworkAreaPayload) GetAddressFamily() (ret CreateNetworkAreaPayloadGetAddressFamilyRetType) {
+	ret, _ = o.GetAddressFamilyOk()
+	return ret
 }
 
 // GetAddressFamilyOk returns a tuple with the AddressFamily field value
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkAreaPayload) GetAddressFamilyOk() (*CreateAreaAddressFamily, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.AddressFamily, true
+func (o *CreateNetworkAreaPayload) GetAddressFamilyOk() (ret CreateNetworkAreaPayloadGetAddressFamilyRetType, ok bool) {
+	return getCreateNetworkAreaPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily)
 }
 
 // SetAddressFamily sets field value
-func (o *CreateNetworkAreaPayload) SetAddressFamily(v *CreateAreaAddressFamily) {
-	o.AddressFamily = v
+func (o *CreateNetworkAreaPayload) SetAddressFamily(v CreateNetworkAreaPayloadGetAddressFamilyRetType) {
+	setCreateNetworkAreaPayloadGetAddressFamilyAttributeType(&o.AddressFamily, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateNetworkAreaPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateNetworkAreaPayload) GetLabels() (res CreateNetworkAreaPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkAreaPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateNetworkAreaPayload) GetLabelsOk() (ret CreateNetworkAreaPayloadGetLabelsRetType, ok bool) {
+	return getCreateNetworkAreaPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateNetworkAreaPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateNetworkAreaPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateNetworkAreaPayload) SetLabels(v CreateNetworkAreaPayloadGetLabelsRetType) {
+	setCreateNetworkAreaPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value
-func (o *CreateNetworkAreaPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *CreateNetworkAreaPayload) GetName() (ret CreateNetworkAreaPayloadGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkAreaPayload) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateNetworkAreaPayload) GetNameOk() (ret CreateNetworkAreaPayloadGetNameRetType, ok bool) {
+	return getCreateNetworkAreaPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *CreateNetworkAreaPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateNetworkAreaPayload) SetName(v CreateNetworkAreaPayloadGetNameRetType) {
+	setCreateNetworkAreaPayloadGetNameAttributeType(&o.Name, v)
 }
 
 func (o CreateNetworkAreaPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["addressFamily"] = o.AddressFamily
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateNetworkAreaPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily); ok {
+		toSerialize["AddressFamily"] = val
+	}
+	if val, ok := getCreateNetworkAreaPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
+	}
+	if val, ok := getCreateNetworkAreaPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_create_network_area_range_payload.go b/services/iaas/model_create_network_area_range_payload.go
index 837d3d22d..cef18afc6 100644
--- a/services/iaas/model_create_network_area_range_payload.go
+++ b/services/iaas/model_create_network_area_range_payload.go
@@ -17,10 +17,30 @@ import (
 // checks if the CreateNetworkAreaRangePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNetworkAreaRangePayload{}
 
+/*
+	types and functions for ipv4
+*/
+
+// isArray
+type CreateNetworkAreaRangePayloadGetIpv4AttributeType = *[]NetworkRange
+type CreateNetworkAreaRangePayloadGetIpv4ArgType = []NetworkRange
+type CreateNetworkAreaRangePayloadGetIpv4RetType = []NetworkRange
+
+func getCreateNetworkAreaRangePayloadGetIpv4AttributeTypeOk(arg CreateNetworkAreaRangePayloadGetIpv4AttributeType) (ret CreateNetworkAreaRangePayloadGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkAreaRangePayloadGetIpv4AttributeType(arg *CreateNetworkAreaRangePayloadGetIpv4AttributeType, val CreateNetworkAreaRangePayloadGetIpv4RetType) {
+	*arg = &val
+}
+
 // CreateNetworkAreaRangePayload struct for CreateNetworkAreaRangePayload
 type CreateNetworkAreaRangePayload struct {
 	// A list of network ranges.
-	Ipv4 *[]NetworkRange `json:"ipv4,omitempty"`
+	Ipv4 CreateNetworkAreaRangePayloadGetIpv4AttributeType `json:"ipv4,omitempty"`
 }
 
 // NewCreateNetworkAreaRangePayload instantiates a new CreateNetworkAreaRangePayload object
@@ -41,41 +61,32 @@ func NewCreateNetworkAreaRangePayloadWithDefaults() *CreateNetworkAreaRangePaylo
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *CreateNetworkAreaRangePayload) GetIpv4() *[]NetworkRange {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *[]NetworkRange
-		return ret
-	}
-	return o.Ipv4
+func (o *CreateNetworkAreaRangePayload) GetIpv4() (res CreateNetworkAreaRangePayloadGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkAreaRangePayload) GetIpv4Ok() (*[]NetworkRange, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *CreateNetworkAreaRangePayload) GetIpv4Ok() (ret CreateNetworkAreaRangePayloadGetIpv4RetType, ok bool) {
+	return getCreateNetworkAreaRangePayloadGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *CreateNetworkAreaRangePayload) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given []NetworkRange and assigns it to the Ipv4 field.
-func (o *CreateNetworkAreaRangePayload) SetIpv4(v *[]NetworkRange) {
-	o.Ipv4 = v
+func (o *CreateNetworkAreaRangePayload) SetIpv4(v CreateNetworkAreaRangePayloadGetIpv4RetType) {
+	setCreateNetworkAreaRangePayloadGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 func (o CreateNetworkAreaRangePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getCreateNetworkAreaRangePayloadGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_network_area_route_payload.go b/services/iaas/model_create_network_area_route_payload.go
index 26c47565f..6a2d5d968 100644
--- a/services/iaas/model_create_network_area_route_payload.go
+++ b/services/iaas/model_create_network_area_route_payload.go
@@ -17,10 +17,30 @@ import (
 // checks if the CreateNetworkAreaRoutePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNetworkAreaRoutePayload{}
 
+/*
+	types and functions for ipv4
+*/
+
+// isArray
+type CreateNetworkAreaRoutePayloadGetIpv4AttributeType = *[]Route
+type CreateNetworkAreaRoutePayloadGetIpv4ArgType = []Route
+type CreateNetworkAreaRoutePayloadGetIpv4RetType = []Route
+
+func getCreateNetworkAreaRoutePayloadGetIpv4AttributeTypeOk(arg CreateNetworkAreaRoutePayloadGetIpv4AttributeType) (ret CreateNetworkAreaRoutePayloadGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkAreaRoutePayloadGetIpv4AttributeType(arg *CreateNetworkAreaRoutePayloadGetIpv4AttributeType, val CreateNetworkAreaRoutePayloadGetIpv4RetType) {
+	*arg = &val
+}
+
 // CreateNetworkAreaRoutePayload struct for CreateNetworkAreaRoutePayload
 type CreateNetworkAreaRoutePayload struct {
 	// A list of routes.
-	Ipv4 *[]Route `json:"ipv4,omitempty"`
+	Ipv4 CreateNetworkAreaRoutePayloadGetIpv4AttributeType `json:"ipv4,omitempty"`
 }
 
 // NewCreateNetworkAreaRoutePayload instantiates a new CreateNetworkAreaRoutePayload object
@@ -41,41 +61,32 @@ func NewCreateNetworkAreaRoutePayloadWithDefaults() *CreateNetworkAreaRoutePaylo
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *CreateNetworkAreaRoutePayload) GetIpv4() *[]Route {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *[]Route
-		return ret
-	}
-	return o.Ipv4
+func (o *CreateNetworkAreaRoutePayload) GetIpv4() (res CreateNetworkAreaRoutePayloadGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkAreaRoutePayload) GetIpv4Ok() (*[]Route, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *CreateNetworkAreaRoutePayload) GetIpv4Ok() (ret CreateNetworkAreaRoutePayloadGetIpv4RetType, ok bool) {
+	return getCreateNetworkAreaRoutePayloadGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *CreateNetworkAreaRoutePayload) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given []Route and assigns it to the Ipv4 field.
-func (o *CreateNetworkAreaRoutePayload) SetIpv4(v *[]Route) {
-	o.Ipv4 = v
+func (o *CreateNetworkAreaRoutePayload) SetIpv4(v CreateNetworkAreaRoutePayloadGetIpv4RetType) {
+	setCreateNetworkAreaRoutePayloadGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 func (o CreateNetworkAreaRoutePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getCreateNetworkAreaRoutePayloadGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_network_ipv4_body.go b/services/iaas/model_create_network_ipv4_body.go
index cf1a8ad43..c808af3ae 100644
--- a/services/iaas/model_create_network_ipv4_body.go
+++ b/services/iaas/model_create_network_ipv4_body.go
@@ -17,15 +17,101 @@ import (
 // checks if the CreateNetworkIPv4Body type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNetworkIPv4Body{}
 
+/*
+	types and functions for gateway
+*/
+
+// isNullableString
+type CreateNetworkIPv4BodyGetGatewayAttributeType = *NullableString
+
+func getCreateNetworkIPv4BodyGetGatewayAttributeTypeOk(arg CreateNetworkIPv4BodyGetGatewayAttributeType) (ret CreateNetworkIPv4BodyGetGatewayRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setCreateNetworkIPv4BodyGetGatewayAttributeType(arg *CreateNetworkIPv4BodyGetGatewayAttributeType, val CreateNetworkIPv4BodyGetGatewayRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type CreateNetworkIPv4BodyGetGatewayArgType = *string
+type CreateNetworkIPv4BodyGetGatewayRetType = *string
+
+/*
+	types and functions for nameservers
+*/
+
+// isArray
+type CreateNetworkIPv4BodyGetNameserversAttributeType = *[]string
+type CreateNetworkIPv4BodyGetNameserversArgType = []string
+type CreateNetworkIPv4BodyGetNameserversRetType = []string
+
+func getCreateNetworkIPv4BodyGetNameserversAttributeTypeOk(arg CreateNetworkIPv4BodyGetNameserversAttributeType) (ret CreateNetworkIPv4BodyGetNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkIPv4BodyGetNameserversAttributeType(arg *CreateNetworkIPv4BodyGetNameserversAttributeType, val CreateNetworkIPv4BodyGetNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for prefix
+*/
+
+// isNotNullableString
+type CreateNetworkIPv4BodyGetPrefixAttributeType = *string
+
+func getCreateNetworkIPv4BodyGetPrefixAttributeTypeOk(arg CreateNetworkIPv4BodyGetPrefixAttributeType) (ret CreateNetworkIPv4BodyGetPrefixRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkIPv4BodyGetPrefixAttributeType(arg *CreateNetworkIPv4BodyGetPrefixAttributeType, val CreateNetworkIPv4BodyGetPrefixRetType) {
+	*arg = &val
+}
+
+type CreateNetworkIPv4BodyGetPrefixArgType = string
+type CreateNetworkIPv4BodyGetPrefixRetType = string
+
+/*
+	types and functions for prefixLength
+*/
+
+// isInteger
+type CreateNetworkIPv4BodyGetPrefixLengthAttributeType = *int64
+type CreateNetworkIPv4BodyGetPrefixLengthArgType = int64
+type CreateNetworkIPv4BodyGetPrefixLengthRetType = int64
+
+func getCreateNetworkIPv4BodyGetPrefixLengthAttributeTypeOk(arg CreateNetworkIPv4BodyGetPrefixLengthAttributeType) (ret CreateNetworkIPv4BodyGetPrefixLengthRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkIPv4BodyGetPrefixLengthAttributeType(arg *CreateNetworkIPv4BodyGetPrefixLengthAttributeType, val CreateNetworkIPv4BodyGetPrefixLengthRetType) {
+	*arg = &val
+}
+
 // CreateNetworkIPv4Body The config object for an IPv4 network.
 type CreateNetworkIPv4Body struct {
 	// The gateway of a network. If not specified the first IP of the network will be assigned as the gateway. If 'null' is sent, then the network doesn't have a gateway.
-	Gateway *NullableString `json:"gateway,omitempty"`
+	Gateway CreateNetworkIPv4BodyGetGatewayAttributeType `json:"gateway,omitempty"`
 	// A list containing DNS Servers/Nameservers for IPv4.
-	Nameservers *[]string `json:"nameservers,omitempty"`
+	Nameservers CreateNetworkIPv4BodyGetNameserversAttributeType `json:"nameservers,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
-	Prefix       *string `json:"prefix,omitempty"`
-	PrefixLength *int64  `json:"prefixLength,omitempty"`
+	Prefix       CreateNetworkIPv4BodyGetPrefixAttributeType       `json:"prefix,omitempty"`
+	PrefixLength CreateNetworkIPv4BodyGetPrefixLengthAttributeType `json:"prefixLength,omitempty"`
 }
 
 // NewCreateNetworkIPv4Body instantiates a new CreateNetworkIPv4Body object
@@ -46,166 +132,121 @@ func NewCreateNetworkIPv4BodyWithDefaults() *CreateNetworkIPv4Body {
 }
 
 // GetGateway returns the Gateway field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *CreateNetworkIPv4Body) GetGateway() *string {
-	if o == nil || IsNil(o.Gateway) || IsNil(o.Gateway.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.Gateway.Get()
+func (o *CreateNetworkIPv4Body) GetGateway() (res CreateNetworkIPv4BodyGetGatewayRetType) {
+	res, _ = o.GetGatewayOk()
+	return
 }
 
 // GetGatewayOk returns a tuple with the Gateway field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *CreateNetworkIPv4Body) GetGatewayOk() (*string, bool) {
-	if o == nil || IsNil(o.Gateway) {
-		return nil, false
-	}
-	return o.Gateway.Get(), o.Gateway.IsSet()
+func (o *CreateNetworkIPv4Body) GetGatewayOk() (ret CreateNetworkIPv4BodyGetGatewayRetType, ok bool) {
+	return getCreateNetworkIPv4BodyGetGatewayAttributeTypeOk(o.Gateway)
 }
 
 // HasGateway returns a boolean if a field has been set.
 func (o *CreateNetworkIPv4Body) HasGateway() bool {
-	if o != nil && !IsNil(o.Gateway) && o.Gateway.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetGatewayOk()
+	return ok
 }
 
 // SetGateway gets a reference to the given string and assigns it to the Gateway field.
-func (o *CreateNetworkIPv4Body) SetGateway(v *string) {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(v)
+func (o *CreateNetworkIPv4Body) SetGateway(v CreateNetworkIPv4BodyGetGatewayRetType) {
+	setCreateNetworkIPv4BodyGetGatewayAttributeType(&o.Gateway, v)
 }
 
 // SetGatewayNil sets the value for Gateway to be an explicit nil
 func (o *CreateNetworkIPv4Body) SetGatewayNil() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(nil)
+	o.Gateway = nil
 }
 
 // UnsetGateway ensures that no value is present for Gateway, not even an explicit nil
 func (o *CreateNetworkIPv4Body) UnsetGateway() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Unset()
+	o.Gateway = nil
 }
 
 // GetNameservers returns the Nameservers field value if set, zero value otherwise.
-func (o *CreateNetworkIPv4Body) GetNameservers() *[]string {
-	if o == nil || IsNil(o.Nameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.Nameservers
+func (o *CreateNetworkIPv4Body) GetNameservers() (res CreateNetworkIPv4BodyGetNameserversRetType) {
+	res, _ = o.GetNameserversOk()
+	return
 }
 
 // GetNameserversOk returns a tuple with the Nameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkIPv4Body) GetNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Nameservers) {
-		return nil, false
-	}
-	return o.Nameservers, true
+func (o *CreateNetworkIPv4Body) GetNameserversOk() (ret CreateNetworkIPv4BodyGetNameserversRetType, ok bool) {
+	return getCreateNetworkIPv4BodyGetNameserversAttributeTypeOk(o.Nameservers)
 }
 
 // HasNameservers returns a boolean if a field has been set.
 func (o *CreateNetworkIPv4Body) HasNameservers() bool {
-	if o != nil && !IsNil(o.Nameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameserversOk()
+	return ok
 }
 
 // SetNameservers gets a reference to the given []string and assigns it to the Nameservers field.
-func (o *CreateNetworkIPv4Body) SetNameservers(v *[]string) {
-	o.Nameservers = v
+func (o *CreateNetworkIPv4Body) SetNameservers(v CreateNetworkIPv4BodyGetNameserversRetType) {
+	setCreateNetworkIPv4BodyGetNameserversAttributeType(&o.Nameservers, v)
 }
 
 // GetPrefix returns the Prefix field value if set, zero value otherwise.
-func (o *CreateNetworkIPv4Body) GetPrefix() *string {
-	if o == nil || IsNil(o.Prefix) {
-		var ret *string
-		return ret
-	}
-	return o.Prefix
+func (o *CreateNetworkIPv4Body) GetPrefix() (res CreateNetworkIPv4BodyGetPrefixRetType) {
+	res, _ = o.GetPrefixOk()
+	return
 }
 
 // GetPrefixOk returns a tuple with the Prefix field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkIPv4Body) GetPrefixOk() (*string, bool) {
-	if o == nil || IsNil(o.Prefix) {
-		return nil, false
-	}
-	return o.Prefix, true
+func (o *CreateNetworkIPv4Body) GetPrefixOk() (ret CreateNetworkIPv4BodyGetPrefixRetType, ok bool) {
+	return getCreateNetworkIPv4BodyGetPrefixAttributeTypeOk(o.Prefix)
 }
 
 // HasPrefix returns a boolean if a field has been set.
 func (o *CreateNetworkIPv4Body) HasPrefix() bool {
-	if o != nil && !IsNil(o.Prefix) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPrefixOk()
+	return ok
 }
 
 // SetPrefix gets a reference to the given string and assigns it to the Prefix field.
-func (o *CreateNetworkIPv4Body) SetPrefix(v *string) {
-	o.Prefix = v
+func (o *CreateNetworkIPv4Body) SetPrefix(v CreateNetworkIPv4BodyGetPrefixRetType) {
+	setCreateNetworkIPv4BodyGetPrefixAttributeType(&o.Prefix, v)
 }
 
 // GetPrefixLength returns the PrefixLength field value if set, zero value otherwise.
-func (o *CreateNetworkIPv4Body) GetPrefixLength() *int64 {
-	if o == nil || IsNil(o.PrefixLength) {
-		var ret *int64
-		return ret
-	}
-	return o.PrefixLength
+func (o *CreateNetworkIPv4Body) GetPrefixLength() (res CreateNetworkIPv4BodyGetPrefixLengthRetType) {
+	res, _ = o.GetPrefixLengthOk()
+	return
 }
 
 // GetPrefixLengthOk returns a tuple with the PrefixLength field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkIPv4Body) GetPrefixLengthOk() (*int64, bool) {
-	if o == nil || IsNil(o.PrefixLength) {
-		return nil, false
-	}
-	return o.PrefixLength, true
+func (o *CreateNetworkIPv4Body) GetPrefixLengthOk() (ret CreateNetworkIPv4BodyGetPrefixLengthRetType, ok bool) {
+	return getCreateNetworkIPv4BodyGetPrefixLengthAttributeTypeOk(o.PrefixLength)
 }
 
 // HasPrefixLength returns a boolean if a field has been set.
 func (o *CreateNetworkIPv4Body) HasPrefixLength() bool {
-	if o != nil && !IsNil(o.PrefixLength) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPrefixLengthOk()
+	return ok
 }
 
 // SetPrefixLength gets a reference to the given int64 and assigns it to the PrefixLength field.
-func (o *CreateNetworkIPv4Body) SetPrefixLength(v *int64) {
-	o.PrefixLength = v
+func (o *CreateNetworkIPv4Body) SetPrefixLength(v CreateNetworkIPv4BodyGetPrefixLengthRetType) {
+	setCreateNetworkIPv4BodyGetPrefixLengthAttributeType(&o.PrefixLength, v)
 }
 
 func (o CreateNetworkIPv4Body) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if o.Gateway.IsSet() {
-		toSerialize["gateway"] = o.Gateway.Get()
+	if val, ok := getCreateNetworkIPv4BodyGetGatewayAttributeTypeOk(o.Gateway); ok {
+		toSerialize["Gateway"] = val
 	}
-	if !IsNil(o.Nameservers) {
-		toSerialize["nameservers"] = o.Nameservers
+	if val, ok := getCreateNetworkIPv4BodyGetNameserversAttributeTypeOk(o.Nameservers); ok {
+		toSerialize["Nameservers"] = val
 	}
-	if !IsNil(o.Prefix) {
-		toSerialize["prefix"] = o.Prefix
+	if val, ok := getCreateNetworkIPv4BodyGetPrefixAttributeTypeOk(o.Prefix); ok {
+		toSerialize["Prefix"] = val
 	}
-	if !IsNil(o.PrefixLength) {
-		toSerialize["prefixLength"] = o.PrefixLength
+	if val, ok := getCreateNetworkIPv4BodyGetPrefixLengthAttributeTypeOk(o.PrefixLength); ok {
+		toSerialize["PrefixLength"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_network_ipv6_body.go b/services/iaas/model_create_network_ipv6_body.go
index 66f52b646..529c68ac2 100644
--- a/services/iaas/model_create_network_ipv6_body.go
+++ b/services/iaas/model_create_network_ipv6_body.go
@@ -17,15 +17,101 @@ import (
 // checks if the CreateNetworkIPv6Body type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNetworkIPv6Body{}
 
+/*
+	types and functions for gateway
+*/
+
+// isNullableString
+type CreateNetworkIPv6BodyGetGatewayAttributeType = *NullableString
+
+func getCreateNetworkIPv6BodyGetGatewayAttributeTypeOk(arg CreateNetworkIPv6BodyGetGatewayAttributeType) (ret CreateNetworkIPv6BodyGetGatewayRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setCreateNetworkIPv6BodyGetGatewayAttributeType(arg *CreateNetworkIPv6BodyGetGatewayAttributeType, val CreateNetworkIPv6BodyGetGatewayRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type CreateNetworkIPv6BodyGetGatewayArgType = *string
+type CreateNetworkIPv6BodyGetGatewayRetType = *string
+
+/*
+	types and functions for nameservers
+*/
+
+// isArray
+type CreateNetworkIPv6BodyGetNameserversAttributeType = *[]string
+type CreateNetworkIPv6BodyGetNameserversArgType = []string
+type CreateNetworkIPv6BodyGetNameserversRetType = []string
+
+func getCreateNetworkIPv6BodyGetNameserversAttributeTypeOk(arg CreateNetworkIPv6BodyGetNameserversAttributeType) (ret CreateNetworkIPv6BodyGetNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkIPv6BodyGetNameserversAttributeType(arg *CreateNetworkIPv6BodyGetNameserversAttributeType, val CreateNetworkIPv6BodyGetNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for prefix
+*/
+
+// isNotNullableString
+type CreateNetworkIPv6BodyGetPrefixAttributeType = *string
+
+func getCreateNetworkIPv6BodyGetPrefixAttributeTypeOk(arg CreateNetworkIPv6BodyGetPrefixAttributeType) (ret CreateNetworkIPv6BodyGetPrefixRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkIPv6BodyGetPrefixAttributeType(arg *CreateNetworkIPv6BodyGetPrefixAttributeType, val CreateNetworkIPv6BodyGetPrefixRetType) {
+	*arg = &val
+}
+
+type CreateNetworkIPv6BodyGetPrefixArgType = string
+type CreateNetworkIPv6BodyGetPrefixRetType = string
+
+/*
+	types and functions for prefixLength
+*/
+
+// isInteger
+type CreateNetworkIPv6BodyGetPrefixLengthAttributeType = *int64
+type CreateNetworkIPv6BodyGetPrefixLengthArgType = int64
+type CreateNetworkIPv6BodyGetPrefixLengthRetType = int64
+
+func getCreateNetworkIPv6BodyGetPrefixLengthAttributeTypeOk(arg CreateNetworkIPv6BodyGetPrefixLengthAttributeType) (ret CreateNetworkIPv6BodyGetPrefixLengthRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkIPv6BodyGetPrefixLengthAttributeType(arg *CreateNetworkIPv6BodyGetPrefixLengthAttributeType, val CreateNetworkIPv6BodyGetPrefixLengthRetType) {
+	*arg = &val
+}
+
 // CreateNetworkIPv6Body The config object for an IPv6 network.
 type CreateNetworkIPv6Body struct {
 	// The gateway of a network. If not specified the first IP of the network will be assigned as the gateway. If 'null' is sent, then the network doesn't have a gateway.
-	Gateway *NullableString `json:"gateway,omitempty"`
+	Gateway CreateNetworkIPv6BodyGetGatewayAttributeType `json:"gateway,omitempty"`
 	// A list containing DNS Servers/Nameservers for IPv6.
-	Nameservers *[]string `json:"nameservers,omitempty"`
+	Nameservers CreateNetworkIPv6BodyGetNameserversAttributeType `json:"nameservers,omitempty"`
 	// Classless Inter-Domain Routing (CIDR) for IPv6.
-	Prefix       *string `json:"prefix,omitempty"`
-	PrefixLength *int64  `json:"prefixLength,omitempty"`
+	Prefix       CreateNetworkIPv6BodyGetPrefixAttributeType       `json:"prefix,omitempty"`
+	PrefixLength CreateNetworkIPv6BodyGetPrefixLengthAttributeType `json:"prefixLength,omitempty"`
 }
 
 // NewCreateNetworkIPv6Body instantiates a new CreateNetworkIPv6Body object
@@ -46,166 +132,121 @@ func NewCreateNetworkIPv6BodyWithDefaults() *CreateNetworkIPv6Body {
 }
 
 // GetGateway returns the Gateway field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *CreateNetworkIPv6Body) GetGateway() *string {
-	if o == nil || IsNil(o.Gateway) || IsNil(o.Gateway.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.Gateway.Get()
+func (o *CreateNetworkIPv6Body) GetGateway() (res CreateNetworkIPv6BodyGetGatewayRetType) {
+	res, _ = o.GetGatewayOk()
+	return
 }
 
 // GetGatewayOk returns a tuple with the Gateway field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *CreateNetworkIPv6Body) GetGatewayOk() (*string, bool) {
-	if o == nil || IsNil(o.Gateway) {
-		return nil, false
-	}
-	return o.Gateway.Get(), o.Gateway.IsSet()
+func (o *CreateNetworkIPv6Body) GetGatewayOk() (ret CreateNetworkIPv6BodyGetGatewayRetType, ok bool) {
+	return getCreateNetworkIPv6BodyGetGatewayAttributeTypeOk(o.Gateway)
 }
 
 // HasGateway returns a boolean if a field has been set.
 func (o *CreateNetworkIPv6Body) HasGateway() bool {
-	if o != nil && !IsNil(o.Gateway) && o.Gateway.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetGatewayOk()
+	return ok
 }
 
 // SetGateway gets a reference to the given string and assigns it to the Gateway field.
-func (o *CreateNetworkIPv6Body) SetGateway(v *string) {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(v)
+func (o *CreateNetworkIPv6Body) SetGateway(v CreateNetworkIPv6BodyGetGatewayRetType) {
+	setCreateNetworkIPv6BodyGetGatewayAttributeType(&o.Gateway, v)
 }
 
 // SetGatewayNil sets the value for Gateway to be an explicit nil
 func (o *CreateNetworkIPv6Body) SetGatewayNil() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(nil)
+	o.Gateway = nil
 }
 
 // UnsetGateway ensures that no value is present for Gateway, not even an explicit nil
 func (o *CreateNetworkIPv6Body) UnsetGateway() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Unset()
+	o.Gateway = nil
 }
 
 // GetNameservers returns the Nameservers field value if set, zero value otherwise.
-func (o *CreateNetworkIPv6Body) GetNameservers() *[]string {
-	if o == nil || IsNil(o.Nameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.Nameservers
+func (o *CreateNetworkIPv6Body) GetNameservers() (res CreateNetworkIPv6BodyGetNameserversRetType) {
+	res, _ = o.GetNameserversOk()
+	return
 }
 
 // GetNameserversOk returns a tuple with the Nameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkIPv6Body) GetNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Nameservers) {
-		return nil, false
-	}
-	return o.Nameservers, true
+func (o *CreateNetworkIPv6Body) GetNameserversOk() (ret CreateNetworkIPv6BodyGetNameserversRetType, ok bool) {
+	return getCreateNetworkIPv6BodyGetNameserversAttributeTypeOk(o.Nameservers)
 }
 
 // HasNameservers returns a boolean if a field has been set.
 func (o *CreateNetworkIPv6Body) HasNameservers() bool {
-	if o != nil && !IsNil(o.Nameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameserversOk()
+	return ok
 }
 
 // SetNameservers gets a reference to the given []string and assigns it to the Nameservers field.
-func (o *CreateNetworkIPv6Body) SetNameservers(v *[]string) {
-	o.Nameservers = v
+func (o *CreateNetworkIPv6Body) SetNameservers(v CreateNetworkIPv6BodyGetNameserversRetType) {
+	setCreateNetworkIPv6BodyGetNameserversAttributeType(&o.Nameservers, v)
 }
 
 // GetPrefix returns the Prefix field value if set, zero value otherwise.
-func (o *CreateNetworkIPv6Body) GetPrefix() *string {
-	if o == nil || IsNil(o.Prefix) {
-		var ret *string
-		return ret
-	}
-	return o.Prefix
+func (o *CreateNetworkIPv6Body) GetPrefix() (res CreateNetworkIPv6BodyGetPrefixRetType) {
+	res, _ = o.GetPrefixOk()
+	return
 }
 
 // GetPrefixOk returns a tuple with the Prefix field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkIPv6Body) GetPrefixOk() (*string, bool) {
-	if o == nil || IsNil(o.Prefix) {
-		return nil, false
-	}
-	return o.Prefix, true
+func (o *CreateNetworkIPv6Body) GetPrefixOk() (ret CreateNetworkIPv6BodyGetPrefixRetType, ok bool) {
+	return getCreateNetworkIPv6BodyGetPrefixAttributeTypeOk(o.Prefix)
 }
 
 // HasPrefix returns a boolean if a field has been set.
 func (o *CreateNetworkIPv6Body) HasPrefix() bool {
-	if o != nil && !IsNil(o.Prefix) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPrefixOk()
+	return ok
 }
 
 // SetPrefix gets a reference to the given string and assigns it to the Prefix field.
-func (o *CreateNetworkIPv6Body) SetPrefix(v *string) {
-	o.Prefix = v
+func (o *CreateNetworkIPv6Body) SetPrefix(v CreateNetworkIPv6BodyGetPrefixRetType) {
+	setCreateNetworkIPv6BodyGetPrefixAttributeType(&o.Prefix, v)
 }
 
 // GetPrefixLength returns the PrefixLength field value if set, zero value otherwise.
-func (o *CreateNetworkIPv6Body) GetPrefixLength() *int64 {
-	if o == nil || IsNil(o.PrefixLength) {
-		var ret *int64
-		return ret
-	}
-	return o.PrefixLength
+func (o *CreateNetworkIPv6Body) GetPrefixLength() (res CreateNetworkIPv6BodyGetPrefixLengthRetType) {
+	res, _ = o.GetPrefixLengthOk()
+	return
 }
 
 // GetPrefixLengthOk returns a tuple with the PrefixLength field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkIPv6Body) GetPrefixLengthOk() (*int64, bool) {
-	if o == nil || IsNil(o.PrefixLength) {
-		return nil, false
-	}
-	return o.PrefixLength, true
+func (o *CreateNetworkIPv6Body) GetPrefixLengthOk() (ret CreateNetworkIPv6BodyGetPrefixLengthRetType, ok bool) {
+	return getCreateNetworkIPv6BodyGetPrefixLengthAttributeTypeOk(o.PrefixLength)
 }
 
 // HasPrefixLength returns a boolean if a field has been set.
 func (o *CreateNetworkIPv6Body) HasPrefixLength() bool {
-	if o != nil && !IsNil(o.PrefixLength) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPrefixLengthOk()
+	return ok
 }
 
 // SetPrefixLength gets a reference to the given int64 and assigns it to the PrefixLength field.
-func (o *CreateNetworkIPv6Body) SetPrefixLength(v *int64) {
-	o.PrefixLength = v
+func (o *CreateNetworkIPv6Body) SetPrefixLength(v CreateNetworkIPv6BodyGetPrefixLengthRetType) {
+	setCreateNetworkIPv6BodyGetPrefixLengthAttributeType(&o.PrefixLength, v)
 }
 
 func (o CreateNetworkIPv6Body) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if o.Gateway.IsSet() {
-		toSerialize["gateway"] = o.Gateway.Get()
+	if val, ok := getCreateNetworkIPv6BodyGetGatewayAttributeTypeOk(o.Gateway); ok {
+		toSerialize["Gateway"] = val
 	}
-	if !IsNil(o.Nameservers) {
-		toSerialize["nameservers"] = o.Nameservers
+	if val, ok := getCreateNetworkIPv6BodyGetNameserversAttributeTypeOk(o.Nameservers); ok {
+		toSerialize["Nameservers"] = val
 	}
-	if !IsNil(o.Prefix) {
-		toSerialize["prefix"] = o.Prefix
+	if val, ok := getCreateNetworkIPv6BodyGetPrefixAttributeTypeOk(o.Prefix); ok {
+		toSerialize["Prefix"] = val
 	}
-	if !IsNil(o.PrefixLength) {
-		toSerialize["prefixLength"] = o.PrefixLength
+	if val, ok := getCreateNetworkIPv6BodyGetPrefixLengthAttributeTypeOk(o.PrefixLength); ok {
+		toSerialize["PrefixLength"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_network_payload.go b/services/iaas/model_create_network_payload.go
index e79a1cd68..fd24a53ff 100644
--- a/services/iaas/model_create_network_payload.go
+++ b/services/iaas/model_create_network_payload.go
@@ -17,16 +17,97 @@ import (
 // checks if the CreateNetworkPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNetworkPayload{}
 
+/*
+	types and functions for addressFamily
+*/
+
+// isModel
+type CreateNetworkPayloadGetAddressFamilyAttributeType = *CreateNetworkAddressFamily
+type CreateNetworkPayloadGetAddressFamilyArgType = CreateNetworkAddressFamily
+type CreateNetworkPayloadGetAddressFamilyRetType = CreateNetworkAddressFamily
+
+func getCreateNetworkPayloadGetAddressFamilyAttributeTypeOk(arg CreateNetworkPayloadGetAddressFamilyAttributeType) (ret CreateNetworkPayloadGetAddressFamilyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkPayloadGetAddressFamilyAttributeType(arg *CreateNetworkPayloadGetAddressFamilyAttributeType, val CreateNetworkPayloadGetAddressFamilyRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateNetworkPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateNetworkPayloadGetLabelsArgType = map[string]interface{}
+type CreateNetworkPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateNetworkPayloadGetLabelsAttributeTypeOk(arg CreateNetworkPayloadGetLabelsAttributeType) (ret CreateNetworkPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkPayloadGetLabelsAttributeType(arg *CreateNetworkPayloadGetLabelsAttributeType, val CreateNetworkPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateNetworkPayloadGetNameAttributeType = *string
+
+func getCreateNetworkPayloadGetNameAttributeTypeOk(arg CreateNetworkPayloadGetNameAttributeType) (ret CreateNetworkPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkPayloadGetNameAttributeType(arg *CreateNetworkPayloadGetNameAttributeType, val CreateNetworkPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateNetworkPayloadGetNameArgType = string
+type CreateNetworkPayloadGetNameRetType = string
+
+/*
+	types and functions for routed
+*/
+
+// isBoolean
+type CreateNetworkPayloadgetRoutedAttributeType = *bool
+type CreateNetworkPayloadgetRoutedArgType = bool
+type CreateNetworkPayloadgetRoutedRetType = bool
+
+func getCreateNetworkPayloadgetRoutedAttributeTypeOk(arg CreateNetworkPayloadgetRoutedAttributeType) (ret CreateNetworkPayloadgetRoutedRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNetworkPayloadgetRoutedAttributeType(arg *CreateNetworkPayloadgetRoutedAttributeType, val CreateNetworkPayloadgetRoutedRetType) {
+	*arg = &val
+}
+
 // CreateNetworkPayload Object that represents the request body for a network create.
 type CreateNetworkPayload struct {
-	AddressFamily *CreateNetworkAddressFamily `json:"addressFamily,omitempty"`
+	AddressFamily CreateNetworkPayloadGetAddressFamilyAttributeType `json:"addressFamily,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateNetworkPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name CreateNetworkPayloadGetNameAttributeType `json:"name"`
 	// Shows if the network is routed and therefore accessible from other networks.
-	Routed *bool `json:"routed,omitempty"`
+	Routed CreateNetworkPayloadgetRoutedAttributeType `json:"routed,omitempty"`
 }
 
 type _CreateNetworkPayload CreateNetworkPayload
@@ -35,9 +116,9 @@ type _CreateNetworkPayload CreateNetworkPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateNetworkPayload(name *string) *CreateNetworkPayload {
+func NewCreateNetworkPayload(name CreateNetworkPayloadGetNameArgType) *CreateNetworkPayload {
 	this := CreateNetworkPayload{}
-	this.Name = name
+	setCreateNetworkPayloadGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -50,136 +131,104 @@ func NewCreateNetworkPayloadWithDefaults() *CreateNetworkPayload {
 }
 
 // GetAddressFamily returns the AddressFamily field value if set, zero value otherwise.
-func (o *CreateNetworkPayload) GetAddressFamily() *CreateNetworkAddressFamily {
-	if o == nil || IsNil(o.AddressFamily) {
-		var ret *CreateNetworkAddressFamily
-		return ret
-	}
-	return o.AddressFamily
+func (o *CreateNetworkPayload) GetAddressFamily() (res CreateNetworkPayloadGetAddressFamilyRetType) {
+	res, _ = o.GetAddressFamilyOk()
+	return
 }
 
 // GetAddressFamilyOk returns a tuple with the AddressFamily field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkPayload) GetAddressFamilyOk() (*CreateNetworkAddressFamily, bool) {
-	if o == nil || IsNil(o.AddressFamily) {
-		return nil, false
-	}
-	return o.AddressFamily, true
+func (o *CreateNetworkPayload) GetAddressFamilyOk() (ret CreateNetworkPayloadGetAddressFamilyRetType, ok bool) {
+	return getCreateNetworkPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily)
 }
 
 // HasAddressFamily returns a boolean if a field has been set.
 func (o *CreateNetworkPayload) HasAddressFamily() bool {
-	if o != nil && !IsNil(o.AddressFamily) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAddressFamilyOk()
+	return ok
 }
 
 // SetAddressFamily gets a reference to the given CreateNetworkAddressFamily and assigns it to the AddressFamily field.
-func (o *CreateNetworkPayload) SetAddressFamily(v *CreateNetworkAddressFamily) {
-	o.AddressFamily = v
+func (o *CreateNetworkPayload) SetAddressFamily(v CreateNetworkPayloadGetAddressFamilyRetType) {
+	setCreateNetworkPayloadGetAddressFamilyAttributeType(&o.AddressFamily, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateNetworkPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateNetworkPayload) GetLabels() (res CreateNetworkPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateNetworkPayload) GetLabelsOk() (ret CreateNetworkPayloadGetLabelsRetType, ok bool) {
+	return getCreateNetworkPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateNetworkPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateNetworkPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateNetworkPayload) SetLabels(v CreateNetworkPayloadGetLabelsRetType) {
+	setCreateNetworkPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value
-func (o *CreateNetworkPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *CreateNetworkPayload) GetName() (ret CreateNetworkPayloadGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkPayload) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateNetworkPayload) GetNameOk() (ret CreateNetworkPayloadGetNameRetType, ok bool) {
+	return getCreateNetworkPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *CreateNetworkPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateNetworkPayload) SetName(v CreateNetworkPayloadGetNameRetType) {
+	setCreateNetworkPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetRouted returns the Routed field value if set, zero value otherwise.
-func (o *CreateNetworkPayload) GetRouted() *bool {
-	if o == nil || IsNil(o.Routed) {
-		var ret *bool
-		return ret
-	}
-	return o.Routed
+func (o *CreateNetworkPayload) GetRouted() (res CreateNetworkPayloadgetRoutedRetType) {
+	res, _ = o.GetRoutedOk()
+	return
 }
 
 // GetRoutedOk returns a tuple with the Routed field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNetworkPayload) GetRoutedOk() (*bool, bool) {
-	if o == nil || IsNil(o.Routed) {
-		return nil, false
-	}
-	return o.Routed, true
+func (o *CreateNetworkPayload) GetRoutedOk() (ret CreateNetworkPayloadgetRoutedRetType, ok bool) {
+	return getCreateNetworkPayloadgetRoutedAttributeTypeOk(o.Routed)
 }
 
 // HasRouted returns a boolean if a field has been set.
 func (o *CreateNetworkPayload) HasRouted() bool {
-	if o != nil && !IsNil(o.Routed) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRoutedOk()
+	return ok
 }
 
 // SetRouted gets a reference to the given bool and assigns it to the Routed field.
-func (o *CreateNetworkPayload) SetRouted(v *bool) {
-	o.Routed = v
+func (o *CreateNetworkPayload) SetRouted(v CreateNetworkPayloadgetRoutedRetType) {
+	setCreateNetworkPayloadgetRoutedAttributeType(&o.Routed, v)
 }
 
 func (o CreateNetworkPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AddressFamily) {
-		toSerialize["addressFamily"] = o.AddressFamily
+	if val, ok := getCreateNetworkPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily); ok {
+		toSerialize["AddressFamily"] = val
+	}
+	if val, ok := getCreateNetworkPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateNetworkPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Routed) {
-		toSerialize["routed"] = o.Routed
+	if val, ok := getCreateNetworkPayloadgetRoutedAttributeTypeOk(o.Routed); ok {
+		toSerialize["Routed"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_nic_payload.go b/services/iaas/model_create_nic_payload.go
index 54916f4e6..8cb9c0806 100644
--- a/services/iaas/model_create_nic_payload.go
+++ b/services/iaas/model_create_nic_payload.go
@@ -17,32 +17,301 @@ import (
 // checks if the CreateNicPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateNicPayload{}
 
+/*
+	types and functions for allowedAddresses
+*/
+
+// isArray
+type CreateNicPayloadGetAllowedAddressesAttributeType = *[]AllowedAddressesInner
+type CreateNicPayloadGetAllowedAddressesArgType = []AllowedAddressesInner
+type CreateNicPayloadGetAllowedAddressesRetType = []AllowedAddressesInner
+
+func getCreateNicPayloadGetAllowedAddressesAttributeTypeOk(arg CreateNicPayloadGetAllowedAddressesAttributeType) (ret CreateNicPayloadGetAllowedAddressesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetAllowedAddressesAttributeType(arg *CreateNicPayloadGetAllowedAddressesAttributeType, val CreateNicPayloadGetAllowedAddressesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for device
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetDeviceAttributeType = *string
+
+func getCreateNicPayloadGetDeviceAttributeTypeOk(arg CreateNicPayloadGetDeviceAttributeType) (ret CreateNicPayloadGetDeviceRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetDeviceAttributeType(arg *CreateNicPayloadGetDeviceAttributeType, val CreateNicPayloadGetDeviceRetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetDeviceArgType = string
+type CreateNicPayloadGetDeviceRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetIdAttributeType = *string
+
+func getCreateNicPayloadGetIdAttributeTypeOk(arg CreateNicPayloadGetIdAttributeType) (ret CreateNicPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetIdAttributeType(arg *CreateNicPayloadGetIdAttributeType, val CreateNicPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetIdArgType = string
+type CreateNicPayloadGetIdRetType = string
+
+/*
+	types and functions for ipv4
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetIpv4AttributeType = *string
+
+func getCreateNicPayloadGetIpv4AttributeTypeOk(arg CreateNicPayloadGetIpv4AttributeType) (ret CreateNicPayloadGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetIpv4AttributeType(arg *CreateNicPayloadGetIpv4AttributeType, val CreateNicPayloadGetIpv4RetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetIpv4ArgType = string
+type CreateNicPayloadGetIpv4RetType = string
+
+/*
+	types and functions for ipv6
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetIpv6AttributeType = *string
+
+func getCreateNicPayloadGetIpv6AttributeTypeOk(arg CreateNicPayloadGetIpv6AttributeType) (ret CreateNicPayloadGetIpv6RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetIpv6AttributeType(arg *CreateNicPayloadGetIpv6AttributeType, val CreateNicPayloadGetIpv6RetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetIpv6ArgType = string
+type CreateNicPayloadGetIpv6RetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateNicPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateNicPayloadGetLabelsArgType = map[string]interface{}
+type CreateNicPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateNicPayloadGetLabelsAttributeTypeOk(arg CreateNicPayloadGetLabelsAttributeType) (ret CreateNicPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetLabelsAttributeType(arg *CreateNicPayloadGetLabelsAttributeType, val CreateNicPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for mac
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetMacAttributeType = *string
+
+func getCreateNicPayloadGetMacAttributeTypeOk(arg CreateNicPayloadGetMacAttributeType) (ret CreateNicPayloadGetMacRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetMacAttributeType(arg *CreateNicPayloadGetMacAttributeType, val CreateNicPayloadGetMacRetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetMacArgType = string
+type CreateNicPayloadGetMacRetType = string
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetNameAttributeType = *string
+
+func getCreateNicPayloadGetNameAttributeTypeOk(arg CreateNicPayloadGetNameAttributeType) (ret CreateNicPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetNameAttributeType(arg *CreateNicPayloadGetNameAttributeType, val CreateNicPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetNameArgType = string
+type CreateNicPayloadGetNameRetType = string
+
+/*
+	types and functions for networkId
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetNetworkIdAttributeType = *string
+
+func getCreateNicPayloadGetNetworkIdAttributeTypeOk(arg CreateNicPayloadGetNetworkIdAttributeType) (ret CreateNicPayloadGetNetworkIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetNetworkIdAttributeType(arg *CreateNicPayloadGetNetworkIdAttributeType, val CreateNicPayloadGetNetworkIdRetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetNetworkIdArgType = string
+type CreateNicPayloadGetNetworkIdRetType = string
+
+/*
+	types and functions for nicSecurity
+*/
+
+// isBoolean
+type CreateNicPayloadgetNicSecurityAttributeType = *bool
+type CreateNicPayloadgetNicSecurityArgType = bool
+type CreateNicPayloadgetNicSecurityRetType = bool
+
+func getCreateNicPayloadgetNicSecurityAttributeTypeOk(arg CreateNicPayloadgetNicSecurityAttributeType) (ret CreateNicPayloadgetNicSecurityRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadgetNicSecurityAttributeType(arg *CreateNicPayloadgetNicSecurityAttributeType, val CreateNicPayloadgetNicSecurityRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for securityGroups
+*/
+
+// isArray
+type CreateNicPayloadGetSecurityGroupsAttributeType = *[]string
+type CreateNicPayloadGetSecurityGroupsArgType = []string
+type CreateNicPayloadGetSecurityGroupsRetType = []string
+
+func getCreateNicPayloadGetSecurityGroupsAttributeTypeOk(arg CreateNicPayloadGetSecurityGroupsAttributeType) (ret CreateNicPayloadGetSecurityGroupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetSecurityGroupsAttributeType(arg *CreateNicPayloadGetSecurityGroupsAttributeType, val CreateNicPayloadGetSecurityGroupsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetStatusAttributeType = *string
+
+func getCreateNicPayloadGetStatusAttributeTypeOk(arg CreateNicPayloadGetStatusAttributeType) (ret CreateNicPayloadGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetStatusAttributeType(arg *CreateNicPayloadGetStatusAttributeType, val CreateNicPayloadGetStatusRetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetStatusArgType = string
+type CreateNicPayloadGetStatusRetType = string
+
+/*
+	types and functions for type
+*/
+
+// isNotNullableString
+type CreateNicPayloadGetTypeAttributeType = *string
+
+func getCreateNicPayloadGetTypeAttributeTypeOk(arg CreateNicPayloadGetTypeAttributeType) (ret CreateNicPayloadGetTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateNicPayloadGetTypeAttributeType(arg *CreateNicPayloadGetTypeAttributeType, val CreateNicPayloadGetTypeRetType) {
+	*arg = &val
+}
+
+type CreateNicPayloadGetTypeArgType = string
+type CreateNicPayloadGetTypeRetType = string
+
 // CreateNicPayload Object that represents a network interface.
 type CreateNicPayload struct {
 	// A list of IPs or CIDR notations.
-	AllowedAddresses *[]AllowedAddressesInner `json:"allowedAddresses,omitempty"`
+	AllowedAddresses CreateNicPayloadGetAllowedAddressesAttributeType `json:"allowedAddresses,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Device *string `json:"device,omitempty"`
+	Device CreateNicPayloadGetDeviceAttributeType `json:"device,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateNicPayloadGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents an IP address.
-	Ipv4 *string `json:"ipv4,omitempty"`
+	Ipv4 CreateNicPayloadGetIpv4AttributeType `json:"ipv4,omitempty"`
 	// Object that represents an IPv6 address.
-	Ipv6 *string `json:"ipv6,omitempty"`
+	Ipv6 CreateNicPayloadGetIpv6AttributeType `json:"ipv6,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateNicPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// Object that represents an MAC address.
-	Mac *string `json:"mac,omitempty"`
+	Mac CreateNicPayloadGetMacAttributeType `json:"mac,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name CreateNicPayloadGetNameAttributeType `json:"name,omitempty"`
 	// Universally Unique Identifier (UUID).
-	NetworkId *string `json:"networkId,omitempty"`
+	NetworkId CreateNicPayloadGetNetworkIdAttributeType `json:"networkId,omitempty"`
 	// If this is set to false, then no security groups will apply to this network interface.
-	NicSecurity *bool `json:"nicSecurity,omitempty"`
+	NicSecurity CreateNicPayloadgetNicSecurityAttributeType `json:"nicSecurity,omitempty"`
 	// A list of UUIDs.
-	SecurityGroups *[]string `json:"securityGroups,omitempty"`
-	Status         *string   `json:"status,omitempty"`
-	Type           *string   `json:"type,omitempty"`
+	SecurityGroups CreateNicPayloadGetSecurityGroupsAttributeType `json:"securityGroups,omitempty"`
+	Status         CreateNicPayloadGetStatusAttributeType         `json:"status,omitempty"`
+	Type           CreateNicPayloadGetTypeAttributeType           `json:"type,omitempty"`
 }
 
 // NewCreateNicPayload instantiates a new CreateNicPayload object
@@ -51,8 +320,6 @@ type CreateNicPayload struct {
 // will change when the set of required properties is changed
 func NewCreateNicPayload() *CreateNicPayload {
 	this := CreateNicPayload{}
-	var nicSecurity bool = true
-	this.NicSecurity = &nicSecurity
 	return &this
 }
 
@@ -67,461 +334,344 @@ func NewCreateNicPayloadWithDefaults() *CreateNicPayload {
 }
 
 // GetAllowedAddresses returns the AllowedAddresses field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetAllowedAddresses() *[]AllowedAddressesInner {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		var ret *[]AllowedAddressesInner
-		return ret
-	}
-	return o.AllowedAddresses
+func (o *CreateNicPayload) GetAllowedAddresses() (res CreateNicPayloadGetAllowedAddressesRetType) {
+	res, _ = o.GetAllowedAddressesOk()
+	return
 }
 
 // GetAllowedAddressesOk returns a tuple with the AllowedAddresses field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetAllowedAddressesOk() (*[]AllowedAddressesInner, bool) {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		return nil, false
-	}
-	return o.AllowedAddresses, true
+func (o *CreateNicPayload) GetAllowedAddressesOk() (ret CreateNicPayloadGetAllowedAddressesRetType, ok bool) {
+	return getCreateNicPayloadGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses)
 }
 
 // HasAllowedAddresses returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasAllowedAddresses() bool {
-	if o != nil && !IsNil(o.AllowedAddresses) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAllowedAddressesOk()
+	return ok
 }
 
 // SetAllowedAddresses gets a reference to the given []AllowedAddressesInner and assigns it to the AllowedAddresses field.
-func (o *CreateNicPayload) SetAllowedAddresses(v *[]AllowedAddressesInner) {
-	o.AllowedAddresses = v
+func (o *CreateNicPayload) SetAllowedAddresses(v CreateNicPayloadGetAllowedAddressesRetType) {
+	setCreateNicPayloadGetAllowedAddressesAttributeType(&o.AllowedAddresses, v)
 }
 
 // GetDevice returns the Device field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetDevice() *string {
-	if o == nil || IsNil(o.Device) {
-		var ret *string
-		return ret
-	}
-	return o.Device
+func (o *CreateNicPayload) GetDevice() (res CreateNicPayloadGetDeviceRetType) {
+	res, _ = o.GetDeviceOk()
+	return
 }
 
 // GetDeviceOk returns a tuple with the Device field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetDeviceOk() (*string, bool) {
-	if o == nil || IsNil(o.Device) {
-		return nil, false
-	}
-	return o.Device, true
+func (o *CreateNicPayload) GetDeviceOk() (ret CreateNicPayloadGetDeviceRetType, ok bool) {
+	return getCreateNicPayloadGetDeviceAttributeTypeOk(o.Device)
 }
 
 // HasDevice returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasDevice() bool {
-	if o != nil && !IsNil(o.Device) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDeviceOk()
+	return ok
 }
 
 // SetDevice gets a reference to the given string and assigns it to the Device field.
-func (o *CreateNicPayload) SetDevice(v *string) {
-	o.Device = v
+func (o *CreateNicPayload) SetDevice(v CreateNicPayloadGetDeviceRetType) {
+	setCreateNicPayloadGetDeviceAttributeType(&o.Device, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateNicPayload) GetId() (res CreateNicPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateNicPayload) GetIdOk() (ret CreateNicPayloadGetIdRetType, ok bool) {
+	return getCreateNicPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateNicPayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateNicPayload) SetId(v CreateNicPayloadGetIdRetType) {
+	setCreateNicPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetIpv4() *string {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *string
-		return ret
-	}
-	return o.Ipv4
+func (o *CreateNicPayload) GetIpv4() (res CreateNicPayloadGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetIpv4Ok() (*string, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *CreateNicPayload) GetIpv4Ok() (ret CreateNicPayloadGetIpv4RetType, ok bool) {
+	return getCreateNicPayloadGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given string and assigns it to the Ipv4 field.
-func (o *CreateNicPayload) SetIpv4(v *string) {
-	o.Ipv4 = v
+func (o *CreateNicPayload) SetIpv4(v CreateNicPayloadGetIpv4RetType) {
+	setCreateNicPayloadGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 // GetIpv6 returns the Ipv6 field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetIpv6() *string {
-	if o == nil || IsNil(o.Ipv6) {
-		var ret *string
-		return ret
-	}
-	return o.Ipv6
+func (o *CreateNicPayload) GetIpv6() (res CreateNicPayloadGetIpv6RetType) {
+	res, _ = o.GetIpv6Ok()
+	return
 }
 
 // GetIpv6Ok returns a tuple with the Ipv6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetIpv6Ok() (*string, bool) {
-	if o == nil || IsNil(o.Ipv6) {
-		return nil, false
-	}
-	return o.Ipv6, true
+func (o *CreateNicPayload) GetIpv6Ok() (ret CreateNicPayloadGetIpv6RetType, ok bool) {
+	return getCreateNicPayloadGetIpv6AttributeTypeOk(o.Ipv6)
 }
 
 // HasIpv6 returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasIpv6() bool {
-	if o != nil && !IsNil(o.Ipv6) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv6Ok()
+	return ok
 }
 
 // SetIpv6 gets a reference to the given string and assigns it to the Ipv6 field.
-func (o *CreateNicPayload) SetIpv6(v *string) {
-	o.Ipv6 = v
+func (o *CreateNicPayload) SetIpv6(v CreateNicPayloadGetIpv6RetType) {
+	setCreateNicPayloadGetIpv6AttributeType(&o.Ipv6, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateNicPayload) GetLabels() (res CreateNicPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateNicPayload) GetLabelsOk() (ret CreateNicPayloadGetLabelsRetType, ok bool) {
+	return getCreateNicPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateNicPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateNicPayload) SetLabels(v CreateNicPayloadGetLabelsRetType) {
+	setCreateNicPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetMac returns the Mac field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetMac() *string {
-	if o == nil || IsNil(o.Mac) {
-		var ret *string
-		return ret
-	}
-	return o.Mac
+func (o *CreateNicPayload) GetMac() (res CreateNicPayloadGetMacRetType) {
+	res, _ = o.GetMacOk()
+	return
 }
 
 // GetMacOk returns a tuple with the Mac field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetMacOk() (*string, bool) {
-	if o == nil || IsNil(o.Mac) {
-		return nil, false
-	}
-	return o.Mac, true
+func (o *CreateNicPayload) GetMacOk() (ret CreateNicPayloadGetMacRetType, ok bool) {
+	return getCreateNicPayloadGetMacAttributeTypeOk(o.Mac)
 }
 
 // HasMac returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasMac() bool {
-	if o != nil && !IsNil(o.Mac) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMacOk()
+	return ok
 }
 
 // SetMac gets a reference to the given string and assigns it to the Mac field.
-func (o *CreateNicPayload) SetMac(v *string) {
-	o.Mac = v
+func (o *CreateNicPayload) SetMac(v CreateNicPayloadGetMacRetType) {
+	setCreateNicPayloadGetMacAttributeType(&o.Mac, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *CreateNicPayload) GetName() (res CreateNicPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateNicPayload) GetNameOk() (ret CreateNicPayloadGetNameRetType, ok bool) {
+	return getCreateNicPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *CreateNicPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateNicPayload) SetName(v CreateNicPayloadGetNameRetType) {
+	setCreateNicPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetNetworkId returns the NetworkId field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetNetworkId() *string {
-	if o == nil || IsNil(o.NetworkId) {
-		var ret *string
-		return ret
-	}
-	return o.NetworkId
+func (o *CreateNicPayload) GetNetworkId() (res CreateNicPayloadGetNetworkIdRetType) {
+	res, _ = o.GetNetworkIdOk()
+	return
 }
 
 // GetNetworkIdOk returns a tuple with the NetworkId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetNetworkIdOk() (*string, bool) {
-	if o == nil || IsNil(o.NetworkId) {
-		return nil, false
-	}
-	return o.NetworkId, true
+func (o *CreateNicPayload) GetNetworkIdOk() (ret CreateNicPayloadGetNetworkIdRetType, ok bool) {
+	return getCreateNicPayloadGetNetworkIdAttributeTypeOk(o.NetworkId)
 }
 
 // HasNetworkId returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasNetworkId() bool {
-	if o != nil && !IsNil(o.NetworkId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkIdOk()
+	return ok
 }
 
 // SetNetworkId gets a reference to the given string and assigns it to the NetworkId field.
-func (o *CreateNicPayload) SetNetworkId(v *string) {
-	o.NetworkId = v
+func (o *CreateNicPayload) SetNetworkId(v CreateNicPayloadGetNetworkIdRetType) {
+	setCreateNicPayloadGetNetworkIdAttributeType(&o.NetworkId, v)
 }
 
 // GetNicSecurity returns the NicSecurity field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetNicSecurity() *bool {
-	if o == nil || IsNil(o.NicSecurity) {
-		var ret *bool
-		return ret
-	}
-	return o.NicSecurity
+func (o *CreateNicPayload) GetNicSecurity() (res CreateNicPayloadgetNicSecurityRetType) {
+	res, _ = o.GetNicSecurityOk()
+	return
 }
 
 // GetNicSecurityOk returns a tuple with the NicSecurity field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetNicSecurityOk() (*bool, bool) {
-	if o == nil || IsNil(o.NicSecurity) {
-		return nil, false
-	}
-	return o.NicSecurity, true
+func (o *CreateNicPayload) GetNicSecurityOk() (ret CreateNicPayloadgetNicSecurityRetType, ok bool) {
+	return getCreateNicPayloadgetNicSecurityAttributeTypeOk(o.NicSecurity)
 }
 
 // HasNicSecurity returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasNicSecurity() bool {
-	if o != nil && !IsNil(o.NicSecurity) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNicSecurityOk()
+	return ok
 }
 
 // SetNicSecurity gets a reference to the given bool and assigns it to the NicSecurity field.
-func (o *CreateNicPayload) SetNicSecurity(v *bool) {
-	o.NicSecurity = v
+func (o *CreateNicPayload) SetNicSecurity(v CreateNicPayloadgetNicSecurityRetType) {
+	setCreateNicPayloadgetNicSecurityAttributeType(&o.NicSecurity, v)
 }
 
 // GetSecurityGroups returns the SecurityGroups field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetSecurityGroups() *[]string {
-	if o == nil || IsNil(o.SecurityGroups) {
-		var ret *[]string
-		return ret
-	}
-	return o.SecurityGroups
+func (o *CreateNicPayload) GetSecurityGroups() (res CreateNicPayloadGetSecurityGroupsRetType) {
+	res, _ = o.GetSecurityGroupsOk()
+	return
 }
 
 // GetSecurityGroupsOk returns a tuple with the SecurityGroups field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetSecurityGroupsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.SecurityGroups) {
-		return nil, false
-	}
-	return o.SecurityGroups, true
+func (o *CreateNicPayload) GetSecurityGroupsOk() (ret CreateNicPayloadGetSecurityGroupsRetType, ok bool) {
+	return getCreateNicPayloadGetSecurityGroupsAttributeTypeOk(o.SecurityGroups)
 }
 
 // HasSecurityGroups returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasSecurityGroups() bool {
-	if o != nil && !IsNil(o.SecurityGroups) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupsOk()
+	return ok
 }
 
 // SetSecurityGroups gets a reference to the given []string and assigns it to the SecurityGroups field.
-func (o *CreateNicPayload) SetSecurityGroups(v *[]string) {
-	o.SecurityGroups = v
+func (o *CreateNicPayload) SetSecurityGroups(v CreateNicPayloadGetSecurityGroupsRetType) {
+	setCreateNicPayloadGetSecurityGroupsAttributeType(&o.SecurityGroups, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *CreateNicPayload) GetStatus() (res CreateNicPayloadGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *CreateNicPayload) GetStatusOk() (ret CreateNicPayloadGetStatusRetType, ok bool) {
+	return getCreateNicPayloadGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *CreateNicPayload) SetStatus(v *string) {
-	o.Status = v
+func (o *CreateNicPayload) SetStatus(v CreateNicPayloadGetStatusRetType) {
+	setCreateNicPayloadGetStatusAttributeType(&o.Status, v)
 }
 
 // GetType returns the Type field value if set, zero value otherwise.
-func (o *CreateNicPayload) GetType() *string {
-	if o == nil || IsNil(o.Type) {
-		var ret *string
-		return ret
-	}
-	return o.Type
+func (o *CreateNicPayload) GetType() (res CreateNicPayloadGetTypeRetType) {
+	res, _ = o.GetTypeOk()
+	return
 }
 
 // GetTypeOk returns a tuple with the Type field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateNicPayload) GetTypeOk() (*string, bool) {
-	if o == nil || IsNil(o.Type) {
-		return nil, false
-	}
-	return o.Type, true
+func (o *CreateNicPayload) GetTypeOk() (ret CreateNicPayloadGetTypeRetType, ok bool) {
+	return getCreateNicPayloadGetTypeAttributeTypeOk(o.Type)
 }
 
 // HasType returns a boolean if a field has been set.
 func (o *CreateNicPayload) HasType() bool {
-	if o != nil && !IsNil(o.Type) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetTypeOk()
+	return ok
 }
 
 // SetType gets a reference to the given string and assigns it to the Type field.
-func (o *CreateNicPayload) SetType(v *string) {
-	o.Type = v
+func (o *CreateNicPayload) SetType(v CreateNicPayloadGetTypeRetType) {
+	setCreateNicPayloadGetTypeAttributeType(&o.Type, v)
 }
 
 func (o CreateNicPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AllowedAddresses) {
-		toSerialize["allowedAddresses"] = o.AllowedAddresses
+	if val, ok := getCreateNicPayloadGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses); ok {
+		toSerialize["AllowedAddresses"] = val
 	}
-	if !IsNil(o.Device) {
-		toSerialize["device"] = o.Device
+	if val, ok := getCreateNicPayloadGetDeviceAttributeTypeOk(o.Device); ok {
+		toSerialize["Device"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateNicPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getCreateNicPayloadGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
-	if !IsNil(o.Ipv6) {
-		toSerialize["ipv6"] = o.Ipv6
+	if val, ok := getCreateNicPayloadGetIpv6AttributeTypeOk(o.Ipv6); ok {
+		toSerialize["Ipv6"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateNicPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Mac) {
-		toSerialize["mac"] = o.Mac
+	if val, ok := getCreateNicPayloadGetMacAttributeTypeOk(o.Mac); ok {
+		toSerialize["Mac"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getCreateNicPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.NetworkId) {
-		toSerialize["networkId"] = o.NetworkId
+	if val, ok := getCreateNicPayloadGetNetworkIdAttributeTypeOk(o.NetworkId); ok {
+		toSerialize["NetworkId"] = val
 	}
-	if !IsNil(o.NicSecurity) {
-		toSerialize["nicSecurity"] = o.NicSecurity
+	if val, ok := getCreateNicPayloadgetNicSecurityAttributeTypeOk(o.NicSecurity); ok {
+		toSerialize["NicSecurity"] = val
 	}
-	if !IsNil(o.SecurityGroups) {
-		toSerialize["securityGroups"] = o.SecurityGroups
+	if val, ok := getCreateNicPayloadGetSecurityGroupsAttributeTypeOk(o.SecurityGroups); ok {
+		toSerialize["SecurityGroups"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getCreateNicPayloadGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.Type) {
-		toSerialize["type"] = o.Type
+	if val, ok := getCreateNicPayloadGetTypeAttributeTypeOk(o.Type); ok {
+		toSerialize["Type"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_public_ip_payload.go b/services/iaas/model_create_public_ip_payload.go
index 132f20122..fab8e8b10 100644
--- a/services/iaas/model_create_public_ip_payload.go
+++ b/services/iaas/model_create_public_ip_payload.go
@@ -17,16 +17,103 @@ import (
 // checks if the CreatePublicIPPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreatePublicIPPayload{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreatePublicIPPayloadGetIdAttributeType = *string
+
+func getCreatePublicIPPayloadGetIdAttributeTypeOk(arg CreatePublicIPPayloadGetIdAttributeType) (ret CreatePublicIPPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreatePublicIPPayloadGetIdAttributeType(arg *CreatePublicIPPayloadGetIdAttributeType, val CreatePublicIPPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreatePublicIPPayloadGetIdArgType = string
+type CreatePublicIPPayloadGetIdRetType = string
+
+/*
+	types and functions for ip
+*/
+
+// isNotNullableString
+type CreatePublicIPPayloadGetIpAttributeType = *string
+
+func getCreatePublicIPPayloadGetIpAttributeTypeOk(arg CreatePublicIPPayloadGetIpAttributeType) (ret CreatePublicIPPayloadGetIpRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreatePublicIPPayloadGetIpAttributeType(arg *CreatePublicIPPayloadGetIpAttributeType, val CreatePublicIPPayloadGetIpRetType) {
+	*arg = &val
+}
+
+type CreatePublicIPPayloadGetIpArgType = string
+type CreatePublicIPPayloadGetIpRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreatePublicIPPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreatePublicIPPayloadGetLabelsArgType = map[string]interface{}
+type CreatePublicIPPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreatePublicIPPayloadGetLabelsAttributeTypeOk(arg CreatePublicIPPayloadGetLabelsAttributeType) (ret CreatePublicIPPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreatePublicIPPayloadGetLabelsAttributeType(arg *CreatePublicIPPayloadGetLabelsAttributeType, val CreatePublicIPPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkInterface
+*/
+
+// isNullableString
+type CreatePublicIPPayloadGetNetworkInterfaceAttributeType = *NullableString
+
+func getCreatePublicIPPayloadGetNetworkInterfaceAttributeTypeOk(arg CreatePublicIPPayloadGetNetworkInterfaceAttributeType) (ret CreatePublicIPPayloadGetNetworkInterfaceRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setCreatePublicIPPayloadGetNetworkInterfaceAttributeType(arg *CreatePublicIPPayloadGetNetworkInterfaceAttributeType, val CreatePublicIPPayloadGetNetworkInterfaceRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type CreatePublicIPPayloadGetNetworkInterfaceArgType = *string
+type CreatePublicIPPayloadGetNetworkInterfaceRetType = *string
+
 // CreatePublicIPPayload Object that represents a public IP.
 type CreatePublicIPPayload struct {
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreatePublicIPPayloadGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents an IP address.
-	Ip *string `json:"ip,omitempty"`
+	Ip CreatePublicIPPayloadGetIpAttributeType `json:"ip,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreatePublicIPPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// Universally Unique Identifier (UUID).
-	NetworkInterface *NullableString `json:"networkInterface,omitempty"`
+	NetworkInterface CreatePublicIPPayloadGetNetworkInterfaceAttributeType `json:"networkInterface,omitempty"`
 }
 
 // NewCreatePublicIPPayload instantiates a new CreatePublicIPPayload object
@@ -47,166 +134,121 @@ func NewCreatePublicIPPayloadWithDefaults() *CreatePublicIPPayload {
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreatePublicIPPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreatePublicIPPayload) GetId() (res CreatePublicIPPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreatePublicIPPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreatePublicIPPayload) GetIdOk() (ret CreatePublicIPPayloadGetIdRetType, ok bool) {
+	return getCreatePublicIPPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreatePublicIPPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreatePublicIPPayload) SetId(v *string) {
-	o.Id = v
+func (o *CreatePublicIPPayload) SetId(v CreatePublicIPPayloadGetIdRetType) {
+	setCreatePublicIPPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetIp returns the Ip field value if set, zero value otherwise.
-func (o *CreatePublicIPPayload) GetIp() *string {
-	if o == nil || IsNil(o.Ip) {
-		var ret *string
-		return ret
-	}
-	return o.Ip
+func (o *CreatePublicIPPayload) GetIp() (res CreatePublicIPPayloadGetIpRetType) {
+	res, _ = o.GetIpOk()
+	return
 }
 
 // GetIpOk returns a tuple with the Ip field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreatePublicIPPayload) GetIpOk() (*string, bool) {
-	if o == nil || IsNil(o.Ip) {
-		return nil, false
-	}
-	return o.Ip, true
+func (o *CreatePublicIPPayload) GetIpOk() (ret CreatePublicIPPayloadGetIpRetType, ok bool) {
+	return getCreatePublicIPPayloadGetIpAttributeTypeOk(o.Ip)
 }
 
 // HasIp returns a boolean if a field has been set.
 func (o *CreatePublicIPPayload) HasIp() bool {
-	if o != nil && !IsNil(o.Ip) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpOk()
+	return ok
 }
 
 // SetIp gets a reference to the given string and assigns it to the Ip field.
-func (o *CreatePublicIPPayload) SetIp(v *string) {
-	o.Ip = v
+func (o *CreatePublicIPPayload) SetIp(v CreatePublicIPPayloadGetIpRetType) {
+	setCreatePublicIPPayloadGetIpAttributeType(&o.Ip, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreatePublicIPPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreatePublicIPPayload) GetLabels() (res CreatePublicIPPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreatePublicIPPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreatePublicIPPayload) GetLabelsOk() (ret CreatePublicIPPayloadGetLabelsRetType, ok bool) {
+	return getCreatePublicIPPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreatePublicIPPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreatePublicIPPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreatePublicIPPayload) SetLabels(v CreatePublicIPPayloadGetLabelsRetType) {
+	setCreatePublicIPPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetNetworkInterface returns the NetworkInterface field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *CreatePublicIPPayload) GetNetworkInterface() *string {
-	if o == nil || IsNil(o.NetworkInterface) || IsNil(o.NetworkInterface.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.NetworkInterface.Get()
+func (o *CreatePublicIPPayload) GetNetworkInterface() (res CreatePublicIPPayloadGetNetworkInterfaceRetType) {
+	res, _ = o.GetNetworkInterfaceOk()
+	return
 }
 
 // GetNetworkInterfaceOk returns a tuple with the NetworkInterface field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *CreatePublicIPPayload) GetNetworkInterfaceOk() (*string, bool) {
-	if o == nil || IsNil(o.NetworkInterface) {
-		return nil, false
-	}
-	return o.NetworkInterface.Get(), o.NetworkInterface.IsSet()
+func (o *CreatePublicIPPayload) GetNetworkInterfaceOk() (ret CreatePublicIPPayloadGetNetworkInterfaceRetType, ok bool) {
+	return getCreatePublicIPPayloadGetNetworkInterfaceAttributeTypeOk(o.NetworkInterface)
 }
 
 // HasNetworkInterface returns a boolean if a field has been set.
 func (o *CreatePublicIPPayload) HasNetworkInterface() bool {
-	if o != nil && !IsNil(o.NetworkInterface) && o.NetworkInterface.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkInterfaceOk()
+	return ok
 }
 
 // SetNetworkInterface gets a reference to the given string and assigns it to the NetworkInterface field.
-func (o *CreatePublicIPPayload) SetNetworkInterface(v *string) {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Set(v)
+func (o *CreatePublicIPPayload) SetNetworkInterface(v CreatePublicIPPayloadGetNetworkInterfaceRetType) {
+	setCreatePublicIPPayloadGetNetworkInterfaceAttributeType(&o.NetworkInterface, v)
 }
 
 // SetNetworkInterfaceNil sets the value for NetworkInterface to be an explicit nil
 func (o *CreatePublicIPPayload) SetNetworkInterfaceNil() {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Set(nil)
+	o.NetworkInterface = nil
 }
 
 // UnsetNetworkInterface ensures that no value is present for NetworkInterface, not even an explicit nil
 func (o *CreatePublicIPPayload) UnsetNetworkInterface() {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Unset()
+	o.NetworkInterface = nil
 }
 
 func (o CreatePublicIPPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreatePublicIPPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Ip) {
-		toSerialize["ip"] = o.Ip
+	if val, ok := getCreatePublicIPPayloadGetIpAttributeTypeOk(o.Ip); ok {
+		toSerialize["Ip"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreatePublicIPPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if o.NetworkInterface.IsSet() {
-		toSerialize["networkInterface"] = o.NetworkInterface.Get()
+	if val, ok := getCreatePublicIPPayloadGetNetworkInterfaceAttributeTypeOk(o.NetworkInterface); ok {
+		toSerialize["NetworkInterface"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_security_group_payload.go b/services/iaas/model_create_security_group_payload.go
index ff3ffb293..b64e02ae5 100644
--- a/services/iaas/model_create_security_group_payload.go
+++ b/services/iaas/model_create_security_group_payload.go
@@ -18,25 +18,188 @@ import (
 // checks if the CreateSecurityGroupPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateSecurityGroupPayload{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type CreateSecurityGroupPayloadGetCreatedAtAttributeType = *time.Time
+type CreateSecurityGroupPayloadGetCreatedAtArgType = time.Time
+type CreateSecurityGroupPayloadGetCreatedAtRetType = time.Time
+
+func getCreateSecurityGroupPayloadGetCreatedAtAttributeTypeOk(arg CreateSecurityGroupPayloadGetCreatedAtAttributeType) (ret CreateSecurityGroupPayloadGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadGetCreatedAtAttributeType(arg *CreateSecurityGroupPayloadGetCreatedAtAttributeType, val CreateSecurityGroupPayloadGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type CreateSecurityGroupPayloadGetDescriptionAttributeType = *string
+
+func getCreateSecurityGroupPayloadGetDescriptionAttributeTypeOk(arg CreateSecurityGroupPayloadGetDescriptionAttributeType) (ret CreateSecurityGroupPayloadGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadGetDescriptionAttributeType(arg *CreateSecurityGroupPayloadGetDescriptionAttributeType, val CreateSecurityGroupPayloadGetDescriptionRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupPayloadGetDescriptionArgType = string
+type CreateSecurityGroupPayloadGetDescriptionRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateSecurityGroupPayloadGetIdAttributeType = *string
+
+func getCreateSecurityGroupPayloadGetIdAttributeTypeOk(arg CreateSecurityGroupPayloadGetIdAttributeType) (ret CreateSecurityGroupPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadGetIdAttributeType(arg *CreateSecurityGroupPayloadGetIdAttributeType, val CreateSecurityGroupPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupPayloadGetIdArgType = string
+type CreateSecurityGroupPayloadGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateSecurityGroupPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateSecurityGroupPayloadGetLabelsArgType = map[string]interface{}
+type CreateSecurityGroupPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateSecurityGroupPayloadGetLabelsAttributeTypeOk(arg CreateSecurityGroupPayloadGetLabelsAttributeType) (ret CreateSecurityGroupPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadGetLabelsAttributeType(arg *CreateSecurityGroupPayloadGetLabelsAttributeType, val CreateSecurityGroupPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateSecurityGroupPayloadGetNameAttributeType = *string
+
+func getCreateSecurityGroupPayloadGetNameAttributeTypeOk(arg CreateSecurityGroupPayloadGetNameAttributeType) (ret CreateSecurityGroupPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadGetNameAttributeType(arg *CreateSecurityGroupPayloadGetNameAttributeType, val CreateSecurityGroupPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupPayloadGetNameArgType = string
+type CreateSecurityGroupPayloadGetNameRetType = string
+
+/*
+	types and functions for rules
+*/
+
+// isArray
+type CreateSecurityGroupPayloadGetRulesAttributeType = *[]SecurityGroupRule
+type CreateSecurityGroupPayloadGetRulesArgType = []SecurityGroupRule
+type CreateSecurityGroupPayloadGetRulesRetType = []SecurityGroupRule
+
+func getCreateSecurityGroupPayloadGetRulesAttributeTypeOk(arg CreateSecurityGroupPayloadGetRulesAttributeType) (ret CreateSecurityGroupPayloadGetRulesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadGetRulesAttributeType(arg *CreateSecurityGroupPayloadGetRulesAttributeType, val CreateSecurityGroupPayloadGetRulesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for stateful
+*/
+
+// isBoolean
+type CreateSecurityGroupPayloadgetStatefulAttributeType = *bool
+type CreateSecurityGroupPayloadgetStatefulArgType = bool
+type CreateSecurityGroupPayloadgetStatefulRetType = bool
+
+func getCreateSecurityGroupPayloadgetStatefulAttributeTypeOk(arg CreateSecurityGroupPayloadgetStatefulAttributeType) (ret CreateSecurityGroupPayloadgetStatefulRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadgetStatefulAttributeType(arg *CreateSecurityGroupPayloadgetStatefulAttributeType, val CreateSecurityGroupPayloadgetStatefulRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type CreateSecurityGroupPayloadGetUpdatedAtAttributeType = *time.Time
+type CreateSecurityGroupPayloadGetUpdatedAtArgType = time.Time
+type CreateSecurityGroupPayloadGetUpdatedAtRetType = time.Time
+
+func getCreateSecurityGroupPayloadGetUpdatedAtAttributeTypeOk(arg CreateSecurityGroupPayloadGetUpdatedAtAttributeType) (ret CreateSecurityGroupPayloadGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupPayloadGetUpdatedAtAttributeType(arg *CreateSecurityGroupPayloadGetUpdatedAtAttributeType, val CreateSecurityGroupPayloadGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // CreateSecurityGroupPayload Object that represents a security group.
 type CreateSecurityGroupPayload struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt CreateSecurityGroupPayloadGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description CreateSecurityGroupPayloadGetDescriptionAttributeType `json:"description,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateSecurityGroupPayloadGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateSecurityGroupPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name CreateSecurityGroupPayloadGetNameAttributeType `json:"name"`
 	// A list containing security group rule objects.
-	Rules *[]SecurityGroupRule `json:"rules,omitempty"`
+	Rules CreateSecurityGroupPayloadGetRulesAttributeType `json:"rules,omitempty"`
 	// Shows if a security group is stateful or stateless. You can only have one type of security groups per network interface/server.
-	Stateful *bool `json:"stateful,omitempty"`
+	Stateful CreateSecurityGroupPayloadgetStatefulAttributeType `json:"stateful,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt CreateSecurityGroupPayloadGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _CreateSecurityGroupPayload CreateSecurityGroupPayload
@@ -45,11 +208,9 @@ type _CreateSecurityGroupPayload CreateSecurityGroupPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateSecurityGroupPayload(name *string) *CreateSecurityGroupPayload {
+func NewCreateSecurityGroupPayload(name CreateSecurityGroupPayloadGetNameArgType) *CreateSecurityGroupPayload {
 	this := CreateSecurityGroupPayload{}
-	this.Name = name
-	var stateful bool = true
-	this.Stateful = &stateful
+	setCreateSecurityGroupPayloadGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -64,276 +225,208 @@ func NewCreateSecurityGroupPayloadWithDefaults() *CreateSecurityGroupPayload {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *CreateSecurityGroupPayload) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *CreateSecurityGroupPayload) GetCreatedAt() (res CreateSecurityGroupPayloadGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *CreateSecurityGroupPayload) GetCreatedAtOk() (ret CreateSecurityGroupPayloadGetCreatedAtRetType, ok bool) {
+	return getCreateSecurityGroupPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *CreateSecurityGroupPayload) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *CreateSecurityGroupPayload) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *CreateSecurityGroupPayload) SetCreatedAt(v CreateSecurityGroupPayloadGetCreatedAtRetType) {
+	setCreateSecurityGroupPayloadGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *CreateSecurityGroupPayload) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *CreateSecurityGroupPayload) GetDescription() (res CreateSecurityGroupPayloadGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *CreateSecurityGroupPayload) GetDescriptionOk() (ret CreateSecurityGroupPayloadGetDescriptionRetType, ok bool) {
+	return getCreateSecurityGroupPayloadGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *CreateSecurityGroupPayload) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *CreateSecurityGroupPayload) SetDescription(v *string) {
-	o.Description = v
+func (o *CreateSecurityGroupPayload) SetDescription(v CreateSecurityGroupPayloadGetDescriptionRetType) {
+	setCreateSecurityGroupPayloadGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateSecurityGroupPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateSecurityGroupPayload) GetId() (res CreateSecurityGroupPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateSecurityGroupPayload) GetIdOk() (ret CreateSecurityGroupPayloadGetIdRetType, ok bool) {
+	return getCreateSecurityGroupPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateSecurityGroupPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateSecurityGroupPayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateSecurityGroupPayload) SetId(v CreateSecurityGroupPayloadGetIdRetType) {
+	setCreateSecurityGroupPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateSecurityGroupPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateSecurityGroupPayload) GetLabels() (res CreateSecurityGroupPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateSecurityGroupPayload) GetLabelsOk() (ret CreateSecurityGroupPayloadGetLabelsRetType, ok bool) {
+	return getCreateSecurityGroupPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateSecurityGroupPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateSecurityGroupPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateSecurityGroupPayload) SetLabels(v CreateSecurityGroupPayloadGetLabelsRetType) {
+	setCreateSecurityGroupPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value
-func (o *CreateSecurityGroupPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *CreateSecurityGroupPayload) GetName() (ret CreateSecurityGroupPayloadGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateSecurityGroupPayload) GetNameOk() (ret CreateSecurityGroupPayloadGetNameRetType, ok bool) {
+	return getCreateSecurityGroupPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *CreateSecurityGroupPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateSecurityGroupPayload) SetName(v CreateSecurityGroupPayloadGetNameRetType) {
+	setCreateSecurityGroupPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetRules returns the Rules field value if set, zero value otherwise.
-func (o *CreateSecurityGroupPayload) GetRules() *[]SecurityGroupRule {
-	if o == nil || IsNil(o.Rules) {
-		var ret *[]SecurityGroupRule
-		return ret
-	}
-	return o.Rules
+func (o *CreateSecurityGroupPayload) GetRules() (res CreateSecurityGroupPayloadGetRulesRetType) {
+	res, _ = o.GetRulesOk()
+	return
 }
 
 // GetRulesOk returns a tuple with the Rules field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetRulesOk() (*[]SecurityGroupRule, bool) {
-	if o == nil || IsNil(o.Rules) {
-		return nil, false
-	}
-	return o.Rules, true
+func (o *CreateSecurityGroupPayload) GetRulesOk() (ret CreateSecurityGroupPayloadGetRulesRetType, ok bool) {
+	return getCreateSecurityGroupPayloadGetRulesAttributeTypeOk(o.Rules)
 }
 
 // HasRules returns a boolean if a field has been set.
 func (o *CreateSecurityGroupPayload) HasRules() bool {
-	if o != nil && !IsNil(o.Rules) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRulesOk()
+	return ok
 }
 
 // SetRules gets a reference to the given []SecurityGroupRule and assigns it to the Rules field.
-func (o *CreateSecurityGroupPayload) SetRules(v *[]SecurityGroupRule) {
-	o.Rules = v
+func (o *CreateSecurityGroupPayload) SetRules(v CreateSecurityGroupPayloadGetRulesRetType) {
+	setCreateSecurityGroupPayloadGetRulesAttributeType(&o.Rules, v)
 }
 
 // GetStateful returns the Stateful field value if set, zero value otherwise.
-func (o *CreateSecurityGroupPayload) GetStateful() *bool {
-	if o == nil || IsNil(o.Stateful) {
-		var ret *bool
-		return ret
-	}
-	return o.Stateful
+func (o *CreateSecurityGroupPayload) GetStateful() (res CreateSecurityGroupPayloadgetStatefulRetType) {
+	res, _ = o.GetStatefulOk()
+	return
 }
 
 // GetStatefulOk returns a tuple with the Stateful field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetStatefulOk() (*bool, bool) {
-	if o == nil || IsNil(o.Stateful) {
-		return nil, false
-	}
-	return o.Stateful, true
+func (o *CreateSecurityGroupPayload) GetStatefulOk() (ret CreateSecurityGroupPayloadgetStatefulRetType, ok bool) {
+	return getCreateSecurityGroupPayloadgetStatefulAttributeTypeOk(o.Stateful)
 }
 
 // HasStateful returns a boolean if a field has been set.
 func (o *CreateSecurityGroupPayload) HasStateful() bool {
-	if o != nil && !IsNil(o.Stateful) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatefulOk()
+	return ok
 }
 
 // SetStateful gets a reference to the given bool and assigns it to the Stateful field.
-func (o *CreateSecurityGroupPayload) SetStateful(v *bool) {
-	o.Stateful = v
+func (o *CreateSecurityGroupPayload) SetStateful(v CreateSecurityGroupPayloadgetStatefulRetType) {
+	setCreateSecurityGroupPayloadgetStatefulAttributeType(&o.Stateful, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *CreateSecurityGroupPayload) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *CreateSecurityGroupPayload) GetUpdatedAt() (res CreateSecurityGroupPayloadGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupPayload) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *CreateSecurityGroupPayload) GetUpdatedAtOk() (ret CreateSecurityGroupPayloadGetUpdatedAtRetType, ok bool) {
+	return getCreateSecurityGroupPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *CreateSecurityGroupPayload) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *CreateSecurityGroupPayload) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *CreateSecurityGroupPayload) SetUpdatedAt(v CreateSecurityGroupPayloadGetUpdatedAtRetType) {
+	setCreateSecurityGroupPayloadGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o CreateSecurityGroupPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getCreateSecurityGroupPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getCreateSecurityGroupPayloadGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
 	}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getCreateSecurityGroupPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateSecurityGroupPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateSecurityGroupPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Rules) {
-		toSerialize["rules"] = o.Rules
+	if val, ok := getCreateSecurityGroupPayloadGetRulesAttributeTypeOk(o.Rules); ok {
+		toSerialize["Rules"] = val
 	}
-	if !IsNil(o.Stateful) {
-		toSerialize["stateful"] = o.Stateful
+	if val, ok := getCreateSecurityGroupPayloadgetStatefulAttributeTypeOk(o.Stateful); ok {
+		toSerialize["Stateful"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getCreateSecurityGroupPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_security_group_rule_payload.go b/services/iaas/model_create_security_group_rule_payload.go
index a9ef31b46..060864813 100644
--- a/services/iaas/model_create_security_group_rule_payload.go
+++ b/services/iaas/model_create_security_group_rule_payload.go
@@ -17,26 +17,233 @@ import (
 // checks if the CreateSecurityGroupRulePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateSecurityGroupRulePayload{}
 
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type CreateSecurityGroupRulePayloadGetDescriptionAttributeType = *string
+
+func getCreateSecurityGroupRulePayloadGetDescriptionAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetDescriptionAttributeType) (ret CreateSecurityGroupRulePayloadGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetDescriptionAttributeType(arg *CreateSecurityGroupRulePayloadGetDescriptionAttributeType, val CreateSecurityGroupRulePayloadGetDescriptionRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupRulePayloadGetDescriptionArgType = string
+type CreateSecurityGroupRulePayloadGetDescriptionRetType = string
+
+/*
+	types and functions for direction
+*/
+
+// isNotNullableString
+type CreateSecurityGroupRulePayloadGetDirectionAttributeType = *string
+
+func getCreateSecurityGroupRulePayloadGetDirectionAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetDirectionAttributeType) (ret CreateSecurityGroupRulePayloadGetDirectionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetDirectionAttributeType(arg *CreateSecurityGroupRulePayloadGetDirectionAttributeType, val CreateSecurityGroupRulePayloadGetDirectionRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupRulePayloadGetDirectionArgType = string
+type CreateSecurityGroupRulePayloadGetDirectionRetType = string
+
+/*
+	types and functions for ethertype
+*/
+
+// isNotNullableString
+type CreateSecurityGroupRulePayloadGetEthertypeAttributeType = *string
+
+func getCreateSecurityGroupRulePayloadGetEthertypeAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetEthertypeAttributeType) (ret CreateSecurityGroupRulePayloadGetEthertypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetEthertypeAttributeType(arg *CreateSecurityGroupRulePayloadGetEthertypeAttributeType, val CreateSecurityGroupRulePayloadGetEthertypeRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupRulePayloadGetEthertypeArgType = string
+type CreateSecurityGroupRulePayloadGetEthertypeRetType = string
+
+/*
+	types and functions for icmpParameters
+*/
+
+// isModel
+type CreateSecurityGroupRulePayloadGetIcmpParametersAttributeType = *ICMPParameters
+type CreateSecurityGroupRulePayloadGetIcmpParametersArgType = ICMPParameters
+type CreateSecurityGroupRulePayloadGetIcmpParametersRetType = ICMPParameters
+
+func getCreateSecurityGroupRulePayloadGetIcmpParametersAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetIcmpParametersAttributeType) (ret CreateSecurityGroupRulePayloadGetIcmpParametersRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetIcmpParametersAttributeType(arg *CreateSecurityGroupRulePayloadGetIcmpParametersAttributeType, val CreateSecurityGroupRulePayloadGetIcmpParametersRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateSecurityGroupRulePayloadGetIdAttributeType = *string
+
+func getCreateSecurityGroupRulePayloadGetIdAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetIdAttributeType) (ret CreateSecurityGroupRulePayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetIdAttributeType(arg *CreateSecurityGroupRulePayloadGetIdAttributeType, val CreateSecurityGroupRulePayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupRulePayloadGetIdArgType = string
+type CreateSecurityGroupRulePayloadGetIdRetType = string
+
+/*
+	types and functions for ipRange
+*/
+
+// isNotNullableString
+type CreateSecurityGroupRulePayloadGetIpRangeAttributeType = *string
+
+func getCreateSecurityGroupRulePayloadGetIpRangeAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetIpRangeAttributeType) (ret CreateSecurityGroupRulePayloadGetIpRangeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetIpRangeAttributeType(arg *CreateSecurityGroupRulePayloadGetIpRangeAttributeType, val CreateSecurityGroupRulePayloadGetIpRangeRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupRulePayloadGetIpRangeArgType = string
+type CreateSecurityGroupRulePayloadGetIpRangeRetType = string
+
+/*
+	types and functions for portRange
+*/
+
+// isModel
+type CreateSecurityGroupRulePayloadGetPortRangeAttributeType = *PortRange
+type CreateSecurityGroupRulePayloadGetPortRangeArgType = PortRange
+type CreateSecurityGroupRulePayloadGetPortRangeRetType = PortRange
+
+func getCreateSecurityGroupRulePayloadGetPortRangeAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetPortRangeAttributeType) (ret CreateSecurityGroupRulePayloadGetPortRangeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetPortRangeAttributeType(arg *CreateSecurityGroupRulePayloadGetPortRangeAttributeType, val CreateSecurityGroupRulePayloadGetPortRangeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for remoteSecurityGroupId
+*/
+
+// isNotNullableString
+type CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeType = *string
+
+func getCreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeType) (ret CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeType(arg *CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeType, val CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdArgType = string
+type CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdRetType = string
+
+/*
+	types and functions for securityGroupId
+*/
+
+// isNotNullableString
+type CreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeType = *string
+
+func getCreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeType) (ret CreateSecurityGroupRulePayloadGetSecurityGroupIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeType(arg *CreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeType, val CreateSecurityGroupRulePayloadGetSecurityGroupIdRetType) {
+	*arg = &val
+}
+
+type CreateSecurityGroupRulePayloadGetSecurityGroupIdArgType = string
+type CreateSecurityGroupRulePayloadGetSecurityGroupIdRetType = string
+
+/*
+	types and functions for protocol
+*/
+
+// isModel
+type CreateSecurityGroupRulePayloadGetProtocolAttributeType = *CreateProtocol
+type CreateSecurityGroupRulePayloadGetProtocolArgType = CreateProtocol
+type CreateSecurityGroupRulePayloadGetProtocolRetType = CreateProtocol
+
+func getCreateSecurityGroupRulePayloadGetProtocolAttributeTypeOk(arg CreateSecurityGroupRulePayloadGetProtocolAttributeType) (ret CreateSecurityGroupRulePayloadGetProtocolRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRulePayloadGetProtocolAttributeType(arg *CreateSecurityGroupRulePayloadGetProtocolAttributeType, val CreateSecurityGroupRulePayloadGetProtocolRetType) {
+	*arg = &val
+}
+
 // CreateSecurityGroupRulePayload Object that represents a request body for security group rule creation.
 type CreateSecurityGroupRulePayload struct {
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description CreateSecurityGroupRulePayloadGetDescriptionAttributeType `json:"description,omitempty"`
 	// The direction of the traffic which the rule should match.
 	// REQUIRED
-	Direction *string `json:"direction"`
+	Direction CreateSecurityGroupRulePayloadGetDirectionAttributeType `json:"direction"`
 	// The ethertype which the rule should match.
-	Ethertype      *string         `json:"ethertype,omitempty"`
-	IcmpParameters *ICMPParameters `json:"icmpParameters,omitempty"`
+	Ethertype      CreateSecurityGroupRulePayloadGetEthertypeAttributeType      `json:"ethertype,omitempty"`
+	IcmpParameters CreateSecurityGroupRulePayloadGetIcmpParametersAttributeType `json:"icmpParameters,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateSecurityGroupRulePayloadGetIdAttributeType `json:"id,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
-	IpRange   *string    `json:"ipRange,omitempty"`
-	PortRange *PortRange `json:"portRange,omitempty"`
+	IpRange   CreateSecurityGroupRulePayloadGetIpRangeAttributeType   `json:"ipRange,omitempty"`
+	PortRange CreateSecurityGroupRulePayloadGetPortRangeAttributeType `json:"portRange,omitempty"`
 	// Universally Unique Identifier (UUID).
-	RemoteSecurityGroupId *string `json:"remoteSecurityGroupId,omitempty"`
+	RemoteSecurityGroupId CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeType `json:"remoteSecurityGroupId,omitempty"`
 	// Universally Unique Identifier (UUID).
-	SecurityGroupId *string         `json:"securityGroupId,omitempty"`
-	Protocol        *CreateProtocol `json:"protocol,omitempty"`
+	SecurityGroupId CreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeType `json:"securityGroupId,omitempty"`
+	Protocol        CreateSecurityGroupRulePayloadGetProtocolAttributeType        `json:"protocol,omitempty"`
 }
 
 type _CreateSecurityGroupRulePayload CreateSecurityGroupRulePayload
@@ -45,11 +252,9 @@ type _CreateSecurityGroupRulePayload CreateSecurityGroupRulePayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateSecurityGroupRulePayload(direction *string) *CreateSecurityGroupRulePayload {
+func NewCreateSecurityGroupRulePayload(direction CreateSecurityGroupRulePayloadGetDirectionArgType) *CreateSecurityGroupRulePayload {
 	this := CreateSecurityGroupRulePayload{}
-	this.Direction = direction
-	var ethertype string = "IPv4"
-	this.Ethertype = &ethertype
+	setCreateSecurityGroupRulePayloadGetDirectionAttributeType(&this.Direction, direction)
 	return &this
 }
 
@@ -64,346 +269,260 @@ func NewCreateSecurityGroupRulePayloadWithDefaults() *CreateSecurityGroupRulePay
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *CreateSecurityGroupRulePayload) GetDescription() (res CreateSecurityGroupRulePayloadGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *CreateSecurityGroupRulePayload) GetDescriptionOk() (ret CreateSecurityGroupRulePayloadGetDescriptionRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *CreateSecurityGroupRulePayload) SetDescription(v *string) {
-	o.Description = v
+func (o *CreateSecurityGroupRulePayload) SetDescription(v CreateSecurityGroupRulePayloadGetDescriptionRetType) {
+	setCreateSecurityGroupRulePayloadGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetDirection returns the Direction field value
-func (o *CreateSecurityGroupRulePayload) GetDirection() *string {
-	if o == nil || IsNil(o.Direction) {
-		var ret *string
-		return ret
-	}
-
-	return o.Direction
+func (o *CreateSecurityGroupRulePayload) GetDirection() (ret CreateSecurityGroupRulePayloadGetDirectionRetType) {
+	ret, _ = o.GetDirectionOk()
+	return ret
 }
 
 // GetDirectionOk returns a tuple with the Direction field value
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetDirectionOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Direction, true
+func (o *CreateSecurityGroupRulePayload) GetDirectionOk() (ret CreateSecurityGroupRulePayloadGetDirectionRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetDirectionAttributeTypeOk(o.Direction)
 }
 
 // SetDirection sets field value
-func (o *CreateSecurityGroupRulePayload) SetDirection(v *string) {
-	o.Direction = v
+func (o *CreateSecurityGroupRulePayload) SetDirection(v CreateSecurityGroupRulePayloadGetDirectionRetType) {
+	setCreateSecurityGroupRulePayloadGetDirectionAttributeType(&o.Direction, v)
 }
 
 // GetEthertype returns the Ethertype field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetEthertype() *string {
-	if o == nil || IsNil(o.Ethertype) {
-		var ret *string
-		return ret
-	}
-	return o.Ethertype
+func (o *CreateSecurityGroupRulePayload) GetEthertype() (res CreateSecurityGroupRulePayloadGetEthertypeRetType) {
+	res, _ = o.GetEthertypeOk()
+	return
 }
 
 // GetEthertypeOk returns a tuple with the Ethertype field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetEthertypeOk() (*string, bool) {
-	if o == nil || IsNil(o.Ethertype) {
-		return nil, false
-	}
-	return o.Ethertype, true
+func (o *CreateSecurityGroupRulePayload) GetEthertypeOk() (ret CreateSecurityGroupRulePayloadGetEthertypeRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetEthertypeAttributeTypeOk(o.Ethertype)
 }
 
 // HasEthertype returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasEthertype() bool {
-	if o != nil && !IsNil(o.Ethertype) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetEthertypeOk()
+	return ok
 }
 
 // SetEthertype gets a reference to the given string and assigns it to the Ethertype field.
-func (o *CreateSecurityGroupRulePayload) SetEthertype(v *string) {
-	o.Ethertype = v
+func (o *CreateSecurityGroupRulePayload) SetEthertype(v CreateSecurityGroupRulePayloadGetEthertypeRetType) {
+	setCreateSecurityGroupRulePayloadGetEthertypeAttributeType(&o.Ethertype, v)
 }
 
 // GetIcmpParameters returns the IcmpParameters field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetIcmpParameters() *ICMPParameters {
-	if o == nil || IsNil(o.IcmpParameters) {
-		var ret *ICMPParameters
-		return ret
-	}
-	return o.IcmpParameters
+func (o *CreateSecurityGroupRulePayload) GetIcmpParameters() (res CreateSecurityGroupRulePayloadGetIcmpParametersRetType) {
+	res, _ = o.GetIcmpParametersOk()
+	return
 }
 
 // GetIcmpParametersOk returns a tuple with the IcmpParameters field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetIcmpParametersOk() (*ICMPParameters, bool) {
-	if o == nil || IsNil(o.IcmpParameters) {
-		return nil, false
-	}
-	return o.IcmpParameters, true
+func (o *CreateSecurityGroupRulePayload) GetIcmpParametersOk() (ret CreateSecurityGroupRulePayloadGetIcmpParametersRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetIcmpParametersAttributeTypeOk(o.IcmpParameters)
 }
 
 // HasIcmpParameters returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasIcmpParameters() bool {
-	if o != nil && !IsNil(o.IcmpParameters) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIcmpParametersOk()
+	return ok
 }
 
 // SetIcmpParameters gets a reference to the given ICMPParameters and assigns it to the IcmpParameters field.
-func (o *CreateSecurityGroupRulePayload) SetIcmpParameters(v *ICMPParameters) {
-	o.IcmpParameters = v
+func (o *CreateSecurityGroupRulePayload) SetIcmpParameters(v CreateSecurityGroupRulePayloadGetIcmpParametersRetType) {
+	setCreateSecurityGroupRulePayloadGetIcmpParametersAttributeType(&o.IcmpParameters, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateSecurityGroupRulePayload) GetId() (res CreateSecurityGroupRulePayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateSecurityGroupRulePayload) GetIdOk() (ret CreateSecurityGroupRulePayloadGetIdRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateSecurityGroupRulePayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateSecurityGroupRulePayload) SetId(v CreateSecurityGroupRulePayloadGetIdRetType) {
+	setCreateSecurityGroupRulePayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetIpRange returns the IpRange field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetIpRange() *string {
-	if o == nil || IsNil(o.IpRange) {
-		var ret *string
-		return ret
-	}
-	return o.IpRange
+func (o *CreateSecurityGroupRulePayload) GetIpRange() (res CreateSecurityGroupRulePayloadGetIpRangeRetType) {
+	res, _ = o.GetIpRangeOk()
+	return
 }
 
 // GetIpRangeOk returns a tuple with the IpRange field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetIpRangeOk() (*string, bool) {
-	if o == nil || IsNil(o.IpRange) {
-		return nil, false
-	}
-	return o.IpRange, true
+func (o *CreateSecurityGroupRulePayload) GetIpRangeOk() (ret CreateSecurityGroupRulePayloadGetIpRangeRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetIpRangeAttributeTypeOk(o.IpRange)
 }
 
 // HasIpRange returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasIpRange() bool {
-	if o != nil && !IsNil(o.IpRange) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpRangeOk()
+	return ok
 }
 
 // SetIpRange gets a reference to the given string and assigns it to the IpRange field.
-func (o *CreateSecurityGroupRulePayload) SetIpRange(v *string) {
-	o.IpRange = v
+func (o *CreateSecurityGroupRulePayload) SetIpRange(v CreateSecurityGroupRulePayloadGetIpRangeRetType) {
+	setCreateSecurityGroupRulePayloadGetIpRangeAttributeType(&o.IpRange, v)
 }
 
 // GetPortRange returns the PortRange field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetPortRange() *PortRange {
-	if o == nil || IsNil(o.PortRange) {
-		var ret *PortRange
-		return ret
-	}
-	return o.PortRange
+func (o *CreateSecurityGroupRulePayload) GetPortRange() (res CreateSecurityGroupRulePayloadGetPortRangeRetType) {
+	res, _ = o.GetPortRangeOk()
+	return
 }
 
 // GetPortRangeOk returns a tuple with the PortRange field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetPortRangeOk() (*PortRange, bool) {
-	if o == nil || IsNil(o.PortRange) {
-		return nil, false
-	}
-	return o.PortRange, true
+func (o *CreateSecurityGroupRulePayload) GetPortRangeOk() (ret CreateSecurityGroupRulePayloadGetPortRangeRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetPortRangeAttributeTypeOk(o.PortRange)
 }
 
 // HasPortRange returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasPortRange() bool {
-	if o != nil && !IsNil(o.PortRange) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPortRangeOk()
+	return ok
 }
 
 // SetPortRange gets a reference to the given PortRange and assigns it to the PortRange field.
-func (o *CreateSecurityGroupRulePayload) SetPortRange(v *PortRange) {
-	o.PortRange = v
+func (o *CreateSecurityGroupRulePayload) SetPortRange(v CreateSecurityGroupRulePayloadGetPortRangeRetType) {
+	setCreateSecurityGroupRulePayloadGetPortRangeAttributeType(&o.PortRange, v)
 }
 
 // GetRemoteSecurityGroupId returns the RemoteSecurityGroupId field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetRemoteSecurityGroupId() *string {
-	if o == nil || IsNil(o.RemoteSecurityGroupId) {
-		var ret *string
-		return ret
-	}
-	return o.RemoteSecurityGroupId
+func (o *CreateSecurityGroupRulePayload) GetRemoteSecurityGroupId() (res CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdRetType) {
+	res, _ = o.GetRemoteSecurityGroupIdOk()
+	return
 }
 
 // GetRemoteSecurityGroupIdOk returns a tuple with the RemoteSecurityGroupId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetRemoteSecurityGroupIdOk() (*string, bool) {
-	if o == nil || IsNil(o.RemoteSecurityGroupId) {
-		return nil, false
-	}
-	return o.RemoteSecurityGroupId, true
+func (o *CreateSecurityGroupRulePayload) GetRemoteSecurityGroupIdOk() (ret CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeTypeOk(o.RemoteSecurityGroupId)
 }
 
 // HasRemoteSecurityGroupId returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasRemoteSecurityGroupId() bool {
-	if o != nil && !IsNil(o.RemoteSecurityGroupId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRemoteSecurityGroupIdOk()
+	return ok
 }
 
 // SetRemoteSecurityGroupId gets a reference to the given string and assigns it to the RemoteSecurityGroupId field.
-func (o *CreateSecurityGroupRulePayload) SetRemoteSecurityGroupId(v *string) {
-	o.RemoteSecurityGroupId = v
+func (o *CreateSecurityGroupRulePayload) SetRemoteSecurityGroupId(v CreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdRetType) {
+	setCreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeType(&o.RemoteSecurityGroupId, v)
 }
 
 // GetSecurityGroupId returns the SecurityGroupId field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetSecurityGroupId() *string {
-	if o == nil || IsNil(o.SecurityGroupId) {
-		var ret *string
-		return ret
-	}
-	return o.SecurityGroupId
+func (o *CreateSecurityGroupRulePayload) GetSecurityGroupId() (res CreateSecurityGroupRulePayloadGetSecurityGroupIdRetType) {
+	res, _ = o.GetSecurityGroupIdOk()
+	return
 }
 
 // GetSecurityGroupIdOk returns a tuple with the SecurityGroupId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetSecurityGroupIdOk() (*string, bool) {
-	if o == nil || IsNil(o.SecurityGroupId) {
-		return nil, false
-	}
-	return o.SecurityGroupId, true
+func (o *CreateSecurityGroupRulePayload) GetSecurityGroupIdOk() (ret CreateSecurityGroupRulePayloadGetSecurityGroupIdRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeTypeOk(o.SecurityGroupId)
 }
 
 // HasSecurityGroupId returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasSecurityGroupId() bool {
-	if o != nil && !IsNil(o.SecurityGroupId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupIdOk()
+	return ok
 }
 
 // SetSecurityGroupId gets a reference to the given string and assigns it to the SecurityGroupId field.
-func (o *CreateSecurityGroupRulePayload) SetSecurityGroupId(v *string) {
-	o.SecurityGroupId = v
+func (o *CreateSecurityGroupRulePayload) SetSecurityGroupId(v CreateSecurityGroupRulePayloadGetSecurityGroupIdRetType) {
+	setCreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeType(&o.SecurityGroupId, v)
 }
 
 // GetProtocol returns the Protocol field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRulePayload) GetProtocol() *CreateProtocol {
-	if o == nil || IsNil(o.Protocol) {
-		var ret *CreateProtocol
-		return ret
-	}
-	return o.Protocol
+func (o *CreateSecurityGroupRulePayload) GetProtocol() (res CreateSecurityGroupRulePayloadGetProtocolRetType) {
+	res, _ = o.GetProtocolOk()
+	return
 }
 
 // GetProtocolOk returns a tuple with the Protocol field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRulePayload) GetProtocolOk() (*CreateProtocol, bool) {
-	if o == nil || IsNil(o.Protocol) {
-		return nil, false
-	}
-	return o.Protocol, true
+func (o *CreateSecurityGroupRulePayload) GetProtocolOk() (ret CreateSecurityGroupRulePayloadGetProtocolRetType, ok bool) {
+	return getCreateSecurityGroupRulePayloadGetProtocolAttributeTypeOk(o.Protocol)
 }
 
 // HasProtocol returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRulePayload) HasProtocol() bool {
-	if o != nil && !IsNil(o.Protocol) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProtocolOk()
+	return ok
 }
 
 // SetProtocol gets a reference to the given CreateProtocol and assigns it to the Protocol field.
-func (o *CreateSecurityGroupRulePayload) SetProtocol(v *CreateProtocol) {
-	o.Protocol = v
+func (o *CreateSecurityGroupRulePayload) SetProtocol(v CreateSecurityGroupRulePayloadGetProtocolRetType) {
+	setCreateSecurityGroupRulePayloadGetProtocolAttributeType(&o.Protocol, v)
 }
 
 func (o CreateSecurityGroupRulePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getCreateSecurityGroupRulePayloadGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
+	}
+	if val, ok := getCreateSecurityGroupRulePayloadGetDirectionAttributeTypeOk(o.Direction); ok {
+		toSerialize["Direction"] = val
 	}
-	toSerialize["direction"] = o.Direction
-	if !IsNil(o.Ethertype) {
-		toSerialize["ethertype"] = o.Ethertype
+	if val, ok := getCreateSecurityGroupRulePayloadGetEthertypeAttributeTypeOk(o.Ethertype); ok {
+		toSerialize["Ethertype"] = val
 	}
-	if !IsNil(o.IcmpParameters) {
-		toSerialize["icmpParameters"] = o.IcmpParameters
+	if val, ok := getCreateSecurityGroupRulePayloadGetIcmpParametersAttributeTypeOk(o.IcmpParameters); ok {
+		toSerialize["IcmpParameters"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateSecurityGroupRulePayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.IpRange) {
-		toSerialize["ipRange"] = o.IpRange
+	if val, ok := getCreateSecurityGroupRulePayloadGetIpRangeAttributeTypeOk(o.IpRange); ok {
+		toSerialize["IpRange"] = val
 	}
-	if !IsNil(o.PortRange) {
-		toSerialize["portRange"] = o.PortRange
+	if val, ok := getCreateSecurityGroupRulePayloadGetPortRangeAttributeTypeOk(o.PortRange); ok {
+		toSerialize["PortRange"] = val
 	}
-	if !IsNil(o.RemoteSecurityGroupId) {
-		toSerialize["remoteSecurityGroupId"] = o.RemoteSecurityGroupId
+	if val, ok := getCreateSecurityGroupRulePayloadGetRemoteSecurityGroupIdAttributeTypeOk(o.RemoteSecurityGroupId); ok {
+		toSerialize["RemoteSecurityGroupId"] = val
 	}
-	if !IsNil(o.SecurityGroupId) {
-		toSerialize["securityGroupId"] = o.SecurityGroupId
+	if val, ok := getCreateSecurityGroupRulePayloadGetSecurityGroupIdAttributeTypeOk(o.SecurityGroupId); ok {
+		toSerialize["SecurityGroupId"] = val
 	}
-	if !IsNil(o.Protocol) {
-		toSerialize["protocol"] = o.Protocol
+	if val, ok := getCreateSecurityGroupRulePayloadGetProtocolAttributeTypeOk(o.Protocol); ok {
+		toSerialize["Protocol"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_security_group_rule_protocol.go b/services/iaas/model_create_security_group_rule_protocol.go
index ae955a538..b2e727575 100644
--- a/services/iaas/model_create_security_group_rule_protocol.go
+++ b/services/iaas/model_create_security_group_rule_protocol.go
@@ -17,9 +17,29 @@ import (
 // checks if the CreateSecurityGroupRuleProtocol type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateSecurityGroupRuleProtocol{}
 
+/*
+	types and functions for protocol
+*/
+
+// isModel
+type CreateSecurityGroupRuleProtocolGetProtocolAttributeType = *CreateProtocol
+type CreateSecurityGroupRuleProtocolGetProtocolArgType = CreateProtocol
+type CreateSecurityGroupRuleProtocolGetProtocolRetType = CreateProtocol
+
+func getCreateSecurityGroupRuleProtocolGetProtocolAttributeTypeOk(arg CreateSecurityGroupRuleProtocolGetProtocolAttributeType) (ret CreateSecurityGroupRuleProtocolGetProtocolRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSecurityGroupRuleProtocolGetProtocolAttributeType(arg *CreateSecurityGroupRuleProtocolGetProtocolAttributeType, val CreateSecurityGroupRuleProtocolGetProtocolRetType) {
+	*arg = &val
+}
+
 // CreateSecurityGroupRuleProtocol The internet protocol which the rule should match.
 type CreateSecurityGroupRuleProtocol struct {
-	Protocol *CreateProtocol `json:"protocol,omitempty"`
+	Protocol CreateSecurityGroupRuleProtocolGetProtocolAttributeType `json:"protocol,omitempty"`
 }
 
 // NewCreateSecurityGroupRuleProtocol instantiates a new CreateSecurityGroupRuleProtocol object
@@ -40,41 +60,32 @@ func NewCreateSecurityGroupRuleProtocolWithDefaults() *CreateSecurityGroupRulePr
 }
 
 // GetProtocol returns the Protocol field value if set, zero value otherwise.
-func (o *CreateSecurityGroupRuleProtocol) GetProtocol() *CreateProtocol {
-	if o == nil || IsNil(o.Protocol) {
-		var ret *CreateProtocol
-		return ret
-	}
-	return o.Protocol
+func (o *CreateSecurityGroupRuleProtocol) GetProtocol() (res CreateSecurityGroupRuleProtocolGetProtocolRetType) {
+	res, _ = o.GetProtocolOk()
+	return
 }
 
 // GetProtocolOk returns a tuple with the Protocol field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSecurityGroupRuleProtocol) GetProtocolOk() (*CreateProtocol, bool) {
-	if o == nil || IsNil(o.Protocol) {
-		return nil, false
-	}
-	return o.Protocol, true
+func (o *CreateSecurityGroupRuleProtocol) GetProtocolOk() (ret CreateSecurityGroupRuleProtocolGetProtocolRetType, ok bool) {
+	return getCreateSecurityGroupRuleProtocolGetProtocolAttributeTypeOk(o.Protocol)
 }
 
 // HasProtocol returns a boolean if a field has been set.
 func (o *CreateSecurityGroupRuleProtocol) HasProtocol() bool {
-	if o != nil && !IsNil(o.Protocol) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProtocolOk()
+	return ok
 }
 
 // SetProtocol gets a reference to the given CreateProtocol and assigns it to the Protocol field.
-func (o *CreateSecurityGroupRuleProtocol) SetProtocol(v *CreateProtocol) {
-	o.Protocol = v
+func (o *CreateSecurityGroupRuleProtocol) SetProtocol(v CreateSecurityGroupRuleProtocolGetProtocolRetType) {
+	setCreateSecurityGroupRuleProtocolGetProtocolAttributeType(&o.Protocol, v)
 }
 
 func (o CreateSecurityGroupRuleProtocol) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Protocol) {
-		toSerialize["protocol"] = o.Protocol
+	if val, ok := getCreateSecurityGroupRuleProtocolGetProtocolAttributeTypeOk(o.Protocol); ok {
+		toSerialize["Protocol"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_server_networking.go b/services/iaas/model_create_server_networking.go
index afbe456d4..460e7bc60 100644
--- a/services/iaas/model_create_server_networking.go
+++ b/services/iaas/model_create_server_networking.go
@@ -17,10 +17,31 @@ import (
 // checks if the CreateServerNetworking type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateServerNetworking{}
 
+/*
+	types and functions for networkId
+*/
+
+// isNotNullableString
+type CreateServerNetworkingGetNetworkIdAttributeType = *string
+
+func getCreateServerNetworkingGetNetworkIdAttributeTypeOk(arg CreateServerNetworkingGetNetworkIdAttributeType) (ret CreateServerNetworkingGetNetworkIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerNetworkingGetNetworkIdAttributeType(arg *CreateServerNetworkingGetNetworkIdAttributeType, val CreateServerNetworkingGetNetworkIdRetType) {
+	*arg = &val
+}
+
+type CreateServerNetworkingGetNetworkIdArgType = string
+type CreateServerNetworkingGetNetworkIdRetType = string
+
 // CreateServerNetworking The initial networking setup for the server creation with a network.
 type CreateServerNetworking struct {
 	// Universally Unique Identifier (UUID).
-	NetworkId *string `json:"networkId,omitempty"`
+	NetworkId CreateServerNetworkingGetNetworkIdAttributeType `json:"networkId,omitempty"`
 }
 
 // NewCreateServerNetworking instantiates a new CreateServerNetworking object
@@ -41,41 +62,32 @@ func NewCreateServerNetworkingWithDefaults() *CreateServerNetworking {
 }
 
 // GetNetworkId returns the NetworkId field value if set, zero value otherwise.
-func (o *CreateServerNetworking) GetNetworkId() *string {
-	if o == nil || IsNil(o.NetworkId) {
-		var ret *string
-		return ret
-	}
-	return o.NetworkId
+func (o *CreateServerNetworking) GetNetworkId() (res CreateServerNetworkingGetNetworkIdRetType) {
+	res, _ = o.GetNetworkIdOk()
+	return
 }
 
 // GetNetworkIdOk returns a tuple with the NetworkId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerNetworking) GetNetworkIdOk() (*string, bool) {
-	if o == nil || IsNil(o.NetworkId) {
-		return nil, false
-	}
-	return o.NetworkId, true
+func (o *CreateServerNetworking) GetNetworkIdOk() (ret CreateServerNetworkingGetNetworkIdRetType, ok bool) {
+	return getCreateServerNetworkingGetNetworkIdAttributeTypeOk(o.NetworkId)
 }
 
 // HasNetworkId returns a boolean if a field has been set.
 func (o *CreateServerNetworking) HasNetworkId() bool {
-	if o != nil && !IsNil(o.NetworkId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkIdOk()
+	return ok
 }
 
 // SetNetworkId gets a reference to the given string and assigns it to the NetworkId field.
-func (o *CreateServerNetworking) SetNetworkId(v *string) {
-	o.NetworkId = v
+func (o *CreateServerNetworking) SetNetworkId(v CreateServerNetworkingGetNetworkIdRetType) {
+	setCreateServerNetworkingGetNetworkIdAttributeType(&o.NetworkId, v)
 }
 
 func (o CreateServerNetworking) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.NetworkId) {
-		toSerialize["networkId"] = o.NetworkId
+	if val, ok := getCreateServerNetworkingGetNetworkIdAttributeTypeOk(o.NetworkId); ok {
+		toSerialize["NetworkId"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_server_networking_with_nics.go b/services/iaas/model_create_server_networking_with_nics.go
index 867a2fca7..e6e0fa73b 100644
--- a/services/iaas/model_create_server_networking_with_nics.go
+++ b/services/iaas/model_create_server_networking_with_nics.go
@@ -17,10 +17,30 @@ import (
 // checks if the CreateServerNetworkingWithNics type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateServerNetworkingWithNics{}
 
+/*
+	types and functions for nicIds
+*/
+
+// isArray
+type CreateServerNetworkingWithNicsGetNicIdsAttributeType = *[]string
+type CreateServerNetworkingWithNicsGetNicIdsArgType = []string
+type CreateServerNetworkingWithNicsGetNicIdsRetType = []string
+
+func getCreateServerNetworkingWithNicsGetNicIdsAttributeTypeOk(arg CreateServerNetworkingWithNicsGetNicIdsAttributeType) (ret CreateServerNetworkingWithNicsGetNicIdsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerNetworkingWithNicsGetNicIdsAttributeType(arg *CreateServerNetworkingWithNicsGetNicIdsAttributeType, val CreateServerNetworkingWithNicsGetNicIdsRetType) {
+	*arg = &val
+}
+
 // CreateServerNetworkingWithNics The initial networking setup for the server creation with a network interface.
 type CreateServerNetworkingWithNics struct {
 	// A list of UUIDs.
-	NicIds *[]string `json:"nicIds,omitempty"`
+	NicIds CreateServerNetworkingWithNicsGetNicIdsAttributeType `json:"nicIds,omitempty"`
 }
 
 // NewCreateServerNetworkingWithNics instantiates a new CreateServerNetworkingWithNics object
@@ -41,41 +61,32 @@ func NewCreateServerNetworkingWithNicsWithDefaults() *CreateServerNetworkingWith
 }
 
 // GetNicIds returns the NicIds field value if set, zero value otherwise.
-func (o *CreateServerNetworkingWithNics) GetNicIds() *[]string {
-	if o == nil || IsNil(o.NicIds) {
-		var ret *[]string
-		return ret
-	}
-	return o.NicIds
+func (o *CreateServerNetworkingWithNics) GetNicIds() (res CreateServerNetworkingWithNicsGetNicIdsRetType) {
+	res, _ = o.GetNicIdsOk()
+	return
 }
 
 // GetNicIdsOk returns a tuple with the NicIds field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerNetworkingWithNics) GetNicIdsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.NicIds) {
-		return nil, false
-	}
-	return o.NicIds, true
+func (o *CreateServerNetworkingWithNics) GetNicIdsOk() (ret CreateServerNetworkingWithNicsGetNicIdsRetType, ok bool) {
+	return getCreateServerNetworkingWithNicsGetNicIdsAttributeTypeOk(o.NicIds)
 }
 
 // HasNicIds returns a boolean if a field has been set.
 func (o *CreateServerNetworkingWithNics) HasNicIds() bool {
-	if o != nil && !IsNil(o.NicIds) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNicIdsOk()
+	return ok
 }
 
 // SetNicIds gets a reference to the given []string and assigns it to the NicIds field.
-func (o *CreateServerNetworkingWithNics) SetNicIds(v *[]string) {
-	o.NicIds = v
+func (o *CreateServerNetworkingWithNics) SetNicIds(v CreateServerNetworkingWithNicsGetNicIdsRetType) {
+	setCreateServerNetworkingWithNicsGetNicIdsAttributeType(&o.NicIds, v)
 }
 
 func (o CreateServerNetworkingWithNics) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.NicIds) {
-		toSerialize["nicIds"] = o.NicIds
+	if val, ok := getCreateServerNetworkingWithNicsGetNicIdsAttributeTypeOk(o.NicIds); ok {
+		toSerialize["NicIds"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_server_payload.go b/services/iaas/model_create_server_payload.go
index b711f12cd..9249084fd 100644
--- a/services/iaas/model_create_server_payload.go
+++ b/services/iaas/model_create_server_payload.go
@@ -18,51 +18,501 @@ import (
 // checks if the CreateServerPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateServerPayload{}
 
+/*
+	types and functions for affinityGroup
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetAffinityGroupAttributeType = *string
+
+func getCreateServerPayloadGetAffinityGroupAttributeTypeOk(arg CreateServerPayloadGetAffinityGroupAttributeType) (ret CreateServerPayloadGetAffinityGroupRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetAffinityGroupAttributeType(arg *CreateServerPayloadGetAffinityGroupAttributeType, val CreateServerPayloadGetAffinityGroupRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetAffinityGroupArgType = string
+type CreateServerPayloadGetAffinityGroupRetType = string
+
+/*
+	types and functions for availabilityZone
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetAvailabilityZoneAttributeType = *string
+
+func getCreateServerPayloadGetAvailabilityZoneAttributeTypeOk(arg CreateServerPayloadGetAvailabilityZoneAttributeType) (ret CreateServerPayloadGetAvailabilityZoneRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetAvailabilityZoneAttributeType(arg *CreateServerPayloadGetAvailabilityZoneAttributeType, val CreateServerPayloadGetAvailabilityZoneRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetAvailabilityZoneArgType = string
+type CreateServerPayloadGetAvailabilityZoneRetType = string
+
+/*
+	types and functions for bootVolume
+*/
+
+// isModel
+type CreateServerPayloadGetBootVolumeAttributeType = *CreateServerPayloadBootVolume
+type CreateServerPayloadGetBootVolumeArgType = CreateServerPayloadBootVolume
+type CreateServerPayloadGetBootVolumeRetType = CreateServerPayloadBootVolume
+
+func getCreateServerPayloadGetBootVolumeAttributeTypeOk(arg CreateServerPayloadGetBootVolumeAttributeType) (ret CreateServerPayloadGetBootVolumeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetBootVolumeAttributeType(arg *CreateServerPayloadGetBootVolumeAttributeType, val CreateServerPayloadGetBootVolumeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type CreateServerPayloadGetCreatedAtAttributeType = *time.Time
+type CreateServerPayloadGetCreatedAtArgType = time.Time
+type CreateServerPayloadGetCreatedAtRetType = time.Time
+
+func getCreateServerPayloadGetCreatedAtAttributeTypeOk(arg CreateServerPayloadGetCreatedAtAttributeType) (ret CreateServerPayloadGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetCreatedAtAttributeType(arg *CreateServerPayloadGetCreatedAtAttributeType, val CreateServerPayloadGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for errorMessage
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetErrorMessageAttributeType = *string
+
+func getCreateServerPayloadGetErrorMessageAttributeTypeOk(arg CreateServerPayloadGetErrorMessageAttributeType) (ret CreateServerPayloadGetErrorMessageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetErrorMessageAttributeType(arg *CreateServerPayloadGetErrorMessageAttributeType, val CreateServerPayloadGetErrorMessageRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetErrorMessageArgType = string
+type CreateServerPayloadGetErrorMessageRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetIdAttributeType = *string
+
+func getCreateServerPayloadGetIdAttributeTypeOk(arg CreateServerPayloadGetIdAttributeType) (ret CreateServerPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetIdAttributeType(arg *CreateServerPayloadGetIdAttributeType, val CreateServerPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetIdArgType = string
+type CreateServerPayloadGetIdRetType = string
+
+/*
+	types and functions for imageId
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetImageIdAttributeType = *string
+
+func getCreateServerPayloadGetImageIdAttributeTypeOk(arg CreateServerPayloadGetImageIdAttributeType) (ret CreateServerPayloadGetImageIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetImageIdAttributeType(arg *CreateServerPayloadGetImageIdAttributeType, val CreateServerPayloadGetImageIdRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetImageIdArgType = string
+type CreateServerPayloadGetImageIdRetType = string
+
+/*
+	types and functions for keypairName
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetKeypairNameAttributeType = *string
+
+func getCreateServerPayloadGetKeypairNameAttributeTypeOk(arg CreateServerPayloadGetKeypairNameAttributeType) (ret CreateServerPayloadGetKeypairNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetKeypairNameAttributeType(arg *CreateServerPayloadGetKeypairNameAttributeType, val CreateServerPayloadGetKeypairNameRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetKeypairNameArgType = string
+type CreateServerPayloadGetKeypairNameRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateServerPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateServerPayloadGetLabelsArgType = map[string]interface{}
+type CreateServerPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateServerPayloadGetLabelsAttributeTypeOk(arg CreateServerPayloadGetLabelsAttributeType) (ret CreateServerPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetLabelsAttributeType(arg *CreateServerPayloadGetLabelsAttributeType, val CreateServerPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for launchedAt
+*/
+
+// isDateTime
+type CreateServerPayloadGetLaunchedAtAttributeType = *time.Time
+type CreateServerPayloadGetLaunchedAtArgType = time.Time
+type CreateServerPayloadGetLaunchedAtRetType = time.Time
+
+func getCreateServerPayloadGetLaunchedAtAttributeTypeOk(arg CreateServerPayloadGetLaunchedAtAttributeType) (ret CreateServerPayloadGetLaunchedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetLaunchedAtAttributeType(arg *CreateServerPayloadGetLaunchedAtAttributeType, val CreateServerPayloadGetLaunchedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for machineType
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetMachineTypeAttributeType = *string
+
+func getCreateServerPayloadGetMachineTypeAttributeTypeOk(arg CreateServerPayloadGetMachineTypeAttributeType) (ret CreateServerPayloadGetMachineTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetMachineTypeAttributeType(arg *CreateServerPayloadGetMachineTypeAttributeType, val CreateServerPayloadGetMachineTypeRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetMachineTypeArgType = string
+type CreateServerPayloadGetMachineTypeRetType = string
+
+/*
+	types and functions for maintenanceWindow
+*/
+
+// isModel
+type CreateServerPayloadGetMaintenanceWindowAttributeType = *ServerMaintenance
+type CreateServerPayloadGetMaintenanceWindowArgType = ServerMaintenance
+type CreateServerPayloadGetMaintenanceWindowRetType = ServerMaintenance
+
+func getCreateServerPayloadGetMaintenanceWindowAttributeTypeOk(arg CreateServerPayloadGetMaintenanceWindowAttributeType) (ret CreateServerPayloadGetMaintenanceWindowRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetMaintenanceWindowAttributeType(arg *CreateServerPayloadGetMaintenanceWindowAttributeType, val CreateServerPayloadGetMaintenanceWindowRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetNameAttributeType = *string
+
+func getCreateServerPayloadGetNameAttributeTypeOk(arg CreateServerPayloadGetNameAttributeType) (ret CreateServerPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetNameAttributeType(arg *CreateServerPayloadGetNameAttributeType, val CreateServerPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetNameArgType = string
+type CreateServerPayloadGetNameRetType = string
+
+/*
+	types and functions for networking
+*/
+
+// isModel
+type CreateServerPayloadGetNetworkingAttributeType = *CreateServerPayloadNetworking
+type CreateServerPayloadGetNetworkingArgType = CreateServerPayloadNetworking
+type CreateServerPayloadGetNetworkingRetType = CreateServerPayloadNetworking
+
+func getCreateServerPayloadGetNetworkingAttributeTypeOk(arg CreateServerPayloadGetNetworkingAttributeType) (ret CreateServerPayloadGetNetworkingRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetNetworkingAttributeType(arg *CreateServerPayloadGetNetworkingAttributeType, val CreateServerPayloadGetNetworkingRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for nics
+*/
+
+// isArray
+type CreateServerPayloadGetNicsAttributeType = *[]ServerNetwork
+type CreateServerPayloadGetNicsArgType = []ServerNetwork
+type CreateServerPayloadGetNicsRetType = []ServerNetwork
+
+func getCreateServerPayloadGetNicsAttributeTypeOk(arg CreateServerPayloadGetNicsAttributeType) (ret CreateServerPayloadGetNicsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetNicsAttributeType(arg *CreateServerPayloadGetNicsAttributeType, val CreateServerPayloadGetNicsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for powerStatus
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetPowerStatusAttributeType = *string
+
+func getCreateServerPayloadGetPowerStatusAttributeTypeOk(arg CreateServerPayloadGetPowerStatusAttributeType) (ret CreateServerPayloadGetPowerStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetPowerStatusAttributeType(arg *CreateServerPayloadGetPowerStatusAttributeType, val CreateServerPayloadGetPowerStatusRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetPowerStatusArgType = string
+type CreateServerPayloadGetPowerStatusRetType = string
+
+/*
+	types and functions for securityGroups
+*/
+
+// isArray
+type CreateServerPayloadGetSecurityGroupsAttributeType = *[]string
+type CreateServerPayloadGetSecurityGroupsArgType = []string
+type CreateServerPayloadGetSecurityGroupsRetType = []string
+
+func getCreateServerPayloadGetSecurityGroupsAttributeTypeOk(arg CreateServerPayloadGetSecurityGroupsAttributeType) (ret CreateServerPayloadGetSecurityGroupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetSecurityGroupsAttributeType(arg *CreateServerPayloadGetSecurityGroupsAttributeType, val CreateServerPayloadGetSecurityGroupsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for serviceAccountMails
+*/
+
+// isArray
+type CreateServerPayloadGetServiceAccountMailsAttributeType = *[]string
+type CreateServerPayloadGetServiceAccountMailsArgType = []string
+type CreateServerPayloadGetServiceAccountMailsRetType = []string
+
+func getCreateServerPayloadGetServiceAccountMailsAttributeTypeOk(arg CreateServerPayloadGetServiceAccountMailsAttributeType) (ret CreateServerPayloadGetServiceAccountMailsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetServiceAccountMailsAttributeType(arg *CreateServerPayloadGetServiceAccountMailsAttributeType, val CreateServerPayloadGetServiceAccountMailsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type CreateServerPayloadGetStatusAttributeType = *string
+
+func getCreateServerPayloadGetStatusAttributeTypeOk(arg CreateServerPayloadGetStatusAttributeType) (ret CreateServerPayloadGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetStatusAttributeType(arg *CreateServerPayloadGetStatusAttributeType, val CreateServerPayloadGetStatusRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadGetStatusArgType = string
+type CreateServerPayloadGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type CreateServerPayloadGetUpdatedAtAttributeType = *time.Time
+type CreateServerPayloadGetUpdatedAtArgType = time.Time
+type CreateServerPayloadGetUpdatedAtRetType = time.Time
+
+func getCreateServerPayloadGetUpdatedAtAttributeTypeOk(arg CreateServerPayloadGetUpdatedAtAttributeType) (ret CreateServerPayloadGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetUpdatedAtAttributeType(arg *CreateServerPayloadGetUpdatedAtAttributeType, val CreateServerPayloadGetUpdatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for userData
+*/
+
+// isByteArray
+type CreateServerPayloadGetUserDataAttributeType = *[]byte
+type CreateServerPayloadGetUserDataArgType = []byte
+type CreateServerPayloadGetUserDataRetType = []byte
+
+func getCreateServerPayloadGetUserDataAttributeTypeOk(arg CreateServerPayloadGetUserDataAttributeType) (ret CreateServerPayloadGetUserDataRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetUserDataAttributeType(arg *CreateServerPayloadGetUserDataAttributeType, val CreateServerPayloadGetUserDataRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for volumes
+*/
+
+// isArray
+type CreateServerPayloadGetVolumesAttributeType = *[]string
+type CreateServerPayloadGetVolumesArgType = []string
+type CreateServerPayloadGetVolumesRetType = []string
+
+func getCreateServerPayloadGetVolumesAttributeTypeOk(arg CreateServerPayloadGetVolumesAttributeType) (ret CreateServerPayloadGetVolumesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadGetVolumesAttributeType(arg *CreateServerPayloadGetVolumesAttributeType, val CreateServerPayloadGetVolumesRetType) {
+	*arg = &val
+}
+
 // CreateServerPayload Representation of a single server object.
 type CreateServerPayload struct {
 	// Universally Unique Identifier (UUID).
-	AffinityGroup *string `json:"affinityGroup,omitempty"`
+	AffinityGroup CreateServerPayloadGetAffinityGroupAttributeType `json:"affinityGroup,omitempty"`
 	// Object that represents an availability zone.
-	AvailabilityZone *string                        `json:"availabilityZone,omitempty"`
-	BootVolume       *CreateServerPayloadBootVolume `json:"bootVolume,omitempty"`
+	AvailabilityZone CreateServerPayloadGetAvailabilityZoneAttributeType `json:"availabilityZone,omitempty"`
+	BootVolume       CreateServerPayloadGetBootVolumeAttributeType       `json:"bootVolume,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt CreateServerPayloadGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// An error message.
-	ErrorMessage *string `json:"errorMessage,omitempty"`
+	ErrorMessage CreateServerPayloadGetErrorMessageAttributeType `json:"errorMessage,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateServerPayloadGetIdAttributeType `json:"id,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ImageId *string `json:"imageId,omitempty"`
+	ImageId CreateServerPayloadGetImageIdAttributeType `json:"imageId,omitempty"`
 	// The name of an SSH keypair. Allowed characters are letters [a-zA-Z], digits [0-9] and the following special characters: [@._-].
-	KeypairName *string `json:"keypairName,omitempty"`
+	KeypairName CreateServerPayloadGetKeypairNameAttributeType `json:"keypairName,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateServerPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// Date-time when resource was launched.
-	LaunchedAt *time.Time `json:"launchedAt,omitempty"`
+	LaunchedAt CreateServerPayloadGetLaunchedAtAttributeType `json:"launchedAt,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	MachineType       *string            `json:"machineType"`
-	MaintenanceWindow *ServerMaintenance `json:"maintenanceWindow,omitempty"`
+	MachineType       CreateServerPayloadGetMachineTypeAttributeType       `json:"machineType"`
+	MaintenanceWindow CreateServerPayloadGetMaintenanceWindowAttributeType `json:"maintenanceWindow,omitempty"`
 	// The name for a Server.
 	// REQUIRED
-	Name       *string                        `json:"name"`
-	Networking *CreateServerPayloadNetworking `json:"networking,omitempty"`
+	Name       CreateServerPayloadGetNameAttributeType       `json:"name"`
+	Networking CreateServerPayloadGetNetworkingAttributeType `json:"networking,omitempty"`
 	// A list of networks attached to a server.
-	Nics *[]ServerNetwork `json:"nics,omitempty"`
+	Nics CreateServerPayloadGetNicsAttributeType `json:"nics,omitempty"`
 	// The power status of a server. Possible values: `CRASHED`, `ERROR`, `RUNNING`, `STOPPED`.
-	PowerStatus *string `json:"powerStatus,omitempty"`
+	PowerStatus CreateServerPayloadGetPowerStatusAttributeType `json:"powerStatus,omitempty"`
 	// A list of General Objects.
-	SecurityGroups *[]string `json:"securityGroups,omitempty"`
+	SecurityGroups CreateServerPayloadGetSecurityGroupsAttributeType `json:"securityGroups,omitempty"`
 	// A list of service account mails.
-	ServiceAccountMails *[]string `json:"serviceAccountMails,omitempty"`
+	ServiceAccountMails CreateServerPayloadGetServiceAccountMailsAttributeType `json:"serviceAccountMails,omitempty"`
 	// The status of a server object. Possible values: `ACTIVE`, `BACKING-UP`, `CREATING`, `DEALLOCATED`, `DEALLOCATING`, `DELETED`, `DELETING`, `ERROR`, `INACTIVE`, `MIGRATING`, `REBOOT`, `REBOOTING`, `REBUILD`, `REBUILDING`, `RESCUE`, `RESCUING`, `RESIZING`, `RESTORING`, `SNAPSHOTTING`, `STARTING`, `STOPPING`, `UNRESCUING`, `UPDATING`.
-	Status *string `json:"status,omitempty"`
+	Status CreateServerPayloadGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt CreateServerPayloadGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 	// User Data that is provided to the server. Must be base64 encoded and is passed via cloud-init to the server.
-	UserData *string `json:"userData,omitempty"`
+	UserData CreateServerPayloadGetUserDataAttributeType `json:"userData,omitempty"`
 	// A list of UUIDs.
-	Volumes *[]string `json:"volumes,omitempty"`
+	Volumes CreateServerPayloadGetVolumesAttributeType `json:"volumes,omitempty"`
 }
 
 type _CreateServerPayload CreateServerPayload
@@ -71,10 +521,10 @@ type _CreateServerPayload CreateServerPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateServerPayload(machineType *string, name *string) *CreateServerPayload {
+func NewCreateServerPayload(machineType CreateServerPayloadGetMachineTypeArgType, name CreateServerPayloadGetNameArgType) *CreateServerPayload {
 	this := CreateServerPayload{}
-	this.MachineType = machineType
-	this.Name = name
+	setCreateServerPayloadGetMachineTypeAttributeType(&this.MachineType, machineType)
+	setCreateServerPayloadGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -87,756 +537,566 @@ func NewCreateServerPayloadWithDefaults() *CreateServerPayload {
 }
 
 // GetAffinityGroup returns the AffinityGroup field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetAffinityGroup() *string {
-	if o == nil || IsNil(o.AffinityGroup) {
-		var ret *string
-		return ret
-	}
-	return o.AffinityGroup
+func (o *CreateServerPayload) GetAffinityGroup() (res CreateServerPayloadGetAffinityGroupRetType) {
+	res, _ = o.GetAffinityGroupOk()
+	return
 }
 
 // GetAffinityGroupOk returns a tuple with the AffinityGroup field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetAffinityGroupOk() (*string, bool) {
-	if o == nil || IsNil(o.AffinityGroup) {
-		return nil, false
-	}
-	return o.AffinityGroup, true
+func (o *CreateServerPayload) GetAffinityGroupOk() (ret CreateServerPayloadGetAffinityGroupRetType, ok bool) {
+	return getCreateServerPayloadGetAffinityGroupAttributeTypeOk(o.AffinityGroup)
 }
 
 // HasAffinityGroup returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasAffinityGroup() bool {
-	if o != nil && !IsNil(o.AffinityGroup) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAffinityGroupOk()
+	return ok
 }
 
 // SetAffinityGroup gets a reference to the given string and assigns it to the AffinityGroup field.
-func (o *CreateServerPayload) SetAffinityGroup(v *string) {
-	o.AffinityGroup = v
+func (o *CreateServerPayload) SetAffinityGroup(v CreateServerPayloadGetAffinityGroupRetType) {
+	setCreateServerPayloadGetAffinityGroupAttributeType(&o.AffinityGroup, v)
 }
 
 // GetAvailabilityZone returns the AvailabilityZone field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetAvailabilityZone() *string {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		var ret *string
-		return ret
-	}
-	return o.AvailabilityZone
+func (o *CreateServerPayload) GetAvailabilityZone() (res CreateServerPayloadGetAvailabilityZoneRetType) {
+	res, _ = o.GetAvailabilityZoneOk()
+	return
 }
 
 // GetAvailabilityZoneOk returns a tuple with the AvailabilityZone field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetAvailabilityZoneOk() (*string, bool) {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		return nil, false
-	}
-	return o.AvailabilityZone, true
+func (o *CreateServerPayload) GetAvailabilityZoneOk() (ret CreateServerPayloadGetAvailabilityZoneRetType, ok bool) {
+	return getCreateServerPayloadGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone)
 }
 
 // HasAvailabilityZone returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasAvailabilityZone() bool {
-	if o != nil && !IsNil(o.AvailabilityZone) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAvailabilityZoneOk()
+	return ok
 }
 
 // SetAvailabilityZone gets a reference to the given string and assigns it to the AvailabilityZone field.
-func (o *CreateServerPayload) SetAvailabilityZone(v *string) {
-	o.AvailabilityZone = v
+func (o *CreateServerPayload) SetAvailabilityZone(v CreateServerPayloadGetAvailabilityZoneRetType) {
+	setCreateServerPayloadGetAvailabilityZoneAttributeType(&o.AvailabilityZone, v)
 }
 
 // GetBootVolume returns the BootVolume field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetBootVolume() *CreateServerPayloadBootVolume {
-	if o == nil || IsNil(o.BootVolume) {
-		var ret *CreateServerPayloadBootVolume
-		return ret
-	}
-	return o.BootVolume
+func (o *CreateServerPayload) GetBootVolume() (res CreateServerPayloadGetBootVolumeRetType) {
+	res, _ = o.GetBootVolumeOk()
+	return
 }
 
 // GetBootVolumeOk returns a tuple with the BootVolume field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetBootVolumeOk() (*CreateServerPayloadBootVolume, bool) {
-	if o == nil || IsNil(o.BootVolume) {
-		return nil, false
-	}
-	return o.BootVolume, true
+func (o *CreateServerPayload) GetBootVolumeOk() (ret CreateServerPayloadGetBootVolumeRetType, ok bool) {
+	return getCreateServerPayloadGetBootVolumeAttributeTypeOk(o.BootVolume)
 }
 
 // HasBootVolume returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasBootVolume() bool {
-	if o != nil && !IsNil(o.BootVolume) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetBootVolumeOk()
+	return ok
 }
 
 // SetBootVolume gets a reference to the given CreateServerPayloadBootVolume and assigns it to the BootVolume field.
-func (o *CreateServerPayload) SetBootVolume(v *CreateServerPayloadBootVolume) {
-	o.BootVolume = v
+func (o *CreateServerPayload) SetBootVolume(v CreateServerPayloadGetBootVolumeRetType) {
+	setCreateServerPayloadGetBootVolumeAttributeType(&o.BootVolume, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *CreateServerPayload) GetCreatedAt() (res CreateServerPayloadGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *CreateServerPayload) GetCreatedAtOk() (ret CreateServerPayloadGetCreatedAtRetType, ok bool) {
+	return getCreateServerPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *CreateServerPayload) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *CreateServerPayload) SetCreatedAt(v CreateServerPayloadGetCreatedAtRetType) {
+	setCreateServerPayloadGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetErrorMessage returns the ErrorMessage field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetErrorMessage() *string {
-	if o == nil || IsNil(o.ErrorMessage) {
-		var ret *string
-		return ret
-	}
-	return o.ErrorMessage
+func (o *CreateServerPayload) GetErrorMessage() (res CreateServerPayloadGetErrorMessageRetType) {
+	res, _ = o.GetErrorMessageOk()
+	return
 }
 
 // GetErrorMessageOk returns a tuple with the ErrorMessage field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetErrorMessageOk() (*string, bool) {
-	if o == nil || IsNil(o.ErrorMessage) {
-		return nil, false
-	}
-	return o.ErrorMessage, true
+func (o *CreateServerPayload) GetErrorMessageOk() (ret CreateServerPayloadGetErrorMessageRetType, ok bool) {
+	return getCreateServerPayloadGetErrorMessageAttributeTypeOk(o.ErrorMessage)
 }
 
 // HasErrorMessage returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasErrorMessage() bool {
-	if o != nil && !IsNil(o.ErrorMessage) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetErrorMessageOk()
+	return ok
 }
 
 // SetErrorMessage gets a reference to the given string and assigns it to the ErrorMessage field.
-func (o *CreateServerPayload) SetErrorMessage(v *string) {
-	o.ErrorMessage = v
+func (o *CreateServerPayload) SetErrorMessage(v CreateServerPayloadGetErrorMessageRetType) {
+	setCreateServerPayloadGetErrorMessageAttributeType(&o.ErrorMessage, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateServerPayload) GetId() (res CreateServerPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateServerPayload) GetIdOk() (ret CreateServerPayloadGetIdRetType, ok bool) {
+	return getCreateServerPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateServerPayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateServerPayload) SetId(v CreateServerPayloadGetIdRetType) {
+	setCreateServerPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetImageId returns the ImageId field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetImageId() *string {
-	if o == nil || IsNil(o.ImageId) {
-		var ret *string
-		return ret
-	}
-	return o.ImageId
+func (o *CreateServerPayload) GetImageId() (res CreateServerPayloadGetImageIdRetType) {
+	res, _ = o.GetImageIdOk()
+	return
 }
 
 // GetImageIdOk returns a tuple with the ImageId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetImageIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ImageId) {
-		return nil, false
-	}
-	return o.ImageId, true
+func (o *CreateServerPayload) GetImageIdOk() (ret CreateServerPayloadGetImageIdRetType, ok bool) {
+	return getCreateServerPayloadGetImageIdAttributeTypeOk(o.ImageId)
 }
 
 // HasImageId returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasImageId() bool {
-	if o != nil && !IsNil(o.ImageId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetImageIdOk()
+	return ok
 }
 
 // SetImageId gets a reference to the given string and assigns it to the ImageId field.
-func (o *CreateServerPayload) SetImageId(v *string) {
-	o.ImageId = v
+func (o *CreateServerPayload) SetImageId(v CreateServerPayloadGetImageIdRetType) {
+	setCreateServerPayloadGetImageIdAttributeType(&o.ImageId, v)
 }
 
 // GetKeypairName returns the KeypairName field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetKeypairName() *string {
-	if o == nil || IsNil(o.KeypairName) {
-		var ret *string
-		return ret
-	}
-	return o.KeypairName
+func (o *CreateServerPayload) GetKeypairName() (res CreateServerPayloadGetKeypairNameRetType) {
+	res, _ = o.GetKeypairNameOk()
+	return
 }
 
 // GetKeypairNameOk returns a tuple with the KeypairName field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetKeypairNameOk() (*string, bool) {
-	if o == nil || IsNil(o.KeypairName) {
-		return nil, false
-	}
-	return o.KeypairName, true
+func (o *CreateServerPayload) GetKeypairNameOk() (ret CreateServerPayloadGetKeypairNameRetType, ok bool) {
+	return getCreateServerPayloadGetKeypairNameAttributeTypeOk(o.KeypairName)
 }
 
 // HasKeypairName returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasKeypairName() bool {
-	if o != nil && !IsNil(o.KeypairName) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetKeypairNameOk()
+	return ok
 }
 
 // SetKeypairName gets a reference to the given string and assigns it to the KeypairName field.
-func (o *CreateServerPayload) SetKeypairName(v *string) {
-	o.KeypairName = v
+func (o *CreateServerPayload) SetKeypairName(v CreateServerPayloadGetKeypairNameRetType) {
+	setCreateServerPayloadGetKeypairNameAttributeType(&o.KeypairName, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateServerPayload) GetLabels() (res CreateServerPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateServerPayload) GetLabelsOk() (ret CreateServerPayloadGetLabelsRetType, ok bool) {
+	return getCreateServerPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateServerPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateServerPayload) SetLabels(v CreateServerPayloadGetLabelsRetType) {
+	setCreateServerPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetLaunchedAt returns the LaunchedAt field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetLaunchedAt() *time.Time {
-	if o == nil || IsNil(o.LaunchedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.LaunchedAt
+func (o *CreateServerPayload) GetLaunchedAt() (res CreateServerPayloadGetLaunchedAtRetType) {
+	res, _ = o.GetLaunchedAtOk()
+	return
 }
 
 // GetLaunchedAtOk returns a tuple with the LaunchedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetLaunchedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.LaunchedAt) {
-		return nil, false
-	}
-	return o.LaunchedAt, true
+func (o *CreateServerPayload) GetLaunchedAtOk() (ret CreateServerPayloadGetLaunchedAtRetType, ok bool) {
+	return getCreateServerPayloadGetLaunchedAtAttributeTypeOk(o.LaunchedAt)
 }
 
 // HasLaunchedAt returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasLaunchedAt() bool {
-	if o != nil && !IsNil(o.LaunchedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLaunchedAtOk()
+	return ok
 }
 
 // SetLaunchedAt gets a reference to the given time.Time and assigns it to the LaunchedAt field.
-func (o *CreateServerPayload) SetLaunchedAt(v *time.Time) {
-	o.LaunchedAt = v
+func (o *CreateServerPayload) SetLaunchedAt(v CreateServerPayloadGetLaunchedAtRetType) {
+	setCreateServerPayloadGetLaunchedAtAttributeType(&o.LaunchedAt, v)
 }
 
 // GetMachineType returns the MachineType field value
-func (o *CreateServerPayload) GetMachineType() *string {
-	if o == nil || IsNil(o.MachineType) {
-		var ret *string
-		return ret
-	}
-
-	return o.MachineType
+func (o *CreateServerPayload) GetMachineType() (ret CreateServerPayloadGetMachineTypeRetType) {
+	ret, _ = o.GetMachineTypeOk()
+	return ret
 }
 
 // GetMachineTypeOk returns a tuple with the MachineType field value
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetMachineTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.MachineType, true
+func (o *CreateServerPayload) GetMachineTypeOk() (ret CreateServerPayloadGetMachineTypeRetType, ok bool) {
+	return getCreateServerPayloadGetMachineTypeAttributeTypeOk(o.MachineType)
 }
 
 // SetMachineType sets field value
-func (o *CreateServerPayload) SetMachineType(v *string) {
-	o.MachineType = v
+func (o *CreateServerPayload) SetMachineType(v CreateServerPayloadGetMachineTypeRetType) {
+	setCreateServerPayloadGetMachineTypeAttributeType(&o.MachineType, v)
 }
 
 // GetMaintenanceWindow returns the MaintenanceWindow field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetMaintenanceWindow() *ServerMaintenance {
-	if o == nil || IsNil(o.MaintenanceWindow) {
-		var ret *ServerMaintenance
-		return ret
-	}
-	return o.MaintenanceWindow
+func (o *CreateServerPayload) GetMaintenanceWindow() (res CreateServerPayloadGetMaintenanceWindowRetType) {
+	res, _ = o.GetMaintenanceWindowOk()
+	return
 }
 
 // GetMaintenanceWindowOk returns a tuple with the MaintenanceWindow field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetMaintenanceWindowOk() (*ServerMaintenance, bool) {
-	if o == nil || IsNil(o.MaintenanceWindow) {
-		return nil, false
-	}
-	return o.MaintenanceWindow, true
+func (o *CreateServerPayload) GetMaintenanceWindowOk() (ret CreateServerPayloadGetMaintenanceWindowRetType, ok bool) {
+	return getCreateServerPayloadGetMaintenanceWindowAttributeTypeOk(o.MaintenanceWindow)
 }
 
 // HasMaintenanceWindow returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasMaintenanceWindow() bool {
-	if o != nil && !IsNil(o.MaintenanceWindow) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMaintenanceWindowOk()
+	return ok
 }
 
 // SetMaintenanceWindow gets a reference to the given ServerMaintenance and assigns it to the MaintenanceWindow field.
-func (o *CreateServerPayload) SetMaintenanceWindow(v *ServerMaintenance) {
-	o.MaintenanceWindow = v
+func (o *CreateServerPayload) SetMaintenanceWindow(v CreateServerPayloadGetMaintenanceWindowRetType) {
+	setCreateServerPayloadGetMaintenanceWindowAttributeType(&o.MaintenanceWindow, v)
 }
 
 // GetName returns the Name field value
-func (o *CreateServerPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *CreateServerPayload) GetName() (ret CreateServerPayloadGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateServerPayload) GetNameOk() (ret CreateServerPayloadGetNameRetType, ok bool) {
+	return getCreateServerPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *CreateServerPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateServerPayload) SetName(v CreateServerPayloadGetNameRetType) {
+	setCreateServerPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetNetworking returns the Networking field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetNetworking() *CreateServerPayloadNetworking {
-	if o == nil || IsNil(o.Networking) {
-		var ret *CreateServerPayloadNetworking
-		return ret
-	}
-	return o.Networking
+func (o *CreateServerPayload) GetNetworking() (res CreateServerPayloadGetNetworkingRetType) {
+	res, _ = o.GetNetworkingOk()
+	return
 }
 
 // GetNetworkingOk returns a tuple with the Networking field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetNetworkingOk() (*CreateServerPayloadNetworking, bool) {
-	if o == nil || IsNil(o.Networking) {
-		return nil, false
-	}
-	return o.Networking, true
+func (o *CreateServerPayload) GetNetworkingOk() (ret CreateServerPayloadGetNetworkingRetType, ok bool) {
+	return getCreateServerPayloadGetNetworkingAttributeTypeOk(o.Networking)
 }
 
 // HasNetworking returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasNetworking() bool {
-	if o != nil && !IsNil(o.Networking) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkingOk()
+	return ok
 }
 
 // SetNetworking gets a reference to the given CreateServerPayloadNetworking and assigns it to the Networking field.
-func (o *CreateServerPayload) SetNetworking(v *CreateServerPayloadNetworking) {
-	o.Networking = v
+func (o *CreateServerPayload) SetNetworking(v CreateServerPayloadGetNetworkingRetType) {
+	setCreateServerPayloadGetNetworkingAttributeType(&o.Networking, v)
 }
 
 // GetNics returns the Nics field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetNics() *[]ServerNetwork {
-	if o == nil || IsNil(o.Nics) {
-		var ret *[]ServerNetwork
-		return ret
-	}
-	return o.Nics
+func (o *CreateServerPayload) GetNics() (res CreateServerPayloadGetNicsRetType) {
+	res, _ = o.GetNicsOk()
+	return
 }
 
 // GetNicsOk returns a tuple with the Nics field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetNicsOk() (*[]ServerNetwork, bool) {
-	if o == nil || IsNil(o.Nics) {
-		return nil, false
-	}
-	return o.Nics, true
+func (o *CreateServerPayload) GetNicsOk() (ret CreateServerPayloadGetNicsRetType, ok bool) {
+	return getCreateServerPayloadGetNicsAttributeTypeOk(o.Nics)
 }
 
 // HasNics returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasNics() bool {
-	if o != nil && !IsNil(o.Nics) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNicsOk()
+	return ok
 }
 
 // SetNics gets a reference to the given []ServerNetwork and assigns it to the Nics field.
-func (o *CreateServerPayload) SetNics(v *[]ServerNetwork) {
-	o.Nics = v
+func (o *CreateServerPayload) SetNics(v CreateServerPayloadGetNicsRetType) {
+	setCreateServerPayloadGetNicsAttributeType(&o.Nics, v)
 }
 
 // GetPowerStatus returns the PowerStatus field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetPowerStatus() *string {
-	if o == nil || IsNil(o.PowerStatus) {
-		var ret *string
-		return ret
-	}
-	return o.PowerStatus
+func (o *CreateServerPayload) GetPowerStatus() (res CreateServerPayloadGetPowerStatusRetType) {
+	res, _ = o.GetPowerStatusOk()
+	return
 }
 
 // GetPowerStatusOk returns a tuple with the PowerStatus field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetPowerStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.PowerStatus) {
-		return nil, false
-	}
-	return o.PowerStatus, true
+func (o *CreateServerPayload) GetPowerStatusOk() (ret CreateServerPayloadGetPowerStatusRetType, ok bool) {
+	return getCreateServerPayloadGetPowerStatusAttributeTypeOk(o.PowerStatus)
 }
 
 // HasPowerStatus returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasPowerStatus() bool {
-	if o != nil && !IsNil(o.PowerStatus) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPowerStatusOk()
+	return ok
 }
 
 // SetPowerStatus gets a reference to the given string and assigns it to the PowerStatus field.
-func (o *CreateServerPayload) SetPowerStatus(v *string) {
-	o.PowerStatus = v
+func (o *CreateServerPayload) SetPowerStatus(v CreateServerPayloadGetPowerStatusRetType) {
+	setCreateServerPayloadGetPowerStatusAttributeType(&o.PowerStatus, v)
 }
 
 // GetSecurityGroups returns the SecurityGroups field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetSecurityGroups() *[]string {
-	if o == nil || IsNil(o.SecurityGroups) {
-		var ret *[]string
-		return ret
-	}
-	return o.SecurityGroups
+func (o *CreateServerPayload) GetSecurityGroups() (res CreateServerPayloadGetSecurityGroupsRetType) {
+	res, _ = o.GetSecurityGroupsOk()
+	return
 }
 
 // GetSecurityGroupsOk returns a tuple with the SecurityGroups field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetSecurityGroupsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.SecurityGroups) {
-		return nil, false
-	}
-	return o.SecurityGroups, true
+func (o *CreateServerPayload) GetSecurityGroupsOk() (ret CreateServerPayloadGetSecurityGroupsRetType, ok bool) {
+	return getCreateServerPayloadGetSecurityGroupsAttributeTypeOk(o.SecurityGroups)
 }
 
 // HasSecurityGroups returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasSecurityGroups() bool {
-	if o != nil && !IsNil(o.SecurityGroups) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupsOk()
+	return ok
 }
 
 // SetSecurityGroups gets a reference to the given []string and assigns it to the SecurityGroups field.
-func (o *CreateServerPayload) SetSecurityGroups(v *[]string) {
-	o.SecurityGroups = v
+func (o *CreateServerPayload) SetSecurityGroups(v CreateServerPayloadGetSecurityGroupsRetType) {
+	setCreateServerPayloadGetSecurityGroupsAttributeType(&o.SecurityGroups, v)
 }
 
 // GetServiceAccountMails returns the ServiceAccountMails field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetServiceAccountMails() *[]string {
-	if o == nil || IsNil(o.ServiceAccountMails) {
-		var ret *[]string
-		return ret
-	}
-	return o.ServiceAccountMails
+func (o *CreateServerPayload) GetServiceAccountMails() (res CreateServerPayloadGetServiceAccountMailsRetType) {
+	res, _ = o.GetServiceAccountMailsOk()
+	return
 }
 
 // GetServiceAccountMailsOk returns a tuple with the ServiceAccountMails field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetServiceAccountMailsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.ServiceAccountMails) {
-		return nil, false
-	}
-	return o.ServiceAccountMails, true
+func (o *CreateServerPayload) GetServiceAccountMailsOk() (ret CreateServerPayloadGetServiceAccountMailsRetType, ok bool) {
+	return getCreateServerPayloadGetServiceAccountMailsAttributeTypeOk(o.ServiceAccountMails)
 }
 
 // HasServiceAccountMails returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasServiceAccountMails() bool {
-	if o != nil && !IsNil(o.ServiceAccountMails) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetServiceAccountMailsOk()
+	return ok
 }
 
 // SetServiceAccountMails gets a reference to the given []string and assigns it to the ServiceAccountMails field.
-func (o *CreateServerPayload) SetServiceAccountMails(v *[]string) {
-	o.ServiceAccountMails = v
+func (o *CreateServerPayload) SetServiceAccountMails(v CreateServerPayloadGetServiceAccountMailsRetType) {
+	setCreateServerPayloadGetServiceAccountMailsAttributeType(&o.ServiceAccountMails, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *CreateServerPayload) GetStatus() (res CreateServerPayloadGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *CreateServerPayload) GetStatusOk() (ret CreateServerPayloadGetStatusRetType, ok bool) {
+	return getCreateServerPayloadGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *CreateServerPayload) SetStatus(v *string) {
-	o.Status = v
+func (o *CreateServerPayload) SetStatus(v CreateServerPayloadGetStatusRetType) {
+	setCreateServerPayloadGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *CreateServerPayload) GetUpdatedAt() (res CreateServerPayloadGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *CreateServerPayload) GetUpdatedAtOk() (ret CreateServerPayloadGetUpdatedAtRetType, ok bool) {
+	return getCreateServerPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *CreateServerPayload) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *CreateServerPayload) SetUpdatedAt(v CreateServerPayloadGetUpdatedAtRetType) {
+	setCreateServerPayloadGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 // GetUserData returns the UserData field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetUserData() *string {
-	if o == nil || IsNil(o.UserData) {
-		var ret *string
-		return ret
-	}
-	return o.UserData
+func (o *CreateServerPayload) GetUserData() (res CreateServerPayloadGetUserDataRetType) {
+	res, _ = o.GetUserDataOk()
+	return
 }
 
 // GetUserDataOk returns a tuple with the UserData field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetUserDataOk() (*string, bool) {
-	if o == nil || IsNil(o.UserData) {
-		return nil, false
-	}
-	return o.UserData, true
+func (o *CreateServerPayload) GetUserDataOk() (ret CreateServerPayloadGetUserDataRetType, ok bool) {
+	return getCreateServerPayloadGetUserDataAttributeTypeOk(o.UserData)
 }
 
 // HasUserData returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasUserData() bool {
-	if o != nil && !IsNil(o.UserData) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUserDataOk()
+	return ok
 }
 
 // SetUserData gets a reference to the given string and assigns it to the UserData field.
-func (o *CreateServerPayload) SetUserData(v *string) {
-	o.UserData = v
+func (o *CreateServerPayload) SetUserData(v CreateServerPayloadGetUserDataRetType) {
+	setCreateServerPayloadGetUserDataAttributeType(&o.UserData, v)
 }
 
 // GetVolumes returns the Volumes field value if set, zero value otherwise.
-func (o *CreateServerPayload) GetVolumes() *[]string {
-	if o == nil || IsNil(o.Volumes) {
-		var ret *[]string
-		return ret
-	}
-	return o.Volumes
+func (o *CreateServerPayload) GetVolumes() (res CreateServerPayloadGetVolumesRetType) {
+	res, _ = o.GetVolumesOk()
+	return
 }
 
 // GetVolumesOk returns a tuple with the Volumes field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayload) GetVolumesOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Volumes) {
-		return nil, false
-	}
-	return o.Volumes, true
+func (o *CreateServerPayload) GetVolumesOk() (ret CreateServerPayloadGetVolumesRetType, ok bool) {
+	return getCreateServerPayloadGetVolumesAttributeTypeOk(o.Volumes)
 }
 
 // HasVolumes returns a boolean if a field has been set.
 func (o *CreateServerPayload) HasVolumes() bool {
-	if o != nil && !IsNil(o.Volumes) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVolumesOk()
+	return ok
 }
 
 // SetVolumes gets a reference to the given []string and assigns it to the Volumes field.
-func (o *CreateServerPayload) SetVolumes(v *[]string) {
-	o.Volumes = v
+func (o *CreateServerPayload) SetVolumes(v CreateServerPayloadGetVolumesRetType) {
+	setCreateServerPayloadGetVolumesAttributeType(&o.Volumes, v)
 }
 
 func (o CreateServerPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AffinityGroup) {
-		toSerialize["affinityGroup"] = o.AffinityGroup
+	if val, ok := getCreateServerPayloadGetAffinityGroupAttributeTypeOk(o.AffinityGroup); ok {
+		toSerialize["AffinityGroup"] = val
+	}
+	if val, ok := getCreateServerPayloadGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone); ok {
+		toSerialize["AvailabilityZone"] = val
+	}
+	if val, ok := getCreateServerPayloadGetBootVolumeAttributeTypeOk(o.BootVolume); ok {
+		toSerialize["BootVolume"] = val
 	}
-	if !IsNil(o.AvailabilityZone) {
-		toSerialize["availabilityZone"] = o.AvailabilityZone
+	if val, ok := getCreateServerPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.BootVolume) {
-		toSerialize["bootVolume"] = o.BootVolume
+	if val, ok := getCreateServerPayloadGetErrorMessageAttributeTypeOk(o.ErrorMessage); ok {
+		toSerialize["ErrorMessage"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getCreateServerPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.ErrorMessage) {
-		toSerialize["errorMessage"] = o.ErrorMessage
+	if val, ok := getCreateServerPayloadGetImageIdAttributeTypeOk(o.ImageId); ok {
+		toSerialize["ImageId"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateServerPayloadGetKeypairNameAttributeTypeOk(o.KeypairName); ok {
+		toSerialize["KeypairName"] = val
 	}
-	if !IsNil(o.ImageId) {
-		toSerialize["imageId"] = o.ImageId
+	if val, ok := getCreateServerPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.KeypairName) {
-		toSerialize["keypairName"] = o.KeypairName
+	if val, ok := getCreateServerPayloadGetLaunchedAtAttributeTypeOk(o.LaunchedAt); ok {
+		toSerialize["LaunchedAt"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateServerPayloadGetMachineTypeAttributeTypeOk(o.MachineType); ok {
+		toSerialize["MachineType"] = val
 	}
-	if !IsNil(o.LaunchedAt) {
-		toSerialize["launchedAt"] = o.LaunchedAt
+	if val, ok := getCreateServerPayloadGetMaintenanceWindowAttributeTypeOk(o.MaintenanceWindow); ok {
+		toSerialize["MaintenanceWindow"] = val
 	}
-	toSerialize["machineType"] = o.MachineType
-	if !IsNil(o.MaintenanceWindow) {
-		toSerialize["maintenanceWindow"] = o.MaintenanceWindow
+	if val, ok := getCreateServerPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Networking) {
-		toSerialize["networking"] = o.Networking
+	if val, ok := getCreateServerPayloadGetNetworkingAttributeTypeOk(o.Networking); ok {
+		toSerialize["Networking"] = val
 	}
-	if !IsNil(o.Nics) {
-		toSerialize["nics"] = o.Nics
+	if val, ok := getCreateServerPayloadGetNicsAttributeTypeOk(o.Nics); ok {
+		toSerialize["Nics"] = val
 	}
-	if !IsNil(o.PowerStatus) {
-		toSerialize["powerStatus"] = o.PowerStatus
+	if val, ok := getCreateServerPayloadGetPowerStatusAttributeTypeOk(o.PowerStatus); ok {
+		toSerialize["PowerStatus"] = val
 	}
-	if !IsNil(o.SecurityGroups) {
-		toSerialize["securityGroups"] = o.SecurityGroups
+	if val, ok := getCreateServerPayloadGetSecurityGroupsAttributeTypeOk(o.SecurityGroups); ok {
+		toSerialize["SecurityGroups"] = val
 	}
-	if !IsNil(o.ServiceAccountMails) {
-		toSerialize["serviceAccountMails"] = o.ServiceAccountMails
+	if val, ok := getCreateServerPayloadGetServiceAccountMailsAttributeTypeOk(o.ServiceAccountMails); ok {
+		toSerialize["ServiceAccountMails"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getCreateServerPayloadGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getCreateServerPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
-	if !IsNil(o.UserData) {
-		toSerialize["userData"] = o.UserData
+	if val, ok := getCreateServerPayloadGetUserDataAttributeTypeOk(o.UserData); ok {
+		toSerialize["UserData"] = val
 	}
-	if !IsNil(o.Volumes) {
-		toSerialize["volumes"] = o.Volumes
+	if val, ok := getCreateServerPayloadGetVolumesAttributeTypeOk(o.Volumes); ok {
+		toSerialize["Volumes"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_server_payload_boot_volume.go b/services/iaas/model_create_server_payload_boot_volume.go
index ace4dceb1..707746547 100644
--- a/services/iaas/model_create_server_payload_boot_volume.go
+++ b/services/iaas/model_create_server_payload_boot_volume.go
@@ -17,17 +17,119 @@ import (
 // checks if the CreateServerPayloadBootVolume type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateServerPayloadBootVolume{}
 
+/*
+	types and functions for deleteOnTermination
+*/
+
+// isBoolean
+type CreateServerPayloadBootVolumegetDeleteOnTerminationAttributeType = *bool
+type CreateServerPayloadBootVolumegetDeleteOnTerminationArgType = bool
+type CreateServerPayloadBootVolumegetDeleteOnTerminationRetType = bool
+
+func getCreateServerPayloadBootVolumegetDeleteOnTerminationAttributeTypeOk(arg CreateServerPayloadBootVolumegetDeleteOnTerminationAttributeType) (ret CreateServerPayloadBootVolumegetDeleteOnTerminationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadBootVolumegetDeleteOnTerminationAttributeType(arg *CreateServerPayloadBootVolumegetDeleteOnTerminationAttributeType, val CreateServerPayloadBootVolumegetDeleteOnTerminationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateServerPayloadBootVolumeGetIdAttributeType = *string
+
+func getCreateServerPayloadBootVolumeGetIdAttributeTypeOk(arg CreateServerPayloadBootVolumeGetIdAttributeType) (ret CreateServerPayloadBootVolumeGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadBootVolumeGetIdAttributeType(arg *CreateServerPayloadBootVolumeGetIdAttributeType, val CreateServerPayloadBootVolumeGetIdRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadBootVolumeGetIdArgType = string
+type CreateServerPayloadBootVolumeGetIdRetType = string
+
+/*
+	types and functions for performanceClass
+*/
+
+// isNotNullableString
+type CreateServerPayloadBootVolumeGetPerformanceClassAttributeType = *string
+
+func getCreateServerPayloadBootVolumeGetPerformanceClassAttributeTypeOk(arg CreateServerPayloadBootVolumeGetPerformanceClassAttributeType) (ret CreateServerPayloadBootVolumeGetPerformanceClassRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadBootVolumeGetPerformanceClassAttributeType(arg *CreateServerPayloadBootVolumeGetPerformanceClassAttributeType, val CreateServerPayloadBootVolumeGetPerformanceClassRetType) {
+	*arg = &val
+}
+
+type CreateServerPayloadBootVolumeGetPerformanceClassArgType = string
+type CreateServerPayloadBootVolumeGetPerformanceClassRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type CreateServerPayloadBootVolumeGetSizeAttributeType = *int64
+type CreateServerPayloadBootVolumeGetSizeArgType = int64
+type CreateServerPayloadBootVolumeGetSizeRetType = int64
+
+func getCreateServerPayloadBootVolumeGetSizeAttributeTypeOk(arg CreateServerPayloadBootVolumeGetSizeAttributeType) (ret CreateServerPayloadBootVolumeGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadBootVolumeGetSizeAttributeType(arg *CreateServerPayloadBootVolumeGetSizeAttributeType, val CreateServerPayloadBootVolumeGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for source
+*/
+
+// isModel
+type CreateServerPayloadBootVolumeGetSourceAttributeType = *BootVolumeSource
+type CreateServerPayloadBootVolumeGetSourceArgType = BootVolumeSource
+type CreateServerPayloadBootVolumeGetSourceRetType = BootVolumeSource
+
+func getCreateServerPayloadBootVolumeGetSourceAttributeTypeOk(arg CreateServerPayloadBootVolumeGetSourceAttributeType) (ret CreateServerPayloadBootVolumeGetSourceRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateServerPayloadBootVolumeGetSourceAttributeType(arg *CreateServerPayloadBootVolumeGetSourceAttributeType, val CreateServerPayloadBootVolumeGetSourceRetType) {
+	*arg = &val
+}
+
 // CreateServerPayloadBootVolume struct for CreateServerPayloadBootVolume
 type CreateServerPayloadBootVolume struct {
 	// Delete the volume during the termination of the server. Defaults to false.
-	DeleteOnTermination *bool `json:"deleteOnTermination,omitempty"`
+	DeleteOnTermination CreateServerPayloadBootVolumegetDeleteOnTerminationAttributeType `json:"deleteOnTermination,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateServerPayloadBootVolumeGetIdAttributeType `json:"id,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	PerformanceClass *string `json:"performanceClass,omitempty"`
+	PerformanceClass CreateServerPayloadBootVolumeGetPerformanceClassAttributeType `json:"performanceClass,omitempty"`
 	// Size in Gigabyte.
-	Size   *int64            `json:"size,omitempty"`
-	Source *BootVolumeSource `json:"source,omitempty"`
+	Size   CreateServerPayloadBootVolumeGetSizeAttributeType   `json:"size,omitempty"`
+	Source CreateServerPayloadBootVolumeGetSourceAttributeType `json:"source,omitempty"`
 }
 
 // NewCreateServerPayloadBootVolume instantiates a new CreateServerPayloadBootVolume object
@@ -48,181 +150,136 @@ func NewCreateServerPayloadBootVolumeWithDefaults() *CreateServerPayloadBootVolu
 }
 
 // GetDeleteOnTermination returns the DeleteOnTermination field value if set, zero value otherwise.
-func (o *CreateServerPayloadBootVolume) GetDeleteOnTermination() *bool {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		var ret *bool
-		return ret
-	}
-	return o.DeleteOnTermination
+func (o *CreateServerPayloadBootVolume) GetDeleteOnTermination() (res CreateServerPayloadBootVolumegetDeleteOnTerminationRetType) {
+	res, _ = o.GetDeleteOnTerminationOk()
+	return
 }
 
 // GetDeleteOnTerminationOk returns a tuple with the DeleteOnTermination field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayloadBootVolume) GetDeleteOnTerminationOk() (*bool, bool) {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		return nil, false
-	}
-	return o.DeleteOnTermination, true
+func (o *CreateServerPayloadBootVolume) GetDeleteOnTerminationOk() (ret CreateServerPayloadBootVolumegetDeleteOnTerminationRetType, ok bool) {
+	return getCreateServerPayloadBootVolumegetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination)
 }
 
 // HasDeleteOnTermination returns a boolean if a field has been set.
 func (o *CreateServerPayloadBootVolume) HasDeleteOnTermination() bool {
-	if o != nil && !IsNil(o.DeleteOnTermination) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDeleteOnTerminationOk()
+	return ok
 }
 
 // SetDeleteOnTermination gets a reference to the given bool and assigns it to the DeleteOnTermination field.
-func (o *CreateServerPayloadBootVolume) SetDeleteOnTermination(v *bool) {
-	o.DeleteOnTermination = v
+func (o *CreateServerPayloadBootVolume) SetDeleteOnTermination(v CreateServerPayloadBootVolumegetDeleteOnTerminationRetType) {
+	setCreateServerPayloadBootVolumegetDeleteOnTerminationAttributeType(&o.DeleteOnTermination, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateServerPayloadBootVolume) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateServerPayloadBootVolume) GetId() (res CreateServerPayloadBootVolumeGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayloadBootVolume) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateServerPayloadBootVolume) GetIdOk() (ret CreateServerPayloadBootVolumeGetIdRetType, ok bool) {
+	return getCreateServerPayloadBootVolumeGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateServerPayloadBootVolume) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateServerPayloadBootVolume) SetId(v *string) {
-	o.Id = v
+func (o *CreateServerPayloadBootVolume) SetId(v CreateServerPayloadBootVolumeGetIdRetType) {
+	setCreateServerPayloadBootVolumeGetIdAttributeType(&o.Id, v)
 }
 
 // GetPerformanceClass returns the PerformanceClass field value if set, zero value otherwise.
-func (o *CreateServerPayloadBootVolume) GetPerformanceClass() *string {
-	if o == nil || IsNil(o.PerformanceClass) {
-		var ret *string
-		return ret
-	}
-	return o.PerformanceClass
+func (o *CreateServerPayloadBootVolume) GetPerformanceClass() (res CreateServerPayloadBootVolumeGetPerformanceClassRetType) {
+	res, _ = o.GetPerformanceClassOk()
+	return
 }
 
 // GetPerformanceClassOk returns a tuple with the PerformanceClass field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayloadBootVolume) GetPerformanceClassOk() (*string, bool) {
-	if o == nil || IsNil(o.PerformanceClass) {
-		return nil, false
-	}
-	return o.PerformanceClass, true
+func (o *CreateServerPayloadBootVolume) GetPerformanceClassOk() (ret CreateServerPayloadBootVolumeGetPerformanceClassRetType, ok bool) {
+	return getCreateServerPayloadBootVolumeGetPerformanceClassAttributeTypeOk(o.PerformanceClass)
 }
 
 // HasPerformanceClass returns a boolean if a field has been set.
 func (o *CreateServerPayloadBootVolume) HasPerformanceClass() bool {
-	if o != nil && !IsNil(o.PerformanceClass) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPerformanceClassOk()
+	return ok
 }
 
 // SetPerformanceClass gets a reference to the given string and assigns it to the PerformanceClass field.
-func (o *CreateServerPayloadBootVolume) SetPerformanceClass(v *string) {
-	o.PerformanceClass = v
+func (o *CreateServerPayloadBootVolume) SetPerformanceClass(v CreateServerPayloadBootVolumeGetPerformanceClassRetType) {
+	setCreateServerPayloadBootVolumeGetPerformanceClassAttributeType(&o.PerformanceClass, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *CreateServerPayloadBootVolume) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *CreateServerPayloadBootVolume) GetSize() (res CreateServerPayloadBootVolumeGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayloadBootVolume) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *CreateServerPayloadBootVolume) GetSizeOk() (ret CreateServerPayloadBootVolumeGetSizeRetType, ok bool) {
+	return getCreateServerPayloadBootVolumeGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *CreateServerPayloadBootVolume) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *CreateServerPayloadBootVolume) SetSize(v *int64) {
-	o.Size = v
+func (o *CreateServerPayloadBootVolume) SetSize(v CreateServerPayloadBootVolumeGetSizeRetType) {
+	setCreateServerPayloadBootVolumeGetSizeAttributeType(&o.Size, v)
 }
 
 // GetSource returns the Source field value if set, zero value otherwise.
-func (o *CreateServerPayloadBootVolume) GetSource() *BootVolumeSource {
-	if o == nil || IsNil(o.Source) {
-		var ret *BootVolumeSource
-		return ret
-	}
-	return o.Source
+func (o *CreateServerPayloadBootVolume) GetSource() (res CreateServerPayloadBootVolumeGetSourceRetType) {
+	res, _ = o.GetSourceOk()
+	return
 }
 
 // GetSourceOk returns a tuple with the Source field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateServerPayloadBootVolume) GetSourceOk() (*BootVolumeSource, bool) {
-	if o == nil || IsNil(o.Source) {
-		return nil, false
-	}
-	return o.Source, true
+func (o *CreateServerPayloadBootVolume) GetSourceOk() (ret CreateServerPayloadBootVolumeGetSourceRetType, ok bool) {
+	return getCreateServerPayloadBootVolumeGetSourceAttributeTypeOk(o.Source)
 }
 
 // HasSource returns a boolean if a field has been set.
 func (o *CreateServerPayloadBootVolume) HasSource() bool {
-	if o != nil && !IsNil(o.Source) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSourceOk()
+	return ok
 }
 
 // SetSource gets a reference to the given BootVolumeSource and assigns it to the Source field.
-func (o *CreateServerPayloadBootVolume) SetSource(v *BootVolumeSource) {
-	o.Source = v
+func (o *CreateServerPayloadBootVolume) SetSource(v CreateServerPayloadBootVolumeGetSourceRetType) {
+	setCreateServerPayloadBootVolumeGetSourceAttributeType(&o.Source, v)
 }
 
 func (o CreateServerPayloadBootVolume) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DeleteOnTermination) {
-		toSerialize["deleteOnTermination"] = o.DeleteOnTermination
+	if val, ok := getCreateServerPayloadBootVolumegetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination); ok {
+		toSerialize["DeleteOnTermination"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateServerPayloadBootVolumeGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.PerformanceClass) {
-		toSerialize["performanceClass"] = o.PerformanceClass
+	if val, ok := getCreateServerPayloadBootVolumeGetPerformanceClassAttributeTypeOk(o.PerformanceClass); ok {
+		toSerialize["PerformanceClass"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getCreateServerPayloadBootVolumeGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Source) {
-		toSerialize["source"] = o.Source
+	if val, ok := getCreateServerPayloadBootVolumeGetSourceAttributeTypeOk(o.Source); ok {
+		toSerialize["Source"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_create_snapshot_payload.go b/services/iaas/model_create_snapshot_payload.go
index f361f0340..de8e8f954 100644
--- a/services/iaas/model_create_snapshot_payload.go
+++ b/services/iaas/model_create_snapshot_payload.go
@@ -18,25 +18,189 @@ import (
 // checks if the CreateSnapshotPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateSnapshotPayload{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type CreateSnapshotPayloadGetCreatedAtAttributeType = *time.Time
+type CreateSnapshotPayloadGetCreatedAtArgType = time.Time
+type CreateSnapshotPayloadGetCreatedAtRetType = time.Time
+
+func getCreateSnapshotPayloadGetCreatedAtAttributeTypeOk(arg CreateSnapshotPayloadGetCreatedAtAttributeType) (ret CreateSnapshotPayloadGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetCreatedAtAttributeType(arg *CreateSnapshotPayloadGetCreatedAtAttributeType, val CreateSnapshotPayloadGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateSnapshotPayloadGetIdAttributeType = *string
+
+func getCreateSnapshotPayloadGetIdAttributeTypeOk(arg CreateSnapshotPayloadGetIdAttributeType) (ret CreateSnapshotPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetIdAttributeType(arg *CreateSnapshotPayloadGetIdAttributeType, val CreateSnapshotPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateSnapshotPayloadGetIdArgType = string
+type CreateSnapshotPayloadGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateSnapshotPayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateSnapshotPayloadGetLabelsArgType = map[string]interface{}
+type CreateSnapshotPayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateSnapshotPayloadGetLabelsAttributeTypeOk(arg CreateSnapshotPayloadGetLabelsAttributeType) (ret CreateSnapshotPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetLabelsAttributeType(arg *CreateSnapshotPayloadGetLabelsAttributeType, val CreateSnapshotPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateSnapshotPayloadGetNameAttributeType = *string
+
+func getCreateSnapshotPayloadGetNameAttributeTypeOk(arg CreateSnapshotPayloadGetNameAttributeType) (ret CreateSnapshotPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetNameAttributeType(arg *CreateSnapshotPayloadGetNameAttributeType, val CreateSnapshotPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateSnapshotPayloadGetNameArgType = string
+type CreateSnapshotPayloadGetNameRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type CreateSnapshotPayloadGetSizeAttributeType = *int64
+type CreateSnapshotPayloadGetSizeArgType = int64
+type CreateSnapshotPayloadGetSizeRetType = int64
+
+func getCreateSnapshotPayloadGetSizeAttributeTypeOk(arg CreateSnapshotPayloadGetSizeAttributeType) (ret CreateSnapshotPayloadGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetSizeAttributeType(arg *CreateSnapshotPayloadGetSizeAttributeType, val CreateSnapshotPayloadGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type CreateSnapshotPayloadGetStatusAttributeType = *string
+
+func getCreateSnapshotPayloadGetStatusAttributeTypeOk(arg CreateSnapshotPayloadGetStatusAttributeType) (ret CreateSnapshotPayloadGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetStatusAttributeType(arg *CreateSnapshotPayloadGetStatusAttributeType, val CreateSnapshotPayloadGetStatusRetType) {
+	*arg = &val
+}
+
+type CreateSnapshotPayloadGetStatusArgType = string
+type CreateSnapshotPayloadGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type CreateSnapshotPayloadGetUpdatedAtAttributeType = *time.Time
+type CreateSnapshotPayloadGetUpdatedAtArgType = time.Time
+type CreateSnapshotPayloadGetUpdatedAtRetType = time.Time
+
+func getCreateSnapshotPayloadGetUpdatedAtAttributeTypeOk(arg CreateSnapshotPayloadGetUpdatedAtAttributeType) (ret CreateSnapshotPayloadGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetUpdatedAtAttributeType(arg *CreateSnapshotPayloadGetUpdatedAtAttributeType, val CreateSnapshotPayloadGetUpdatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for volumeId
+*/
+
+// isNotNullableString
+type CreateSnapshotPayloadGetVolumeIdAttributeType = *string
+
+func getCreateSnapshotPayloadGetVolumeIdAttributeTypeOk(arg CreateSnapshotPayloadGetVolumeIdAttributeType) (ret CreateSnapshotPayloadGetVolumeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateSnapshotPayloadGetVolumeIdAttributeType(arg *CreateSnapshotPayloadGetVolumeIdAttributeType, val CreateSnapshotPayloadGetVolumeIdRetType) {
+	*arg = &val
+}
+
+type CreateSnapshotPayloadGetVolumeIdArgType = string
+type CreateSnapshotPayloadGetVolumeIdRetType = string
+
 // CreateSnapshotPayload Object that represents a snapshot.
 type CreateSnapshotPayload struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt CreateSnapshotPayloadGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id CreateSnapshotPayloadGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateSnapshotPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name CreateSnapshotPayloadGetNameAttributeType `json:"name,omitempty"`
 	// Size in Gigabyte.
-	Size *int64 `json:"size,omitempty"`
+	Size CreateSnapshotPayloadGetSizeAttributeType `json:"size,omitempty"`
 	// The status of a snapshot object. Possible values: `AVAILABLE`, `BACKING-UP`, `CREATING`, `DELETED`, `DELETING`, `ERROR`, `RESTORING`, `UNMANAGING`, `UPDATING`.
-	Status *string `json:"status,omitempty"`
+	Status CreateSnapshotPayloadGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt CreateSnapshotPayloadGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	VolumeId *string `json:"volumeId"`
+	VolumeId CreateSnapshotPayloadGetVolumeIdAttributeType `json:"volumeId"`
 }
 
 type _CreateSnapshotPayload CreateSnapshotPayload
@@ -45,9 +209,9 @@ type _CreateSnapshotPayload CreateSnapshotPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateSnapshotPayload(volumeId *string) *CreateSnapshotPayload {
+func NewCreateSnapshotPayload(volumeId CreateSnapshotPayloadGetVolumeIdArgType) *CreateSnapshotPayload {
 	this := CreateSnapshotPayload{}
-	this.VolumeId = volumeId
+	setCreateSnapshotPayloadGetVolumeIdAttributeType(&this.VolumeId, volumeId)
 	return &this
 }
 
@@ -60,277 +224,209 @@ func NewCreateSnapshotPayloadWithDefaults() *CreateSnapshotPayload {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *CreateSnapshotPayload) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *CreateSnapshotPayload) GetCreatedAt() (res CreateSnapshotPayloadGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *CreateSnapshotPayload) GetCreatedAtOk() (ret CreateSnapshotPayloadGetCreatedAtRetType, ok bool) {
+	return getCreateSnapshotPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *CreateSnapshotPayload) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *CreateSnapshotPayload) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *CreateSnapshotPayload) SetCreatedAt(v CreateSnapshotPayloadGetCreatedAtRetType) {
+	setCreateSnapshotPayloadGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateSnapshotPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateSnapshotPayload) GetId() (res CreateSnapshotPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateSnapshotPayload) GetIdOk() (ret CreateSnapshotPayloadGetIdRetType, ok bool) {
+	return getCreateSnapshotPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateSnapshotPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateSnapshotPayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateSnapshotPayload) SetId(v CreateSnapshotPayloadGetIdRetType) {
+	setCreateSnapshotPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateSnapshotPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateSnapshotPayload) GetLabels() (res CreateSnapshotPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateSnapshotPayload) GetLabelsOk() (ret CreateSnapshotPayloadGetLabelsRetType, ok bool) {
+	return getCreateSnapshotPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateSnapshotPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateSnapshotPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateSnapshotPayload) SetLabels(v CreateSnapshotPayloadGetLabelsRetType) {
+	setCreateSnapshotPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *CreateSnapshotPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *CreateSnapshotPayload) GetName() (res CreateSnapshotPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateSnapshotPayload) GetNameOk() (ret CreateSnapshotPayloadGetNameRetType, ok bool) {
+	return getCreateSnapshotPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *CreateSnapshotPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *CreateSnapshotPayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateSnapshotPayload) SetName(v CreateSnapshotPayloadGetNameRetType) {
+	setCreateSnapshotPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *CreateSnapshotPayload) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *CreateSnapshotPayload) GetSize() (res CreateSnapshotPayloadGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *CreateSnapshotPayload) GetSizeOk() (ret CreateSnapshotPayloadGetSizeRetType, ok bool) {
+	return getCreateSnapshotPayloadGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *CreateSnapshotPayload) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *CreateSnapshotPayload) SetSize(v *int64) {
-	o.Size = v
+func (o *CreateSnapshotPayload) SetSize(v CreateSnapshotPayloadGetSizeRetType) {
+	setCreateSnapshotPayloadGetSizeAttributeType(&o.Size, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *CreateSnapshotPayload) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *CreateSnapshotPayload) GetStatus() (res CreateSnapshotPayloadGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *CreateSnapshotPayload) GetStatusOk() (ret CreateSnapshotPayloadGetStatusRetType, ok bool) {
+	return getCreateSnapshotPayloadGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *CreateSnapshotPayload) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *CreateSnapshotPayload) SetStatus(v *string) {
-	o.Status = v
+func (o *CreateSnapshotPayload) SetStatus(v CreateSnapshotPayloadGetStatusRetType) {
+	setCreateSnapshotPayloadGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *CreateSnapshotPayload) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *CreateSnapshotPayload) GetUpdatedAt() (res CreateSnapshotPayloadGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *CreateSnapshotPayload) GetUpdatedAtOk() (ret CreateSnapshotPayloadGetUpdatedAtRetType, ok bool) {
+	return getCreateSnapshotPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *CreateSnapshotPayload) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *CreateSnapshotPayload) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *CreateSnapshotPayload) SetUpdatedAt(v CreateSnapshotPayloadGetUpdatedAtRetType) {
+	setCreateSnapshotPayloadGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 // GetVolumeId returns the VolumeId field value
-func (o *CreateSnapshotPayload) GetVolumeId() *string {
-	if o == nil || IsNil(o.VolumeId) {
-		var ret *string
-		return ret
-	}
-
-	return o.VolumeId
+func (o *CreateSnapshotPayload) GetVolumeId() (ret CreateSnapshotPayloadGetVolumeIdRetType) {
+	ret, _ = o.GetVolumeIdOk()
+	return ret
 }
 
 // GetVolumeIdOk returns a tuple with the VolumeId field value
 // and a boolean to check if the value has been set.
-func (o *CreateSnapshotPayload) GetVolumeIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.VolumeId, true
+func (o *CreateSnapshotPayload) GetVolumeIdOk() (ret CreateSnapshotPayloadGetVolumeIdRetType, ok bool) {
+	return getCreateSnapshotPayloadGetVolumeIdAttributeTypeOk(o.VolumeId)
 }
 
 // SetVolumeId sets field value
-func (o *CreateSnapshotPayload) SetVolumeId(v *string) {
-	o.VolumeId = v
+func (o *CreateSnapshotPayload) SetVolumeId(v CreateSnapshotPayloadGetVolumeIdRetType) {
+	setCreateSnapshotPayloadGetVolumeIdAttributeType(&o.VolumeId, v)
 }
 
 func (o CreateSnapshotPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getCreateSnapshotPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getCreateSnapshotPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateSnapshotPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateSnapshotPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getCreateSnapshotPayloadGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getCreateSnapshotPayloadGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getCreateSnapshotPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getCreateSnapshotPayloadGetVolumeIdAttributeTypeOk(o.VolumeId); ok {
+		toSerialize["VolumeId"] = val
 	}
-	toSerialize["volumeId"] = o.VolumeId
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_create_volume_payload.go b/services/iaas/model_create_volume_payload.go
index 6c8238c21..48351cb99 100644
--- a/services/iaas/model_create_volume_payload.go
+++ b/services/iaas/model_create_volume_payload.go
@@ -18,35 +18,322 @@ import (
 // checks if the CreateVolumePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &CreateVolumePayload{}
 
+/*
+	types and functions for availabilityZone
+*/
+
+// isNotNullableString
+type CreateVolumePayloadGetAvailabilityZoneAttributeType = *string
+
+func getCreateVolumePayloadGetAvailabilityZoneAttributeTypeOk(arg CreateVolumePayloadGetAvailabilityZoneAttributeType) (ret CreateVolumePayloadGetAvailabilityZoneRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetAvailabilityZoneAttributeType(arg *CreateVolumePayloadGetAvailabilityZoneAttributeType, val CreateVolumePayloadGetAvailabilityZoneRetType) {
+	*arg = &val
+}
+
+type CreateVolumePayloadGetAvailabilityZoneArgType = string
+type CreateVolumePayloadGetAvailabilityZoneRetType = string
+
+/*
+	types and functions for bootable
+*/
+
+// isBoolean
+type CreateVolumePayloadgetBootableAttributeType = *bool
+type CreateVolumePayloadgetBootableArgType = bool
+type CreateVolumePayloadgetBootableRetType = bool
+
+func getCreateVolumePayloadgetBootableAttributeTypeOk(arg CreateVolumePayloadgetBootableAttributeType) (ret CreateVolumePayloadgetBootableRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadgetBootableAttributeType(arg *CreateVolumePayloadgetBootableAttributeType, val CreateVolumePayloadgetBootableRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type CreateVolumePayloadGetCreatedAtAttributeType = *time.Time
+type CreateVolumePayloadGetCreatedAtArgType = time.Time
+type CreateVolumePayloadGetCreatedAtRetType = time.Time
+
+func getCreateVolumePayloadGetCreatedAtAttributeTypeOk(arg CreateVolumePayloadGetCreatedAtAttributeType) (ret CreateVolumePayloadGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetCreatedAtAttributeType(arg *CreateVolumePayloadGetCreatedAtAttributeType, val CreateVolumePayloadGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type CreateVolumePayloadGetDescriptionAttributeType = *string
+
+func getCreateVolumePayloadGetDescriptionAttributeTypeOk(arg CreateVolumePayloadGetDescriptionAttributeType) (ret CreateVolumePayloadGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetDescriptionAttributeType(arg *CreateVolumePayloadGetDescriptionAttributeType, val CreateVolumePayloadGetDescriptionRetType) {
+	*arg = &val
+}
+
+type CreateVolumePayloadGetDescriptionArgType = string
+type CreateVolumePayloadGetDescriptionRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type CreateVolumePayloadGetIdAttributeType = *string
+
+func getCreateVolumePayloadGetIdAttributeTypeOk(arg CreateVolumePayloadGetIdAttributeType) (ret CreateVolumePayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetIdAttributeType(arg *CreateVolumePayloadGetIdAttributeType, val CreateVolumePayloadGetIdRetType) {
+	*arg = &val
+}
+
+type CreateVolumePayloadGetIdArgType = string
+type CreateVolumePayloadGetIdRetType = string
+
+/*
+	types and functions for imageConfig
+*/
+
+// isModel
+type CreateVolumePayloadGetImageConfigAttributeType = *ImageConfig
+type CreateVolumePayloadGetImageConfigArgType = ImageConfig
+type CreateVolumePayloadGetImageConfigRetType = ImageConfig
+
+func getCreateVolumePayloadGetImageConfigAttributeTypeOk(arg CreateVolumePayloadGetImageConfigAttributeType) (ret CreateVolumePayloadGetImageConfigRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetImageConfigAttributeType(arg *CreateVolumePayloadGetImageConfigAttributeType, val CreateVolumePayloadGetImageConfigRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type CreateVolumePayloadGetLabelsAttributeType = *map[string]interface{}
+type CreateVolumePayloadGetLabelsArgType = map[string]interface{}
+type CreateVolumePayloadGetLabelsRetType = map[string]interface{}
+
+func getCreateVolumePayloadGetLabelsAttributeTypeOk(arg CreateVolumePayloadGetLabelsAttributeType) (ret CreateVolumePayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetLabelsAttributeType(arg *CreateVolumePayloadGetLabelsAttributeType, val CreateVolumePayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type CreateVolumePayloadGetNameAttributeType = *string
+
+func getCreateVolumePayloadGetNameAttributeTypeOk(arg CreateVolumePayloadGetNameAttributeType) (ret CreateVolumePayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetNameAttributeType(arg *CreateVolumePayloadGetNameAttributeType, val CreateVolumePayloadGetNameRetType) {
+	*arg = &val
+}
+
+type CreateVolumePayloadGetNameArgType = string
+type CreateVolumePayloadGetNameRetType = string
+
+/*
+	types and functions for performanceClass
+*/
+
+// isNotNullableString
+type CreateVolumePayloadGetPerformanceClassAttributeType = *string
+
+func getCreateVolumePayloadGetPerformanceClassAttributeTypeOk(arg CreateVolumePayloadGetPerformanceClassAttributeType) (ret CreateVolumePayloadGetPerformanceClassRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetPerformanceClassAttributeType(arg *CreateVolumePayloadGetPerformanceClassAttributeType, val CreateVolumePayloadGetPerformanceClassRetType) {
+	*arg = &val
+}
+
+type CreateVolumePayloadGetPerformanceClassArgType = string
+type CreateVolumePayloadGetPerformanceClassRetType = string
+
+/*
+	types and functions for serverId
+*/
+
+// isNotNullableString
+type CreateVolumePayloadGetServerIdAttributeType = *string
+
+func getCreateVolumePayloadGetServerIdAttributeTypeOk(arg CreateVolumePayloadGetServerIdAttributeType) (ret CreateVolumePayloadGetServerIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetServerIdAttributeType(arg *CreateVolumePayloadGetServerIdAttributeType, val CreateVolumePayloadGetServerIdRetType) {
+	*arg = &val
+}
+
+type CreateVolumePayloadGetServerIdArgType = string
+type CreateVolumePayloadGetServerIdRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type CreateVolumePayloadGetSizeAttributeType = *int64
+type CreateVolumePayloadGetSizeArgType = int64
+type CreateVolumePayloadGetSizeRetType = int64
+
+func getCreateVolumePayloadGetSizeAttributeTypeOk(arg CreateVolumePayloadGetSizeAttributeType) (ret CreateVolumePayloadGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetSizeAttributeType(arg *CreateVolumePayloadGetSizeAttributeType, val CreateVolumePayloadGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for source
+*/
+
+// isModel
+type CreateVolumePayloadGetSourceAttributeType = *VolumeSource
+type CreateVolumePayloadGetSourceArgType = VolumeSource
+type CreateVolumePayloadGetSourceRetType = VolumeSource
+
+func getCreateVolumePayloadGetSourceAttributeTypeOk(arg CreateVolumePayloadGetSourceAttributeType) (ret CreateVolumePayloadGetSourceRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetSourceAttributeType(arg *CreateVolumePayloadGetSourceAttributeType, val CreateVolumePayloadGetSourceRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type CreateVolumePayloadGetStatusAttributeType = *string
+
+func getCreateVolumePayloadGetStatusAttributeTypeOk(arg CreateVolumePayloadGetStatusAttributeType) (ret CreateVolumePayloadGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetStatusAttributeType(arg *CreateVolumePayloadGetStatusAttributeType, val CreateVolumePayloadGetStatusRetType) {
+	*arg = &val
+}
+
+type CreateVolumePayloadGetStatusArgType = string
+type CreateVolumePayloadGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type CreateVolumePayloadGetUpdatedAtAttributeType = *time.Time
+type CreateVolumePayloadGetUpdatedAtArgType = time.Time
+type CreateVolumePayloadGetUpdatedAtRetType = time.Time
+
+func getCreateVolumePayloadGetUpdatedAtAttributeTypeOk(arg CreateVolumePayloadGetUpdatedAtAttributeType) (ret CreateVolumePayloadGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setCreateVolumePayloadGetUpdatedAtAttributeType(arg *CreateVolumePayloadGetUpdatedAtAttributeType, val CreateVolumePayloadGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // CreateVolumePayload Object that represents a volume and its parameters. Used for Creating and returning (get/list).
 type CreateVolumePayload struct {
 	// Object that represents an availability zone.
 	// REQUIRED
-	AvailabilityZone *string `json:"availabilityZone"`
+	AvailabilityZone CreateVolumePayloadGetAvailabilityZoneAttributeType `json:"availabilityZone"`
 	// Indicates if a volume is bootable.
-	Bootable *bool `json:"bootable,omitempty"`
+	Bootable CreateVolumePayloadgetBootableAttributeType `json:"bootable,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt CreateVolumePayloadGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description CreateVolumePayloadGetDescriptionAttributeType `json:"description,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id          *string      `json:"id,omitempty"`
-	ImageConfig *ImageConfig `json:"imageConfig,omitempty"`
+	Id          CreateVolumePayloadGetIdAttributeType          `json:"id,omitempty"`
+	ImageConfig CreateVolumePayloadGetImageConfigAttributeType `json:"imageConfig,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels CreateVolumePayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name CreateVolumePayloadGetNameAttributeType `json:"name,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	PerformanceClass *string `json:"performanceClass,omitempty"`
+	PerformanceClass CreateVolumePayloadGetPerformanceClassAttributeType `json:"performanceClass,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ServerId *string `json:"serverId,omitempty"`
+	ServerId CreateVolumePayloadGetServerIdAttributeType `json:"serverId,omitempty"`
 	// Size in Gigabyte.
-	Size   *int64        `json:"size,omitempty"`
-	Source *VolumeSource `json:"source,omitempty"`
+	Size   CreateVolumePayloadGetSizeAttributeType   `json:"size,omitempty"`
+	Source CreateVolumePayloadGetSourceAttributeType `json:"source,omitempty"`
 	// The status of a volume object. Possible values: `ATTACHED`, `ATTACHING`, `AVAILABLE`, `AWAITING-TRANSFER`, `BACKING-UP`, `CREATING`, `DELETED`, `DELETING`, `DETACHING`, `DOWNLOADING`, `ERROR`, `ERROR_BACKING-UP`, `ERROR_DELETING`, `ERROR_RESIZING`, `ERROR_RESTORING-BACKUP`, `MAINTENANCE`, `RESERVED`, `RESIZING`, `RESTORING-BACKUP`, `RETYPING`, `UPLOADING`.
-	Status *string `json:"status,omitempty"`
+	Status CreateVolumePayloadGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt CreateVolumePayloadGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _CreateVolumePayload CreateVolumePayload
@@ -55,9 +342,9 @@ type _CreateVolumePayload CreateVolumePayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewCreateVolumePayload(availabilityZone *string) *CreateVolumePayload {
+func NewCreateVolumePayload(availabilityZone CreateVolumePayloadGetAvailabilityZoneArgType) *CreateVolumePayload {
 	this := CreateVolumePayload{}
-	this.AvailabilityZone = availabilityZone
+	setCreateVolumePayloadGetAvailabilityZoneAttributeType(&this.AvailabilityZone, availabilityZone)
 	return &this
 }
 
@@ -70,486 +357,364 @@ func NewCreateVolumePayloadWithDefaults() *CreateVolumePayload {
 }
 
 // GetAvailabilityZone returns the AvailabilityZone field value
-func (o *CreateVolumePayload) GetAvailabilityZone() *string {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		var ret *string
-		return ret
-	}
-
-	return o.AvailabilityZone
+func (o *CreateVolumePayload) GetAvailabilityZone() (ret CreateVolumePayloadGetAvailabilityZoneRetType) {
+	ret, _ = o.GetAvailabilityZoneOk()
+	return ret
 }
 
 // GetAvailabilityZoneOk returns a tuple with the AvailabilityZone field value
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetAvailabilityZoneOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.AvailabilityZone, true
+func (o *CreateVolumePayload) GetAvailabilityZoneOk() (ret CreateVolumePayloadGetAvailabilityZoneRetType, ok bool) {
+	return getCreateVolumePayloadGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone)
 }
 
 // SetAvailabilityZone sets field value
-func (o *CreateVolumePayload) SetAvailabilityZone(v *string) {
-	o.AvailabilityZone = v
+func (o *CreateVolumePayload) SetAvailabilityZone(v CreateVolumePayloadGetAvailabilityZoneRetType) {
+	setCreateVolumePayloadGetAvailabilityZoneAttributeType(&o.AvailabilityZone, v)
 }
 
 // GetBootable returns the Bootable field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetBootable() *bool {
-	if o == nil || IsNil(o.Bootable) {
-		var ret *bool
-		return ret
-	}
-	return o.Bootable
+func (o *CreateVolumePayload) GetBootable() (res CreateVolumePayloadgetBootableRetType) {
+	res, _ = o.GetBootableOk()
+	return
 }
 
 // GetBootableOk returns a tuple with the Bootable field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetBootableOk() (*bool, bool) {
-	if o == nil || IsNil(o.Bootable) {
-		return nil, false
-	}
-	return o.Bootable, true
+func (o *CreateVolumePayload) GetBootableOk() (ret CreateVolumePayloadgetBootableRetType, ok bool) {
+	return getCreateVolumePayloadgetBootableAttributeTypeOk(o.Bootable)
 }
 
 // HasBootable returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasBootable() bool {
-	if o != nil && !IsNil(o.Bootable) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetBootableOk()
+	return ok
 }
 
 // SetBootable gets a reference to the given bool and assigns it to the Bootable field.
-func (o *CreateVolumePayload) SetBootable(v *bool) {
-	o.Bootable = v
+func (o *CreateVolumePayload) SetBootable(v CreateVolumePayloadgetBootableRetType) {
+	setCreateVolumePayloadgetBootableAttributeType(&o.Bootable, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *CreateVolumePayload) GetCreatedAt() (res CreateVolumePayloadGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *CreateVolumePayload) GetCreatedAtOk() (ret CreateVolumePayloadGetCreatedAtRetType, ok bool) {
+	return getCreateVolumePayloadGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *CreateVolumePayload) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *CreateVolumePayload) SetCreatedAt(v CreateVolumePayloadGetCreatedAtRetType) {
+	setCreateVolumePayloadGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *CreateVolumePayload) GetDescription() (res CreateVolumePayloadGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *CreateVolumePayload) GetDescriptionOk() (ret CreateVolumePayloadGetDescriptionRetType, ok bool) {
+	return getCreateVolumePayloadGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *CreateVolumePayload) SetDescription(v *string) {
-	o.Description = v
+func (o *CreateVolumePayload) SetDescription(v CreateVolumePayloadGetDescriptionRetType) {
+	setCreateVolumePayloadGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *CreateVolumePayload) GetId() (res CreateVolumePayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *CreateVolumePayload) GetIdOk() (ret CreateVolumePayloadGetIdRetType, ok bool) {
+	return getCreateVolumePayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *CreateVolumePayload) SetId(v *string) {
-	o.Id = v
+func (o *CreateVolumePayload) SetId(v CreateVolumePayloadGetIdRetType) {
+	setCreateVolumePayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetImageConfig returns the ImageConfig field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetImageConfig() *ImageConfig {
-	if o == nil || IsNil(o.ImageConfig) {
-		var ret *ImageConfig
-		return ret
-	}
-	return o.ImageConfig
+func (o *CreateVolumePayload) GetImageConfig() (res CreateVolumePayloadGetImageConfigRetType) {
+	res, _ = o.GetImageConfigOk()
+	return
 }
 
 // GetImageConfigOk returns a tuple with the ImageConfig field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetImageConfigOk() (*ImageConfig, bool) {
-	if o == nil || IsNil(o.ImageConfig) {
-		return nil, false
-	}
-	return o.ImageConfig, true
+func (o *CreateVolumePayload) GetImageConfigOk() (ret CreateVolumePayloadGetImageConfigRetType, ok bool) {
+	return getCreateVolumePayloadGetImageConfigAttributeTypeOk(o.ImageConfig)
 }
 
 // HasImageConfig returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasImageConfig() bool {
-	if o != nil && !IsNil(o.ImageConfig) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetImageConfigOk()
+	return ok
 }
 
 // SetImageConfig gets a reference to the given ImageConfig and assigns it to the ImageConfig field.
-func (o *CreateVolumePayload) SetImageConfig(v *ImageConfig) {
-	o.ImageConfig = v
+func (o *CreateVolumePayload) SetImageConfig(v CreateVolumePayloadGetImageConfigRetType) {
+	setCreateVolumePayloadGetImageConfigAttributeType(&o.ImageConfig, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *CreateVolumePayload) GetLabels() (res CreateVolumePayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *CreateVolumePayload) GetLabelsOk() (ret CreateVolumePayloadGetLabelsRetType, ok bool) {
+	return getCreateVolumePayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *CreateVolumePayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *CreateVolumePayload) SetLabels(v CreateVolumePayloadGetLabelsRetType) {
+	setCreateVolumePayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *CreateVolumePayload) GetName() (res CreateVolumePayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *CreateVolumePayload) GetNameOk() (ret CreateVolumePayloadGetNameRetType, ok bool) {
+	return getCreateVolumePayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *CreateVolumePayload) SetName(v *string) {
-	o.Name = v
+func (o *CreateVolumePayload) SetName(v CreateVolumePayloadGetNameRetType) {
+	setCreateVolumePayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetPerformanceClass returns the PerformanceClass field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetPerformanceClass() *string {
-	if o == nil || IsNil(o.PerformanceClass) {
-		var ret *string
-		return ret
-	}
-	return o.PerformanceClass
+func (o *CreateVolumePayload) GetPerformanceClass() (res CreateVolumePayloadGetPerformanceClassRetType) {
+	res, _ = o.GetPerformanceClassOk()
+	return
 }
 
 // GetPerformanceClassOk returns a tuple with the PerformanceClass field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetPerformanceClassOk() (*string, bool) {
-	if o == nil || IsNil(o.PerformanceClass) {
-		return nil, false
-	}
-	return o.PerformanceClass, true
+func (o *CreateVolumePayload) GetPerformanceClassOk() (ret CreateVolumePayloadGetPerformanceClassRetType, ok bool) {
+	return getCreateVolumePayloadGetPerformanceClassAttributeTypeOk(o.PerformanceClass)
 }
 
 // HasPerformanceClass returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasPerformanceClass() bool {
-	if o != nil && !IsNil(o.PerformanceClass) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPerformanceClassOk()
+	return ok
 }
 
 // SetPerformanceClass gets a reference to the given string and assigns it to the PerformanceClass field.
-func (o *CreateVolumePayload) SetPerformanceClass(v *string) {
-	o.PerformanceClass = v
+func (o *CreateVolumePayload) SetPerformanceClass(v CreateVolumePayloadGetPerformanceClassRetType) {
+	setCreateVolumePayloadGetPerformanceClassAttributeType(&o.PerformanceClass, v)
 }
 
 // GetServerId returns the ServerId field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetServerId() *string {
-	if o == nil || IsNil(o.ServerId) {
-		var ret *string
-		return ret
-	}
-	return o.ServerId
+func (o *CreateVolumePayload) GetServerId() (res CreateVolumePayloadGetServerIdRetType) {
+	res, _ = o.GetServerIdOk()
+	return
 }
 
 // GetServerIdOk returns a tuple with the ServerId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetServerIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ServerId) {
-		return nil, false
-	}
-	return o.ServerId, true
+func (o *CreateVolumePayload) GetServerIdOk() (ret CreateVolumePayloadGetServerIdRetType, ok bool) {
+	return getCreateVolumePayloadGetServerIdAttributeTypeOk(o.ServerId)
 }
 
 // HasServerId returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasServerId() bool {
-	if o != nil && !IsNil(o.ServerId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetServerIdOk()
+	return ok
 }
 
 // SetServerId gets a reference to the given string and assigns it to the ServerId field.
-func (o *CreateVolumePayload) SetServerId(v *string) {
-	o.ServerId = v
+func (o *CreateVolumePayload) SetServerId(v CreateVolumePayloadGetServerIdRetType) {
+	setCreateVolumePayloadGetServerIdAttributeType(&o.ServerId, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *CreateVolumePayload) GetSize() (res CreateVolumePayloadGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *CreateVolumePayload) GetSizeOk() (ret CreateVolumePayloadGetSizeRetType, ok bool) {
+	return getCreateVolumePayloadGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *CreateVolumePayload) SetSize(v *int64) {
-	o.Size = v
+func (o *CreateVolumePayload) SetSize(v CreateVolumePayloadGetSizeRetType) {
+	setCreateVolumePayloadGetSizeAttributeType(&o.Size, v)
 }
 
 // GetSource returns the Source field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetSource() *VolumeSource {
-	if o == nil || IsNil(o.Source) {
-		var ret *VolumeSource
-		return ret
-	}
-	return o.Source
+func (o *CreateVolumePayload) GetSource() (res CreateVolumePayloadGetSourceRetType) {
+	res, _ = o.GetSourceOk()
+	return
 }
 
 // GetSourceOk returns a tuple with the Source field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetSourceOk() (*VolumeSource, bool) {
-	if o == nil || IsNil(o.Source) {
-		return nil, false
-	}
-	return o.Source, true
+func (o *CreateVolumePayload) GetSourceOk() (ret CreateVolumePayloadGetSourceRetType, ok bool) {
+	return getCreateVolumePayloadGetSourceAttributeTypeOk(o.Source)
 }
 
 // HasSource returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasSource() bool {
-	if o != nil && !IsNil(o.Source) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSourceOk()
+	return ok
 }
 
 // SetSource gets a reference to the given VolumeSource and assigns it to the Source field.
-func (o *CreateVolumePayload) SetSource(v *VolumeSource) {
-	o.Source = v
+func (o *CreateVolumePayload) SetSource(v CreateVolumePayloadGetSourceRetType) {
+	setCreateVolumePayloadGetSourceAttributeType(&o.Source, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *CreateVolumePayload) GetStatus() (res CreateVolumePayloadGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *CreateVolumePayload) GetStatusOk() (ret CreateVolumePayloadGetStatusRetType, ok bool) {
+	return getCreateVolumePayloadGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *CreateVolumePayload) SetStatus(v *string) {
-	o.Status = v
+func (o *CreateVolumePayload) SetStatus(v CreateVolumePayloadGetStatusRetType) {
+	setCreateVolumePayloadGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *CreateVolumePayload) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *CreateVolumePayload) GetUpdatedAt() (res CreateVolumePayloadGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *CreateVolumePayload) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *CreateVolumePayload) GetUpdatedAtOk() (ret CreateVolumePayloadGetUpdatedAtRetType, ok bool) {
+	return getCreateVolumePayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *CreateVolumePayload) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *CreateVolumePayload) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *CreateVolumePayload) SetUpdatedAt(v CreateVolumePayloadGetUpdatedAtRetType) {
+	setCreateVolumePayloadGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o CreateVolumePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["availabilityZone"] = o.AvailabilityZone
-	if !IsNil(o.Bootable) {
-		toSerialize["bootable"] = o.Bootable
+	if val, ok := getCreateVolumePayloadGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone); ok {
+		toSerialize["AvailabilityZone"] = val
+	}
+	if val, ok := getCreateVolumePayloadgetBootableAttributeTypeOk(o.Bootable); ok {
+		toSerialize["Bootable"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getCreateVolumePayloadGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getCreateVolumePayloadGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getCreateVolumePayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.ImageConfig) {
-		toSerialize["imageConfig"] = o.ImageConfig
+	if val, ok := getCreateVolumePayloadGetImageConfigAttributeTypeOk(o.ImageConfig); ok {
+		toSerialize["ImageConfig"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getCreateVolumePayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getCreateVolumePayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.PerformanceClass) {
-		toSerialize["performanceClass"] = o.PerformanceClass
+	if val, ok := getCreateVolumePayloadGetPerformanceClassAttributeTypeOk(o.PerformanceClass); ok {
+		toSerialize["PerformanceClass"] = val
 	}
-	if !IsNil(o.ServerId) {
-		toSerialize["serverId"] = o.ServerId
+	if val, ok := getCreateVolumePayloadGetServerIdAttributeTypeOk(o.ServerId); ok {
+		toSerialize["ServerId"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getCreateVolumePayloadGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Source) {
-		toSerialize["source"] = o.Source
+	if val, ok := getCreateVolumePayloadGetSourceAttributeTypeOk(o.Source); ok {
+		toSerialize["Source"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getCreateVolumePayloadGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getCreateVolumePayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_error.go b/services/iaas/model_error.go
index 61ea45dc0..6afb78dc2 100644
--- a/services/iaas/model_error.go
+++ b/services/iaas/model_error.go
@@ -17,13 +17,54 @@ import (
 // checks if the Error type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Error{}
 
+/*
+	types and functions for code
+*/
+
+// isLong
+type ErrorGetCodeAttributeType = *int64
+type ErrorGetCodeArgType = int64
+type ErrorGetCodeRetType = int64
+
+func getErrorGetCodeAttributeTypeOk(arg ErrorGetCodeAttributeType) (ret ErrorGetCodeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setErrorGetCodeAttributeType(arg *ErrorGetCodeAttributeType, val ErrorGetCodeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for msg
+*/
+
+// isNotNullableString
+type ErrorGetMsgAttributeType = *string
+
+func getErrorGetMsgAttributeTypeOk(arg ErrorGetMsgAttributeType) (ret ErrorGetMsgRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setErrorGetMsgAttributeType(arg *ErrorGetMsgAttributeType, val ErrorGetMsgRetType) {
+	*arg = &val
+}
+
+type ErrorGetMsgArgType = string
+type ErrorGetMsgRetType = string
+
 // Error Error with HTTP error code and an error message.
 type Error struct {
 	// REQUIRED
-	Code *int64 `json:"code"`
+	Code ErrorGetCodeAttributeType `json:"code"`
 	// An error message.
 	// REQUIRED
-	Msg *string `json:"msg"`
+	Msg ErrorGetMsgAttributeType `json:"msg"`
 }
 
 type _Error Error
@@ -32,10 +73,10 @@ type _Error Error
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewError(code *int64, msg *string) *Error {
+func NewError(code ErrorGetCodeArgType, msg ErrorGetMsgArgType) *Error {
 	this := Error{}
-	this.Code = code
-	this.Msg = msg
+	setErrorGetCodeAttributeType(&this.Code, code)
+	setErrorGetMsgAttributeType(&this.Msg, msg)
 	return &this
 }
 
@@ -48,57 +89,47 @@ func NewErrorWithDefaults() *Error {
 }
 
 // GetCode returns the Code field value
-func (o *Error) GetCode() *int64 {
-	if o == nil || IsNil(o.Code) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Code
+func (o *Error) GetCode() (ret ErrorGetCodeRetType) {
+	ret, _ = o.GetCodeOk()
+	return ret
 }
 
 // GetCodeOk returns a tuple with the Code field value
 // and a boolean to check if the value has been set.
-func (o *Error) GetCodeOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Code, true
+func (o *Error) GetCodeOk() (ret ErrorGetCodeRetType, ok bool) {
+	return getErrorGetCodeAttributeTypeOk(o.Code)
 }
 
 // SetCode sets field value
-func (o *Error) SetCode(v *int64) {
-	o.Code = v
+func (o *Error) SetCode(v ErrorGetCodeRetType) {
+	setErrorGetCodeAttributeType(&o.Code, v)
 }
 
 // GetMsg returns the Msg field value
-func (o *Error) GetMsg() *string {
-	if o == nil || IsNil(o.Msg) {
-		var ret *string
-		return ret
-	}
-
-	return o.Msg
+func (o *Error) GetMsg() (ret ErrorGetMsgRetType) {
+	ret, _ = o.GetMsgOk()
+	return ret
 }
 
 // GetMsgOk returns a tuple with the Msg field value
 // and a boolean to check if the value has been set.
-func (o *Error) GetMsgOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Msg, true
+func (o *Error) GetMsgOk() (ret ErrorGetMsgRetType, ok bool) {
+	return getErrorGetMsgAttributeTypeOk(o.Msg)
 }
 
 // SetMsg sets field value
-func (o *Error) SetMsg(v *string) {
-	o.Msg = v
+func (o *Error) SetMsg(v ErrorGetMsgRetType) {
+	setErrorGetMsgAttributeType(&o.Msg, v)
 }
 
 func (o Error) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["code"] = o.Code
-	toSerialize["msg"] = o.Msg
+	if val, ok := getErrorGetCodeAttributeTypeOk(o.Code); ok {
+		toSerialize["Code"] = val
+	}
+	if val, ok := getErrorGetMsgAttributeTypeOk(o.Msg); ok {
+		toSerialize["Msg"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_get_server_log_200_response.go b/services/iaas/model_get_server_log_200_response.go
index bbabc0b89..f64e60291 100644
--- a/services/iaas/model_get_server_log_200_response.go
+++ b/services/iaas/model_get_server_log_200_response.go
@@ -17,9 +17,30 @@ import (
 // checks if the GetServerLog200Response type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &GetServerLog200Response{}
 
+/*
+	types and functions for output
+*/
+
+// isNotNullableString
+type GetServerLog200ResponseGetOutputAttributeType = *string
+
+func getGetServerLog200ResponseGetOutputAttributeTypeOk(arg GetServerLog200ResponseGetOutputAttributeType) (ret GetServerLog200ResponseGetOutputRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setGetServerLog200ResponseGetOutputAttributeType(arg *GetServerLog200ResponseGetOutputAttributeType, val GetServerLog200ResponseGetOutputRetType) {
+	*arg = &val
+}
+
+type GetServerLog200ResponseGetOutputArgType = string
+type GetServerLog200ResponseGetOutputRetType = string
+
 // GetServerLog200Response struct for GetServerLog200Response
 type GetServerLog200Response struct {
-	Output *string `json:"output,omitempty"`
+	Output GetServerLog200ResponseGetOutputAttributeType `json:"output,omitempty"`
 }
 
 // NewGetServerLog200Response instantiates a new GetServerLog200Response object
@@ -40,41 +61,32 @@ func NewGetServerLog200ResponseWithDefaults() *GetServerLog200Response {
 }
 
 // GetOutput returns the Output field value if set, zero value otherwise.
-func (o *GetServerLog200Response) GetOutput() *string {
-	if o == nil || IsNil(o.Output) {
-		var ret *string
-		return ret
-	}
-	return o.Output
+func (o *GetServerLog200Response) GetOutput() (res GetServerLog200ResponseGetOutputRetType) {
+	res, _ = o.GetOutputOk()
+	return
 }
 
 // GetOutputOk returns a tuple with the Output field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *GetServerLog200Response) GetOutputOk() (*string, bool) {
-	if o == nil || IsNil(o.Output) {
-		return nil, false
-	}
-	return o.Output, true
+func (o *GetServerLog200Response) GetOutputOk() (ret GetServerLog200ResponseGetOutputRetType, ok bool) {
+	return getGetServerLog200ResponseGetOutputAttributeTypeOk(o.Output)
 }
 
 // HasOutput returns a boolean if a field has been set.
 func (o *GetServerLog200Response) HasOutput() bool {
-	if o != nil && !IsNil(o.Output) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetOutputOk()
+	return ok
 }
 
 // SetOutput gets a reference to the given string and assigns it to the Output field.
-func (o *GetServerLog200Response) SetOutput(v *string) {
-	o.Output = v
+func (o *GetServerLog200Response) SetOutput(v GetServerLog200ResponseGetOutputRetType) {
+	setGetServerLog200ResponseGetOutputAttributeType(&o.Output, v)
 }
 
 func (o GetServerLog200Response) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Output) {
-		toSerialize["output"] = o.Output
+	if val, ok := getGetServerLog200ResponseGetOutputAttributeTypeOk(o.Output); ok {
+		toSerialize["Output"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_icmp_parameters.go b/services/iaas/model_icmp_parameters.go
index 93ba53e9e..ed856ec0a 100644
--- a/services/iaas/model_icmp_parameters.go
+++ b/services/iaas/model_icmp_parameters.go
@@ -17,14 +17,54 @@ import (
 // checks if the ICMPParameters type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ICMPParameters{}
 
+/*
+	types and functions for code
+*/
+
+// isLong
+type ICMPParametersGetCodeAttributeType = *int64
+type ICMPParametersGetCodeArgType = int64
+type ICMPParametersGetCodeRetType = int64
+
+func getICMPParametersGetCodeAttributeTypeOk(arg ICMPParametersGetCodeAttributeType) (ret ICMPParametersGetCodeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setICMPParametersGetCodeAttributeType(arg *ICMPParametersGetCodeAttributeType, val ICMPParametersGetCodeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for type
+*/
+
+// isLong
+type ICMPParametersGetTypeAttributeType = *int64
+type ICMPParametersGetTypeArgType = int64
+type ICMPParametersGetTypeRetType = int64
+
+func getICMPParametersGetTypeAttributeTypeOk(arg ICMPParametersGetTypeAttributeType) (ret ICMPParametersGetTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setICMPParametersGetTypeAttributeType(arg *ICMPParametersGetTypeAttributeType, val ICMPParametersGetTypeRetType) {
+	*arg = &val
+}
+
 // ICMPParameters Object that represents ICMP parameters.
 type ICMPParameters struct {
 	// ICMP code. Can be set if the protocol is ICMP.
 	// REQUIRED
-	Code *int64 `json:"code"`
+	Code ICMPParametersGetCodeAttributeType `json:"code"`
 	// ICMP type. Can be set if the protocol is ICMP.
 	// REQUIRED
-	Type *int64 `json:"type"`
+	Type ICMPParametersGetTypeAttributeType `json:"type"`
 }
 
 type _ICMPParameters ICMPParameters
@@ -33,10 +73,10 @@ type _ICMPParameters ICMPParameters
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewICMPParameters(code *int64, type_ *int64) *ICMPParameters {
+func NewICMPParameters(code ICMPParametersGetCodeArgType, type_ ICMPParametersGetTypeArgType) *ICMPParameters {
 	this := ICMPParameters{}
-	this.Code = code
-	this.Type = type_
+	setICMPParametersGetCodeAttributeType(&this.Code, code)
+	setICMPParametersGetTypeAttributeType(&this.Type, type_)
 	return &this
 }
 
@@ -49,57 +89,47 @@ func NewICMPParametersWithDefaults() *ICMPParameters {
 }
 
 // GetCode returns the Code field value
-func (o *ICMPParameters) GetCode() *int64 {
-	if o == nil || IsNil(o.Code) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Code
+func (o *ICMPParameters) GetCode() (ret ICMPParametersGetCodeRetType) {
+	ret, _ = o.GetCodeOk()
+	return ret
 }
 
 // GetCodeOk returns a tuple with the Code field value
 // and a boolean to check if the value has been set.
-func (o *ICMPParameters) GetCodeOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Code, true
+func (o *ICMPParameters) GetCodeOk() (ret ICMPParametersGetCodeRetType, ok bool) {
+	return getICMPParametersGetCodeAttributeTypeOk(o.Code)
 }
 
 // SetCode sets field value
-func (o *ICMPParameters) SetCode(v *int64) {
-	o.Code = v
+func (o *ICMPParameters) SetCode(v ICMPParametersGetCodeRetType) {
+	setICMPParametersGetCodeAttributeType(&o.Code, v)
 }
 
 // GetType returns the Type field value
-func (o *ICMPParameters) GetType() *int64 {
-	if o == nil || IsNil(o.Type) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Type
+func (o *ICMPParameters) GetType() (ret ICMPParametersGetTypeRetType) {
+	ret, _ = o.GetTypeOk()
+	return ret
 }
 
 // GetTypeOk returns a tuple with the Type field value
 // and a boolean to check if the value has been set.
-func (o *ICMPParameters) GetTypeOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Type, true
+func (o *ICMPParameters) GetTypeOk() (ret ICMPParametersGetTypeRetType, ok bool) {
+	return getICMPParametersGetTypeAttributeTypeOk(o.Type)
 }
 
 // SetType sets field value
-func (o *ICMPParameters) SetType(v *int64) {
-	o.Type = v
+func (o *ICMPParameters) SetType(v ICMPParametersGetTypeRetType) {
+	setICMPParametersGetTypeAttributeType(&o.Type, v)
 }
 
 func (o ICMPParameters) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["code"] = o.Code
-	toSerialize["type"] = o.Type
+	if val, ok := getICMPParametersGetCodeAttributeTypeOk(o.Code); ok {
+		toSerialize["Code"] = val
+	}
+	if val, ok := getICMPParametersGetTypeAttributeTypeOk(o.Type); ok {
+		toSerialize["Type"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_image.go b/services/iaas/model_image.go
index 09a171728..063b730da 100644
--- a/services/iaas/model_image.go
+++ b/services/iaas/model_image.go
@@ -18,37 +18,343 @@ import (
 // checks if the Image type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Image{}
 
+/*
+	types and functions for checksum
+*/
+
+// isModel
+type ImageGetChecksumAttributeType = *ImageChecksum
+type ImageGetChecksumArgType = ImageChecksum
+type ImageGetChecksumRetType = ImageChecksum
+
+func getImageGetChecksumAttributeTypeOk(arg ImageGetChecksumAttributeType) (ret ImageGetChecksumRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetChecksumAttributeType(arg *ImageGetChecksumAttributeType, val ImageGetChecksumRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for config
+*/
+
+// isModel
+type ImageGetConfigAttributeType = *ImageConfig
+type ImageGetConfigArgType = ImageConfig
+type ImageGetConfigRetType = ImageConfig
+
+func getImageGetConfigAttributeTypeOk(arg ImageGetConfigAttributeType) (ret ImageGetConfigRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetConfigAttributeType(arg *ImageGetConfigAttributeType, val ImageGetConfigRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type ImageGetCreatedAtAttributeType = *time.Time
+type ImageGetCreatedAtArgType = time.Time
+type ImageGetCreatedAtRetType = time.Time
+
+func getImageGetCreatedAtAttributeTypeOk(arg ImageGetCreatedAtAttributeType) (ret ImageGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetCreatedAtAttributeType(arg *ImageGetCreatedAtAttributeType, val ImageGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for diskFormat
+*/
+
+// isNotNullableString
+type ImageGetDiskFormatAttributeType = *string
+
+func getImageGetDiskFormatAttributeTypeOk(arg ImageGetDiskFormatAttributeType) (ret ImageGetDiskFormatRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetDiskFormatAttributeType(arg *ImageGetDiskFormatAttributeType, val ImageGetDiskFormatRetType) {
+	*arg = &val
+}
+
+type ImageGetDiskFormatArgType = string
+type ImageGetDiskFormatRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type ImageGetIdAttributeType = *string
+
+func getImageGetIdAttributeTypeOk(arg ImageGetIdAttributeType) (ret ImageGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetIdAttributeType(arg *ImageGetIdAttributeType, val ImageGetIdRetType) {
+	*arg = &val
+}
+
+type ImageGetIdArgType = string
+type ImageGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type ImageGetLabelsAttributeType = *map[string]interface{}
+type ImageGetLabelsArgType = map[string]interface{}
+type ImageGetLabelsRetType = map[string]interface{}
+
+func getImageGetLabelsAttributeTypeOk(arg ImageGetLabelsAttributeType) (ret ImageGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetLabelsAttributeType(arg *ImageGetLabelsAttributeType, val ImageGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minDiskSize
+*/
+
+// isLong
+type ImageGetMinDiskSizeAttributeType = *int64
+type ImageGetMinDiskSizeArgType = int64
+type ImageGetMinDiskSizeRetType = int64
+
+func getImageGetMinDiskSizeAttributeTypeOk(arg ImageGetMinDiskSizeAttributeType) (ret ImageGetMinDiskSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetMinDiskSizeAttributeType(arg *ImageGetMinDiskSizeAttributeType, val ImageGetMinDiskSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minRam
+*/
+
+// isLong
+type ImageGetMinRamAttributeType = *int64
+type ImageGetMinRamArgType = int64
+type ImageGetMinRamRetType = int64
+
+func getImageGetMinRamAttributeTypeOk(arg ImageGetMinRamAttributeType) (ret ImageGetMinRamRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetMinRamAttributeType(arg *ImageGetMinRamAttributeType, val ImageGetMinRamRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type ImageGetNameAttributeType = *string
+
+func getImageGetNameAttributeTypeOk(arg ImageGetNameAttributeType) (ret ImageGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetNameAttributeType(arg *ImageGetNameAttributeType, val ImageGetNameRetType) {
+	*arg = &val
+}
+
+type ImageGetNameArgType = string
+type ImageGetNameRetType = string
+
+/*
+	types and functions for owner
+*/
+
+// isNotNullableString
+type ImageGetOwnerAttributeType = *string
+
+func getImageGetOwnerAttributeTypeOk(arg ImageGetOwnerAttributeType) (ret ImageGetOwnerRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetOwnerAttributeType(arg *ImageGetOwnerAttributeType, val ImageGetOwnerRetType) {
+	*arg = &val
+}
+
+type ImageGetOwnerArgType = string
+type ImageGetOwnerRetType = string
+
+/*
+	types and functions for protected
+*/
+
+// isBoolean
+type ImagegetProtectedAttributeType = *bool
+type ImagegetProtectedArgType = bool
+type ImagegetProtectedRetType = bool
+
+func getImagegetProtectedAttributeTypeOk(arg ImagegetProtectedAttributeType) (ret ImagegetProtectedRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImagegetProtectedAttributeType(arg *ImagegetProtectedAttributeType, val ImagegetProtectedRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for scope
+*/
+
+// isNotNullableString
+type ImageGetScopeAttributeType = *string
+
+func getImageGetScopeAttributeTypeOk(arg ImageGetScopeAttributeType) (ret ImageGetScopeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetScopeAttributeType(arg *ImageGetScopeAttributeType, val ImageGetScopeRetType) {
+	*arg = &val
+}
+
+type ImageGetScopeArgType = string
+type ImageGetScopeRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type ImageGetSizeAttributeType = *int64
+type ImageGetSizeArgType = int64
+type ImageGetSizeRetType = int64
+
+func getImageGetSizeAttributeTypeOk(arg ImageGetSizeAttributeType) (ret ImageGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetSizeAttributeType(arg *ImageGetSizeAttributeType, val ImageGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type ImageGetStatusAttributeType = *string
+
+func getImageGetStatusAttributeTypeOk(arg ImageGetStatusAttributeType) (ret ImageGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetStatusAttributeType(arg *ImageGetStatusAttributeType, val ImageGetStatusRetType) {
+	*arg = &val
+}
+
+type ImageGetStatusArgType = string
+type ImageGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type ImageGetUpdatedAtAttributeType = *time.Time
+type ImageGetUpdatedAtArgType = time.Time
+type ImageGetUpdatedAtRetType = time.Time
+
+func getImageGetUpdatedAtAttributeTypeOk(arg ImageGetUpdatedAtAttributeType) (ret ImageGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageGetUpdatedAtAttributeType(arg *ImageGetUpdatedAtAttributeType, val ImageGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // Image Object that represents an Image and its parameters. Used for Creating and returning (get/list).
 type Image struct {
-	Checksum *ImageChecksum `json:"checksum,omitempty"`
-	Config   *ImageConfig   `json:"config,omitempty"`
+	Checksum ImageGetChecksumAttributeType `json:"checksum,omitempty"`
+	Config   ImageGetConfigAttributeType   `json:"config,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt ImageGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Object that represents a disk format. Possible values: `raw`, `qcow2`, `iso`.
 	// REQUIRED
-	DiskFormat *string `json:"diskFormat"`
+	DiskFormat ImageGetDiskFormatAttributeType `json:"diskFormat"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id ImageGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels ImageGetLabelsAttributeType `json:"labels,omitempty"`
 	// Size in Gigabyte.
-	MinDiskSize *int64 `json:"minDiskSize,omitempty"`
+	MinDiskSize ImageGetMinDiskSizeAttributeType `json:"minDiskSize,omitempty"`
 	// Size in Megabyte.
-	MinRam *int64 `json:"minRam,omitempty"`
+	MinRam ImageGetMinRamAttributeType `json:"minRam,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name ImageGetNameAttributeType `json:"name"`
 	// Universally Unique Identifier (UUID).
-	Owner     *string `json:"owner,omitempty"`
-	Protected *bool   `json:"protected,omitempty"`
+	Owner     ImageGetOwnerAttributeType     `json:"owner,omitempty"`
+	Protected ImagegetProtectedAttributeType `json:"protected,omitempty"`
 	// Scope of an Image. Possible values: `public`, `local`, `projects`, `organization`.
-	Scope *string `json:"scope,omitempty"`
+	Scope ImageGetScopeAttributeType `json:"scope,omitempty"`
 	// Size in bytes.
-	Size *int64 `json:"size,omitempty"`
+	Size ImageGetSizeAttributeType `json:"size,omitempty"`
 	// The status of an image object. Possible values: `AVAILABLE`, `CREATING`, `DEACTIVATED`, `DELETED`, `DELETING`, `ERROR`.
-	Status *string `json:"status,omitempty"`
+	Status ImageGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt ImageGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _Image Image
@@ -57,10 +363,10 @@ type _Image Image
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewImage(diskFormat *string, name *string) *Image {
+func NewImage(diskFormat ImageGetDiskFormatArgType, name ImageGetNameArgType) *Image {
 	this := Image{}
-	this.DiskFormat = diskFormat
-	this.Name = name
+	setImageGetDiskFormatAttributeType(&this.DiskFormat, diskFormat)
+	setImageGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -73,511 +379,384 @@ func NewImageWithDefaults() *Image {
 }
 
 // GetChecksum returns the Checksum field value if set, zero value otherwise.
-func (o *Image) GetChecksum() *ImageChecksum {
-	if o == nil || IsNil(o.Checksum) {
-		var ret *ImageChecksum
-		return ret
-	}
-	return o.Checksum
+func (o *Image) GetChecksum() (res ImageGetChecksumRetType) {
+	res, _ = o.GetChecksumOk()
+	return
 }
 
 // GetChecksumOk returns a tuple with the Checksum field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetChecksumOk() (*ImageChecksum, bool) {
-	if o == nil || IsNil(o.Checksum) {
-		return nil, false
-	}
-	return o.Checksum, true
+func (o *Image) GetChecksumOk() (ret ImageGetChecksumRetType, ok bool) {
+	return getImageGetChecksumAttributeTypeOk(o.Checksum)
 }
 
 // HasChecksum returns a boolean if a field has been set.
 func (o *Image) HasChecksum() bool {
-	if o != nil && !IsNil(o.Checksum) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetChecksumOk()
+	return ok
 }
 
 // SetChecksum gets a reference to the given ImageChecksum and assigns it to the Checksum field.
-func (o *Image) SetChecksum(v *ImageChecksum) {
-	o.Checksum = v
+func (o *Image) SetChecksum(v ImageGetChecksumRetType) {
+	setImageGetChecksumAttributeType(&o.Checksum, v)
 }
 
 // GetConfig returns the Config field value if set, zero value otherwise.
-func (o *Image) GetConfig() *ImageConfig {
-	if o == nil || IsNil(o.Config) {
-		var ret *ImageConfig
-		return ret
-	}
-	return o.Config
+func (o *Image) GetConfig() (res ImageGetConfigRetType) {
+	res, _ = o.GetConfigOk()
+	return
 }
 
 // GetConfigOk returns a tuple with the Config field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetConfigOk() (*ImageConfig, bool) {
-	if o == nil || IsNil(o.Config) {
-		return nil, false
-	}
-	return o.Config, true
+func (o *Image) GetConfigOk() (ret ImageGetConfigRetType, ok bool) {
+	return getImageGetConfigAttributeTypeOk(o.Config)
 }
 
 // HasConfig returns a boolean if a field has been set.
 func (o *Image) HasConfig() bool {
-	if o != nil && !IsNil(o.Config) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetConfigOk()
+	return ok
 }
 
 // SetConfig gets a reference to the given ImageConfig and assigns it to the Config field.
-func (o *Image) SetConfig(v *ImageConfig) {
-	o.Config = v
+func (o *Image) SetConfig(v ImageGetConfigRetType) {
+	setImageGetConfigAttributeType(&o.Config, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Image) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Image) GetCreatedAt() (res ImageGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Image) GetCreatedAtOk() (ret ImageGetCreatedAtRetType, ok bool) {
+	return getImageGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Image) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Image) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Image) SetCreatedAt(v ImageGetCreatedAtRetType) {
+	setImageGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetDiskFormat returns the DiskFormat field value
-func (o *Image) GetDiskFormat() *string {
-	if o == nil || IsNil(o.DiskFormat) {
-		var ret *string
-		return ret
-	}
-
-	return o.DiskFormat
+func (o *Image) GetDiskFormat() (ret ImageGetDiskFormatRetType) {
+	ret, _ = o.GetDiskFormatOk()
+	return ret
 }
 
 // GetDiskFormatOk returns a tuple with the DiskFormat field value
 // and a boolean to check if the value has been set.
-func (o *Image) GetDiskFormatOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.DiskFormat, true
+func (o *Image) GetDiskFormatOk() (ret ImageGetDiskFormatRetType, ok bool) {
+	return getImageGetDiskFormatAttributeTypeOk(o.DiskFormat)
 }
 
 // SetDiskFormat sets field value
-func (o *Image) SetDiskFormat(v *string) {
-	o.DiskFormat = v
+func (o *Image) SetDiskFormat(v ImageGetDiskFormatRetType) {
+	setImageGetDiskFormatAttributeType(&o.DiskFormat, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *Image) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *Image) GetId() (res ImageGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *Image) GetIdOk() (ret ImageGetIdRetType, ok bool) {
+	return getImageGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *Image) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *Image) SetId(v *string) {
-	o.Id = v
+func (o *Image) SetId(v ImageGetIdRetType) {
+	setImageGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Image) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Image) GetLabels() (res ImageGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Image) GetLabelsOk() (ret ImageGetLabelsRetType, ok bool) {
+	return getImageGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Image) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Image) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Image) SetLabels(v ImageGetLabelsRetType) {
+	setImageGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetMinDiskSize returns the MinDiskSize field value if set, zero value otherwise.
-func (o *Image) GetMinDiskSize() *int64 {
-	if o == nil || IsNil(o.MinDiskSize) {
-		var ret *int64
-		return ret
-	}
-	return o.MinDiskSize
+func (o *Image) GetMinDiskSize() (res ImageGetMinDiskSizeRetType) {
+	res, _ = o.GetMinDiskSizeOk()
+	return
 }
 
 // GetMinDiskSizeOk returns a tuple with the MinDiskSize field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetMinDiskSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinDiskSize) {
-		return nil, false
-	}
-	return o.MinDiskSize, true
+func (o *Image) GetMinDiskSizeOk() (ret ImageGetMinDiskSizeRetType, ok bool) {
+	return getImageGetMinDiskSizeAttributeTypeOk(o.MinDiskSize)
 }
 
 // HasMinDiskSize returns a boolean if a field has been set.
 func (o *Image) HasMinDiskSize() bool {
-	if o != nil && !IsNil(o.MinDiskSize) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinDiskSizeOk()
+	return ok
 }
 
 // SetMinDiskSize gets a reference to the given int64 and assigns it to the MinDiskSize field.
-func (o *Image) SetMinDiskSize(v *int64) {
-	o.MinDiskSize = v
+func (o *Image) SetMinDiskSize(v ImageGetMinDiskSizeRetType) {
+	setImageGetMinDiskSizeAttributeType(&o.MinDiskSize, v)
 }
 
 // GetMinRam returns the MinRam field value if set, zero value otherwise.
-func (o *Image) GetMinRam() *int64 {
-	if o == nil || IsNil(o.MinRam) {
-		var ret *int64
-		return ret
-	}
-	return o.MinRam
+func (o *Image) GetMinRam() (res ImageGetMinRamRetType) {
+	res, _ = o.GetMinRamOk()
+	return
 }
 
 // GetMinRamOk returns a tuple with the MinRam field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetMinRamOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinRam) {
-		return nil, false
-	}
-	return o.MinRam, true
+func (o *Image) GetMinRamOk() (ret ImageGetMinRamRetType, ok bool) {
+	return getImageGetMinRamAttributeTypeOk(o.MinRam)
 }
 
 // HasMinRam returns a boolean if a field has been set.
 func (o *Image) HasMinRam() bool {
-	if o != nil && !IsNil(o.MinRam) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinRamOk()
+	return ok
 }
 
 // SetMinRam gets a reference to the given int64 and assigns it to the MinRam field.
-func (o *Image) SetMinRam(v *int64) {
-	o.MinRam = v
+func (o *Image) SetMinRam(v ImageGetMinRamRetType) {
+	setImageGetMinRamAttributeType(&o.MinRam, v)
 }
 
 // GetName returns the Name field value
-func (o *Image) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *Image) GetName() (ret ImageGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *Image) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Image) GetNameOk() (ret ImageGetNameRetType, ok bool) {
+	return getImageGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *Image) SetName(v *string) {
-	o.Name = v
+func (o *Image) SetName(v ImageGetNameRetType) {
+	setImageGetNameAttributeType(&o.Name, v)
 }
 
 // GetOwner returns the Owner field value if set, zero value otherwise.
-func (o *Image) GetOwner() *string {
-	if o == nil || IsNil(o.Owner) {
-		var ret *string
-		return ret
-	}
-	return o.Owner
+func (o *Image) GetOwner() (res ImageGetOwnerRetType) {
+	res, _ = o.GetOwnerOk()
+	return
 }
 
 // GetOwnerOk returns a tuple with the Owner field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetOwnerOk() (*string, bool) {
-	if o == nil || IsNil(o.Owner) {
-		return nil, false
-	}
-	return o.Owner, true
+func (o *Image) GetOwnerOk() (ret ImageGetOwnerRetType, ok bool) {
+	return getImageGetOwnerAttributeTypeOk(o.Owner)
 }
 
 // HasOwner returns a boolean if a field has been set.
 func (o *Image) HasOwner() bool {
-	if o != nil && !IsNil(o.Owner) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetOwnerOk()
+	return ok
 }
 
 // SetOwner gets a reference to the given string and assigns it to the Owner field.
-func (o *Image) SetOwner(v *string) {
-	o.Owner = v
+func (o *Image) SetOwner(v ImageGetOwnerRetType) {
+	setImageGetOwnerAttributeType(&o.Owner, v)
 }
 
 // GetProtected returns the Protected field value if set, zero value otherwise.
-func (o *Image) GetProtected() *bool {
-	if o == nil || IsNil(o.Protected) {
-		var ret *bool
-		return ret
-	}
-	return o.Protected
+func (o *Image) GetProtected() (res ImagegetProtectedRetType) {
+	res, _ = o.GetProtectedOk()
+	return
 }
 
 // GetProtectedOk returns a tuple with the Protected field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetProtectedOk() (*bool, bool) {
-	if o == nil || IsNil(o.Protected) {
-		return nil, false
-	}
-	return o.Protected, true
+func (o *Image) GetProtectedOk() (ret ImagegetProtectedRetType, ok bool) {
+	return getImagegetProtectedAttributeTypeOk(o.Protected)
 }
 
 // HasProtected returns a boolean if a field has been set.
 func (o *Image) HasProtected() bool {
-	if o != nil && !IsNil(o.Protected) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProtectedOk()
+	return ok
 }
 
 // SetProtected gets a reference to the given bool and assigns it to the Protected field.
-func (o *Image) SetProtected(v *bool) {
-	o.Protected = v
+func (o *Image) SetProtected(v ImagegetProtectedRetType) {
+	setImagegetProtectedAttributeType(&o.Protected, v)
 }
 
 // GetScope returns the Scope field value if set, zero value otherwise.
-func (o *Image) GetScope() *string {
-	if o == nil || IsNil(o.Scope) {
-		var ret *string
-		return ret
-	}
-	return o.Scope
+func (o *Image) GetScope() (res ImageGetScopeRetType) {
+	res, _ = o.GetScopeOk()
+	return
 }
 
 // GetScopeOk returns a tuple with the Scope field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetScopeOk() (*string, bool) {
-	if o == nil || IsNil(o.Scope) {
-		return nil, false
-	}
-	return o.Scope, true
+func (o *Image) GetScopeOk() (ret ImageGetScopeRetType, ok bool) {
+	return getImageGetScopeAttributeTypeOk(o.Scope)
 }
 
 // HasScope returns a boolean if a field has been set.
 func (o *Image) HasScope() bool {
-	if o != nil && !IsNil(o.Scope) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetScopeOk()
+	return ok
 }
 
 // SetScope gets a reference to the given string and assigns it to the Scope field.
-func (o *Image) SetScope(v *string) {
-	o.Scope = v
+func (o *Image) SetScope(v ImageGetScopeRetType) {
+	setImageGetScopeAttributeType(&o.Scope, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *Image) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *Image) GetSize() (res ImageGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *Image) GetSizeOk() (ret ImageGetSizeRetType, ok bool) {
+	return getImageGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *Image) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *Image) SetSize(v *int64) {
-	o.Size = v
+func (o *Image) SetSize(v ImageGetSizeRetType) {
+	setImageGetSizeAttributeType(&o.Size, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *Image) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *Image) GetStatus() (res ImageGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *Image) GetStatusOk() (ret ImageGetStatusRetType, ok bool) {
+	return getImageGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *Image) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *Image) SetStatus(v *string) {
-	o.Status = v
+func (o *Image) SetStatus(v ImageGetStatusRetType) {
+	setImageGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Image) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Image) GetUpdatedAt() (res ImageGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Image) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Image) GetUpdatedAtOk() (ret ImageGetUpdatedAtRetType, ok bool) {
+	return getImageGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Image) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Image) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Image) SetUpdatedAt(v ImageGetUpdatedAtRetType) {
+	setImageGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o Image) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Checksum) {
-		toSerialize["checksum"] = o.Checksum
+	if val, ok := getImageGetChecksumAttributeTypeOk(o.Checksum); ok {
+		toSerialize["Checksum"] = val
+	}
+	if val, ok := getImageGetConfigAttributeTypeOk(o.Config); ok {
+		toSerialize["Config"] = val
+	}
+	if val, ok := getImageGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.Config) {
-		toSerialize["config"] = o.Config
+	if val, ok := getImageGetDiskFormatAttributeTypeOk(o.DiskFormat); ok {
+		toSerialize["DiskFormat"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getImageGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	toSerialize["diskFormat"] = o.DiskFormat
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getImageGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getImageGetMinDiskSizeAttributeTypeOk(o.MinDiskSize); ok {
+		toSerialize["MinDiskSize"] = val
 	}
-	if !IsNil(o.MinDiskSize) {
-		toSerialize["minDiskSize"] = o.MinDiskSize
+	if val, ok := getImageGetMinRamAttributeTypeOk(o.MinRam); ok {
+		toSerialize["MinRam"] = val
 	}
-	if !IsNil(o.MinRam) {
-		toSerialize["minRam"] = o.MinRam
+	if val, ok := getImageGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Owner) {
-		toSerialize["owner"] = o.Owner
+	if val, ok := getImageGetOwnerAttributeTypeOk(o.Owner); ok {
+		toSerialize["Owner"] = val
 	}
-	if !IsNil(o.Protected) {
-		toSerialize["protected"] = o.Protected
+	if val, ok := getImagegetProtectedAttributeTypeOk(o.Protected); ok {
+		toSerialize["Protected"] = val
 	}
-	if !IsNil(o.Scope) {
-		toSerialize["scope"] = o.Scope
+	if val, ok := getImageGetScopeAttributeTypeOk(o.Scope); ok {
+		toSerialize["Scope"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getImageGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getImageGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getImageGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_image_checksum.go b/services/iaas/model_image_checksum.go
index bfbe73ebf..ed8156792 100644
--- a/services/iaas/model_image_checksum.go
+++ b/services/iaas/model_image_checksum.go
@@ -17,14 +17,56 @@ import (
 // checks if the ImageChecksum type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ImageChecksum{}
 
+/*
+	types and functions for algorithm
+*/
+
+// isNotNullableString
+type ImageChecksumGetAlgorithmAttributeType = *string
+
+func getImageChecksumGetAlgorithmAttributeTypeOk(arg ImageChecksumGetAlgorithmAttributeType) (ret ImageChecksumGetAlgorithmRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageChecksumGetAlgorithmAttributeType(arg *ImageChecksumGetAlgorithmAttributeType, val ImageChecksumGetAlgorithmRetType) {
+	*arg = &val
+}
+
+type ImageChecksumGetAlgorithmArgType = string
+type ImageChecksumGetAlgorithmRetType = string
+
+/*
+	types and functions for digest
+*/
+
+// isNotNullableString
+type ImageChecksumGetDigestAttributeType = *string
+
+func getImageChecksumGetDigestAttributeTypeOk(arg ImageChecksumGetDigestAttributeType) (ret ImageChecksumGetDigestRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageChecksumGetDigestAttributeType(arg *ImageChecksumGetDigestAttributeType, val ImageChecksumGetDigestRetType) {
+	*arg = &val
+}
+
+type ImageChecksumGetDigestArgType = string
+type ImageChecksumGetDigestRetType = string
+
 // ImageChecksum Representation of an image checksum.
 type ImageChecksum struct {
 	// Algorithm for the checksum of the image data.
 	// REQUIRED
-	Algorithm *string `json:"algorithm"`
+	Algorithm ImageChecksumGetAlgorithmAttributeType `json:"algorithm"`
 	// Hexdigest of the checksum of the image data.
 	// REQUIRED
-	Digest *string `json:"digest"`
+	Digest ImageChecksumGetDigestAttributeType `json:"digest"`
 }
 
 type _ImageChecksum ImageChecksum
@@ -33,10 +75,10 @@ type _ImageChecksum ImageChecksum
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewImageChecksum(algorithm *string, digest *string) *ImageChecksum {
+func NewImageChecksum(algorithm ImageChecksumGetAlgorithmArgType, digest ImageChecksumGetDigestArgType) *ImageChecksum {
 	this := ImageChecksum{}
-	this.Algorithm = algorithm
-	this.Digest = digest
+	setImageChecksumGetAlgorithmAttributeType(&this.Algorithm, algorithm)
+	setImageChecksumGetDigestAttributeType(&this.Digest, digest)
 	return &this
 }
 
@@ -49,57 +91,47 @@ func NewImageChecksumWithDefaults() *ImageChecksum {
 }
 
 // GetAlgorithm returns the Algorithm field value
-func (o *ImageChecksum) GetAlgorithm() *string {
-	if o == nil || IsNil(o.Algorithm) {
-		var ret *string
-		return ret
-	}
-
-	return o.Algorithm
+func (o *ImageChecksum) GetAlgorithm() (ret ImageChecksumGetAlgorithmRetType) {
+	ret, _ = o.GetAlgorithmOk()
+	return ret
 }
 
 // GetAlgorithmOk returns a tuple with the Algorithm field value
 // and a boolean to check if the value has been set.
-func (o *ImageChecksum) GetAlgorithmOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Algorithm, true
+func (o *ImageChecksum) GetAlgorithmOk() (ret ImageChecksumGetAlgorithmRetType, ok bool) {
+	return getImageChecksumGetAlgorithmAttributeTypeOk(o.Algorithm)
 }
 
 // SetAlgorithm sets field value
-func (o *ImageChecksum) SetAlgorithm(v *string) {
-	o.Algorithm = v
+func (o *ImageChecksum) SetAlgorithm(v ImageChecksumGetAlgorithmRetType) {
+	setImageChecksumGetAlgorithmAttributeType(&o.Algorithm, v)
 }
 
 // GetDigest returns the Digest field value
-func (o *ImageChecksum) GetDigest() *string {
-	if o == nil || IsNil(o.Digest) {
-		var ret *string
-		return ret
-	}
-
-	return o.Digest
+func (o *ImageChecksum) GetDigest() (ret ImageChecksumGetDigestRetType) {
+	ret, _ = o.GetDigestOk()
+	return ret
 }
 
 // GetDigestOk returns a tuple with the Digest field value
 // and a boolean to check if the value has been set.
-func (o *ImageChecksum) GetDigestOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Digest, true
+func (o *ImageChecksum) GetDigestOk() (ret ImageChecksumGetDigestRetType, ok bool) {
+	return getImageChecksumGetDigestAttributeTypeOk(o.Digest)
 }
 
 // SetDigest sets field value
-func (o *ImageChecksum) SetDigest(v *string) {
-	o.Digest = v
+func (o *ImageChecksum) SetDigest(v ImageChecksumGetDigestRetType) {
+	setImageChecksumGetDigestAttributeType(&o.Digest, v)
 }
 
 func (o ImageChecksum) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["algorithm"] = o.Algorithm
-	toSerialize["digest"] = o.Digest
+	if val, ok := getImageChecksumGetAlgorithmAttributeTypeOk(o.Algorithm); ok {
+		toSerialize["Algorithm"] = val
+	}
+	if val, ok := getImageChecksumGetDigestAttributeTypeOk(o.Digest); ok {
+		toSerialize["Digest"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_image_config.go b/services/iaas/model_image_config.go
index 78a974393..110635597 100644
--- a/services/iaas/model_image_config.go
+++ b/services/iaas/model_image_config.go
@@ -17,36 +17,358 @@ import (
 // checks if the ImageConfig type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ImageConfig{}
 
+/*
+	types and functions for architecture
+*/
+
+// isNotNullableString
+type ImageConfigGetArchitectureAttributeType = *string
+
+func getImageConfigGetArchitectureAttributeTypeOk(arg ImageConfigGetArchitectureAttributeType) (ret ImageConfigGetArchitectureRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageConfigGetArchitectureAttributeType(arg *ImageConfigGetArchitectureAttributeType, val ImageConfigGetArchitectureRetType) {
+	*arg = &val
+}
+
+type ImageConfigGetArchitectureArgType = string
+type ImageConfigGetArchitectureRetType = string
+
+/*
+	types and functions for bootMenu
+*/
+
+// isBoolean
+type ImageConfiggetBootMenuAttributeType = *bool
+type ImageConfiggetBootMenuArgType = bool
+type ImageConfiggetBootMenuRetType = bool
+
+func getImageConfiggetBootMenuAttributeTypeOk(arg ImageConfiggetBootMenuAttributeType) (ret ImageConfiggetBootMenuRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageConfiggetBootMenuAttributeType(arg *ImageConfiggetBootMenuAttributeType, val ImageConfiggetBootMenuRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for cdromBus
+*/
+
+// isNullableString
+type ImageConfigGetCdromBusAttributeType = *NullableString
+
+func getImageConfigGetCdromBusAttributeTypeOk(arg ImageConfigGetCdromBusAttributeType) (ret ImageConfigGetCdromBusRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetCdromBusAttributeType(arg *ImageConfigGetCdromBusAttributeType, val ImageConfigGetCdromBusRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetCdromBusArgType = *string
+type ImageConfigGetCdromBusRetType = *string
+
+/*
+	types and functions for diskBus
+*/
+
+// isNullableString
+type ImageConfigGetDiskBusAttributeType = *NullableString
+
+func getImageConfigGetDiskBusAttributeTypeOk(arg ImageConfigGetDiskBusAttributeType) (ret ImageConfigGetDiskBusRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetDiskBusAttributeType(arg *ImageConfigGetDiskBusAttributeType, val ImageConfigGetDiskBusRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetDiskBusArgType = *string
+type ImageConfigGetDiskBusRetType = *string
+
+/*
+	types and functions for nicModel
+*/
+
+// isNullableString
+type ImageConfigGetNicModelAttributeType = *NullableString
+
+func getImageConfigGetNicModelAttributeTypeOk(arg ImageConfigGetNicModelAttributeType) (ret ImageConfigGetNicModelRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetNicModelAttributeType(arg *ImageConfigGetNicModelAttributeType, val ImageConfigGetNicModelRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetNicModelArgType = *string
+type ImageConfigGetNicModelRetType = *string
+
+/*
+	types and functions for operatingSystem
+*/
+
+// isNotNullableString
+type ImageConfigGetOperatingSystemAttributeType = *string
+
+func getImageConfigGetOperatingSystemAttributeTypeOk(arg ImageConfigGetOperatingSystemAttributeType) (ret ImageConfigGetOperatingSystemRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageConfigGetOperatingSystemAttributeType(arg *ImageConfigGetOperatingSystemAttributeType, val ImageConfigGetOperatingSystemRetType) {
+	*arg = &val
+}
+
+type ImageConfigGetOperatingSystemArgType = string
+type ImageConfigGetOperatingSystemRetType = string
+
+/*
+	types and functions for operatingSystemDistro
+*/
+
+// isNullableString
+type ImageConfigGetOperatingSystemDistroAttributeType = *NullableString
+
+func getImageConfigGetOperatingSystemDistroAttributeTypeOk(arg ImageConfigGetOperatingSystemDistroAttributeType) (ret ImageConfigGetOperatingSystemDistroRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetOperatingSystemDistroAttributeType(arg *ImageConfigGetOperatingSystemDistroAttributeType, val ImageConfigGetOperatingSystemDistroRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetOperatingSystemDistroArgType = *string
+type ImageConfigGetOperatingSystemDistroRetType = *string
+
+/*
+	types and functions for operatingSystemVersion
+*/
+
+// isNullableString
+type ImageConfigGetOperatingSystemVersionAttributeType = *NullableString
+
+func getImageConfigGetOperatingSystemVersionAttributeTypeOk(arg ImageConfigGetOperatingSystemVersionAttributeType) (ret ImageConfigGetOperatingSystemVersionRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetOperatingSystemVersionAttributeType(arg *ImageConfigGetOperatingSystemVersionAttributeType, val ImageConfigGetOperatingSystemVersionRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetOperatingSystemVersionArgType = *string
+type ImageConfigGetOperatingSystemVersionRetType = *string
+
+/*
+	types and functions for rescueBus
+*/
+
+// isNullableString
+type ImageConfigGetRescueBusAttributeType = *NullableString
+
+func getImageConfigGetRescueBusAttributeTypeOk(arg ImageConfigGetRescueBusAttributeType) (ret ImageConfigGetRescueBusRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetRescueBusAttributeType(arg *ImageConfigGetRescueBusAttributeType, val ImageConfigGetRescueBusRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetRescueBusArgType = *string
+type ImageConfigGetRescueBusRetType = *string
+
+/*
+	types and functions for rescueDevice
+*/
+
+// isNullableString
+type ImageConfigGetRescueDeviceAttributeType = *NullableString
+
+func getImageConfigGetRescueDeviceAttributeTypeOk(arg ImageConfigGetRescueDeviceAttributeType) (ret ImageConfigGetRescueDeviceRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetRescueDeviceAttributeType(arg *ImageConfigGetRescueDeviceAttributeType, val ImageConfigGetRescueDeviceRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetRescueDeviceArgType = *string
+type ImageConfigGetRescueDeviceRetType = *string
+
+/*
+	types and functions for secureBoot
+*/
+
+// isBoolean
+type ImageConfiggetSecureBootAttributeType = *bool
+type ImageConfiggetSecureBootArgType = bool
+type ImageConfiggetSecureBootRetType = bool
+
+func getImageConfiggetSecureBootAttributeTypeOk(arg ImageConfiggetSecureBootAttributeType) (ret ImageConfiggetSecureBootRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageConfiggetSecureBootAttributeType(arg *ImageConfiggetSecureBootAttributeType, val ImageConfiggetSecureBootRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for uefi
+*/
+
+// isBoolean
+type ImageConfiggetUefiAttributeType = *bool
+type ImageConfiggetUefiArgType = bool
+type ImageConfiggetUefiRetType = bool
+
+func getImageConfiggetUefiAttributeTypeOk(arg ImageConfiggetUefiAttributeType) (ret ImageConfiggetUefiRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageConfiggetUefiAttributeType(arg *ImageConfiggetUefiAttributeType, val ImageConfiggetUefiRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for videoModel
+*/
+
+// isNullableString
+type ImageConfigGetVideoModelAttributeType = *NullableString
+
+func getImageConfigGetVideoModelAttributeTypeOk(arg ImageConfigGetVideoModelAttributeType) (ret ImageConfigGetVideoModelRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setImageConfigGetVideoModelAttributeType(arg *ImageConfigGetVideoModelAttributeType, val ImageConfigGetVideoModelRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type ImageConfigGetVideoModelArgType = *string
+type ImageConfigGetVideoModelRetType = *string
+
+/*
+	types and functions for virtioScsi
+*/
+
+// isBoolean
+type ImageConfiggetVirtioScsiAttributeType = *bool
+type ImageConfiggetVirtioScsiArgType = bool
+type ImageConfiggetVirtioScsiRetType = bool
+
+func getImageConfiggetVirtioScsiAttributeTypeOk(arg ImageConfiggetVirtioScsiAttributeType) (ret ImageConfiggetVirtioScsiRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageConfiggetVirtioScsiAttributeType(arg *ImageConfiggetVirtioScsiAttributeType, val ImageConfiggetVirtioScsiRetType) {
+	*arg = &val
+}
+
 // ImageConfig Properties to set hardware and scheduling settings for an Image.
 type ImageConfig struct {
 	// Represents CPU architecture. The default for new images is x86.
-	Architecture *string `json:"architecture,omitempty"`
+	Architecture ImageConfigGetArchitectureAttributeType `json:"architecture,omitempty"`
 	// Enables the BIOS bootmenu. The default for new images is disabled.
-	BootMenu *bool `json:"bootMenu,omitempty"`
+	BootMenu ImageConfiggetBootMenuAttributeType `json:"bootMenu,omitempty"`
 	// Sets CDROM bus controller type.
-	CdromBus *NullableString `json:"cdromBus,omitempty"`
+	CdromBus ImageConfigGetCdromBusAttributeType `json:"cdromBus,omitempty"`
 	// Sets Disk bus controller type.
-	DiskBus *NullableString `json:"diskBus,omitempty"`
+	DiskBus ImageConfigGetDiskBusAttributeType `json:"diskBus,omitempty"`
 	// Sets virtual nic model.
-	NicModel *NullableString `json:"nicModel,omitempty"`
+	NicModel ImageConfigGetNicModelAttributeType `json:"nicModel,omitempty"`
 	// Enables OS specific optimizations.
-	OperatingSystem *string `json:"operatingSystem,omitempty"`
+	OperatingSystem ImageConfigGetOperatingSystemAttributeType `json:"operatingSystem,omitempty"`
 	// Operating System Distribution.
-	OperatingSystemDistro *NullableString `json:"operatingSystemDistro,omitempty"`
+	OperatingSystemDistro ImageConfigGetOperatingSystemDistroAttributeType `json:"operatingSystemDistro,omitempty"`
 	// Version of the OS.
-	OperatingSystemVersion *NullableString `json:"operatingSystemVersion,omitempty"`
+	OperatingSystemVersion ImageConfigGetOperatingSystemVersionAttributeType `json:"operatingSystemVersion,omitempty"`
 	// Sets the device bus when the image is used as a rescue image.
-	RescueBus *NullableString `json:"rescueBus,omitempty"`
+	RescueBus ImageConfigGetRescueBusAttributeType `json:"rescueBus,omitempty"`
 	// Sets the device when the image is used as a rescue image.
-	RescueDevice *NullableString `json:"rescueDevice,omitempty"`
+	RescueDevice ImageConfigGetRescueDeviceAttributeType `json:"rescueDevice,omitempty"`
 	// Enables Secure Boot. The default for new images is disabled.
-	SecureBoot *bool `json:"secureBoot,omitempty"`
+	SecureBoot ImageConfiggetSecureBootAttributeType `json:"secureBoot,omitempty"`
 	// Configure UEFI boot. The default for new images is enabled.
-	Uefi *bool `json:"uefi,omitempty"`
+	Uefi ImageConfiggetUefiAttributeType `json:"uefi,omitempty"`
 	// Sets Graphic device model.
-	VideoModel *NullableString `json:"videoModel,omitempty"`
+	VideoModel ImageConfigGetVideoModelAttributeType `json:"videoModel,omitempty"`
 	// Enables the use of VirtIO SCSI to provide block device access. By default servers use VirtIO Block.
-	VirtioScsi *bool `json:"virtioScsi,omitempty"`
+	VirtioScsi ImageConfiggetVirtioScsiAttributeType `json:"virtioScsi,omitempty"`
 }
 
 // NewImageConfig instantiates a new ImageConfig object
@@ -67,656 +389,458 @@ func NewImageConfigWithDefaults() *ImageConfig {
 }
 
 // GetArchitecture returns the Architecture field value if set, zero value otherwise.
-func (o *ImageConfig) GetArchitecture() *string {
-	if o == nil || IsNil(o.Architecture) {
-		var ret *string
-		return ret
-	}
-	return o.Architecture
+func (o *ImageConfig) GetArchitecture() (res ImageConfigGetArchitectureRetType) {
+	res, _ = o.GetArchitectureOk()
+	return
 }
 
 // GetArchitectureOk returns a tuple with the Architecture field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageConfig) GetArchitectureOk() (*string, bool) {
-	if o == nil || IsNil(o.Architecture) {
-		return nil, false
-	}
-	return o.Architecture, true
+func (o *ImageConfig) GetArchitectureOk() (ret ImageConfigGetArchitectureRetType, ok bool) {
+	return getImageConfigGetArchitectureAttributeTypeOk(o.Architecture)
 }
 
 // HasArchitecture returns a boolean if a field has been set.
 func (o *ImageConfig) HasArchitecture() bool {
-	if o != nil && !IsNil(o.Architecture) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetArchitectureOk()
+	return ok
 }
 
 // SetArchitecture gets a reference to the given string and assigns it to the Architecture field.
-func (o *ImageConfig) SetArchitecture(v *string) {
-	o.Architecture = v
+func (o *ImageConfig) SetArchitecture(v ImageConfigGetArchitectureRetType) {
+	setImageConfigGetArchitectureAttributeType(&o.Architecture, v)
 }
 
 // GetBootMenu returns the BootMenu field value if set, zero value otherwise.
-func (o *ImageConfig) GetBootMenu() *bool {
-	if o == nil || IsNil(o.BootMenu) {
-		var ret *bool
-		return ret
-	}
-	return o.BootMenu
+func (o *ImageConfig) GetBootMenu() (res ImageConfiggetBootMenuRetType) {
+	res, _ = o.GetBootMenuOk()
+	return
 }
 
 // GetBootMenuOk returns a tuple with the BootMenu field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageConfig) GetBootMenuOk() (*bool, bool) {
-	if o == nil || IsNil(o.BootMenu) {
-		return nil, false
-	}
-	return o.BootMenu, true
+func (o *ImageConfig) GetBootMenuOk() (ret ImageConfiggetBootMenuRetType, ok bool) {
+	return getImageConfiggetBootMenuAttributeTypeOk(o.BootMenu)
 }
 
 // HasBootMenu returns a boolean if a field has been set.
 func (o *ImageConfig) HasBootMenu() bool {
-	if o != nil && !IsNil(o.BootMenu) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetBootMenuOk()
+	return ok
 }
 
 // SetBootMenu gets a reference to the given bool and assigns it to the BootMenu field.
-func (o *ImageConfig) SetBootMenu(v *bool) {
-	o.BootMenu = v
+func (o *ImageConfig) SetBootMenu(v ImageConfiggetBootMenuRetType) {
+	setImageConfiggetBootMenuAttributeType(&o.BootMenu, v)
 }
 
 // GetCdromBus returns the CdromBus field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetCdromBus() *string {
-	if o == nil || IsNil(o.CdromBus) || IsNil(o.CdromBus.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.CdromBus.Get()
+func (o *ImageConfig) GetCdromBus() (res ImageConfigGetCdromBusRetType) {
+	res, _ = o.GetCdromBusOk()
+	return
 }
 
 // GetCdromBusOk returns a tuple with the CdromBus field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetCdromBusOk() (*string, bool) {
-	if o == nil || IsNil(o.CdromBus) {
-		return nil, false
-	}
-	return o.CdromBus.Get(), o.CdromBus.IsSet()
+func (o *ImageConfig) GetCdromBusOk() (ret ImageConfigGetCdromBusRetType, ok bool) {
+	return getImageConfigGetCdromBusAttributeTypeOk(o.CdromBus)
 }
 
 // HasCdromBus returns a boolean if a field has been set.
 func (o *ImageConfig) HasCdromBus() bool {
-	if o != nil && !IsNil(o.CdromBus) && o.CdromBus.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCdromBusOk()
+	return ok
 }
 
 // SetCdromBus gets a reference to the given string and assigns it to the CdromBus field.
-func (o *ImageConfig) SetCdromBus(v *string) {
-	if IsNil(o.CdromBus) {
-		o.CdromBus = new(NullableString)
-	}
-	o.CdromBus.Set(v)
+func (o *ImageConfig) SetCdromBus(v ImageConfigGetCdromBusRetType) {
+	setImageConfigGetCdromBusAttributeType(&o.CdromBus, v)
 }
 
 // SetCdromBusNil sets the value for CdromBus to be an explicit nil
 func (o *ImageConfig) SetCdromBusNil() {
-	if IsNil(o.CdromBus) {
-		o.CdromBus = new(NullableString)
-	}
-	o.CdromBus.Set(nil)
+	o.CdromBus = nil
 }
 
 // UnsetCdromBus ensures that no value is present for CdromBus, not even an explicit nil
 func (o *ImageConfig) UnsetCdromBus() {
-	if IsNil(o.CdromBus) {
-		o.CdromBus = new(NullableString)
-	}
-	o.CdromBus.Unset()
+	o.CdromBus = nil
 }
 
 // GetDiskBus returns the DiskBus field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetDiskBus() *string {
-	if o == nil || IsNil(o.DiskBus) || IsNil(o.DiskBus.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.DiskBus.Get()
+func (o *ImageConfig) GetDiskBus() (res ImageConfigGetDiskBusRetType) {
+	res, _ = o.GetDiskBusOk()
+	return
 }
 
 // GetDiskBusOk returns a tuple with the DiskBus field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetDiskBusOk() (*string, bool) {
-	if o == nil || IsNil(o.DiskBus) {
-		return nil, false
-	}
-	return o.DiskBus.Get(), o.DiskBus.IsSet()
+func (o *ImageConfig) GetDiskBusOk() (ret ImageConfigGetDiskBusRetType, ok bool) {
+	return getImageConfigGetDiskBusAttributeTypeOk(o.DiskBus)
 }
 
 // HasDiskBus returns a boolean if a field has been set.
 func (o *ImageConfig) HasDiskBus() bool {
-	if o != nil && !IsNil(o.DiskBus) && o.DiskBus.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDiskBusOk()
+	return ok
 }
 
 // SetDiskBus gets a reference to the given string and assigns it to the DiskBus field.
-func (o *ImageConfig) SetDiskBus(v *string) {
-	if IsNil(o.DiskBus) {
-		o.DiskBus = new(NullableString)
-	}
-	o.DiskBus.Set(v)
+func (o *ImageConfig) SetDiskBus(v ImageConfigGetDiskBusRetType) {
+	setImageConfigGetDiskBusAttributeType(&o.DiskBus, v)
 }
 
 // SetDiskBusNil sets the value for DiskBus to be an explicit nil
 func (o *ImageConfig) SetDiskBusNil() {
-	if IsNil(o.DiskBus) {
-		o.DiskBus = new(NullableString)
-	}
-	o.DiskBus.Set(nil)
+	o.DiskBus = nil
 }
 
 // UnsetDiskBus ensures that no value is present for DiskBus, not even an explicit nil
 func (o *ImageConfig) UnsetDiskBus() {
-	if IsNil(o.DiskBus) {
-		o.DiskBus = new(NullableString)
-	}
-	o.DiskBus.Unset()
+	o.DiskBus = nil
 }
 
 // GetNicModel returns the NicModel field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetNicModel() *string {
-	if o == nil || IsNil(o.NicModel) || IsNil(o.NicModel.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.NicModel.Get()
+func (o *ImageConfig) GetNicModel() (res ImageConfigGetNicModelRetType) {
+	res, _ = o.GetNicModelOk()
+	return
 }
 
 // GetNicModelOk returns a tuple with the NicModel field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetNicModelOk() (*string, bool) {
-	if o == nil || IsNil(o.NicModel) {
-		return nil, false
-	}
-	return o.NicModel.Get(), o.NicModel.IsSet()
+func (o *ImageConfig) GetNicModelOk() (ret ImageConfigGetNicModelRetType, ok bool) {
+	return getImageConfigGetNicModelAttributeTypeOk(o.NicModel)
 }
 
 // HasNicModel returns a boolean if a field has been set.
 func (o *ImageConfig) HasNicModel() bool {
-	if o != nil && !IsNil(o.NicModel) && o.NicModel.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNicModelOk()
+	return ok
 }
 
 // SetNicModel gets a reference to the given string and assigns it to the NicModel field.
-func (o *ImageConfig) SetNicModel(v *string) {
-	if IsNil(o.NicModel) {
-		o.NicModel = new(NullableString)
-	}
-	o.NicModel.Set(v)
+func (o *ImageConfig) SetNicModel(v ImageConfigGetNicModelRetType) {
+	setImageConfigGetNicModelAttributeType(&o.NicModel, v)
 }
 
 // SetNicModelNil sets the value for NicModel to be an explicit nil
 func (o *ImageConfig) SetNicModelNil() {
-	if IsNil(o.NicModel) {
-		o.NicModel = new(NullableString)
-	}
-	o.NicModel.Set(nil)
+	o.NicModel = nil
 }
 
 // UnsetNicModel ensures that no value is present for NicModel, not even an explicit nil
 func (o *ImageConfig) UnsetNicModel() {
-	if IsNil(o.NicModel) {
-		o.NicModel = new(NullableString)
-	}
-	o.NicModel.Unset()
+	o.NicModel = nil
 }
 
 // GetOperatingSystem returns the OperatingSystem field value if set, zero value otherwise.
-func (o *ImageConfig) GetOperatingSystem() *string {
-	if o == nil || IsNil(o.OperatingSystem) {
-		var ret *string
-		return ret
-	}
-	return o.OperatingSystem
+func (o *ImageConfig) GetOperatingSystem() (res ImageConfigGetOperatingSystemRetType) {
+	res, _ = o.GetOperatingSystemOk()
+	return
 }
 
 // GetOperatingSystemOk returns a tuple with the OperatingSystem field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageConfig) GetOperatingSystemOk() (*string, bool) {
-	if o == nil || IsNil(o.OperatingSystem) {
-		return nil, false
-	}
-	return o.OperatingSystem, true
+func (o *ImageConfig) GetOperatingSystemOk() (ret ImageConfigGetOperatingSystemRetType, ok bool) {
+	return getImageConfigGetOperatingSystemAttributeTypeOk(o.OperatingSystem)
 }
 
 // HasOperatingSystem returns a boolean if a field has been set.
 func (o *ImageConfig) HasOperatingSystem() bool {
-	if o != nil && !IsNil(o.OperatingSystem) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetOperatingSystemOk()
+	return ok
 }
 
 // SetOperatingSystem gets a reference to the given string and assigns it to the OperatingSystem field.
-func (o *ImageConfig) SetOperatingSystem(v *string) {
-	o.OperatingSystem = v
+func (o *ImageConfig) SetOperatingSystem(v ImageConfigGetOperatingSystemRetType) {
+	setImageConfigGetOperatingSystemAttributeType(&o.OperatingSystem, v)
 }
 
 // GetOperatingSystemDistro returns the OperatingSystemDistro field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetOperatingSystemDistro() *string {
-	if o == nil || IsNil(o.OperatingSystemDistro) || IsNil(o.OperatingSystemDistro.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.OperatingSystemDistro.Get()
+func (o *ImageConfig) GetOperatingSystemDistro() (res ImageConfigGetOperatingSystemDistroRetType) {
+	res, _ = o.GetOperatingSystemDistroOk()
+	return
 }
 
 // GetOperatingSystemDistroOk returns a tuple with the OperatingSystemDistro field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetOperatingSystemDistroOk() (*string, bool) {
-	if o == nil || IsNil(o.OperatingSystemDistro) {
-		return nil, false
-	}
-	return o.OperatingSystemDistro.Get(), o.OperatingSystemDistro.IsSet()
+func (o *ImageConfig) GetOperatingSystemDistroOk() (ret ImageConfigGetOperatingSystemDistroRetType, ok bool) {
+	return getImageConfigGetOperatingSystemDistroAttributeTypeOk(o.OperatingSystemDistro)
 }
 
 // HasOperatingSystemDistro returns a boolean if a field has been set.
 func (o *ImageConfig) HasOperatingSystemDistro() bool {
-	if o != nil && !IsNil(o.OperatingSystemDistro) && o.OperatingSystemDistro.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetOperatingSystemDistroOk()
+	return ok
 }
 
 // SetOperatingSystemDistro gets a reference to the given string and assigns it to the OperatingSystemDistro field.
-func (o *ImageConfig) SetOperatingSystemDistro(v *string) {
-	if IsNil(o.OperatingSystemDistro) {
-		o.OperatingSystemDistro = new(NullableString)
-	}
-	o.OperatingSystemDistro.Set(v)
+func (o *ImageConfig) SetOperatingSystemDistro(v ImageConfigGetOperatingSystemDistroRetType) {
+	setImageConfigGetOperatingSystemDistroAttributeType(&o.OperatingSystemDistro, v)
 }
 
 // SetOperatingSystemDistroNil sets the value for OperatingSystemDistro to be an explicit nil
 func (o *ImageConfig) SetOperatingSystemDistroNil() {
-	if IsNil(o.OperatingSystemDistro) {
-		o.OperatingSystemDistro = new(NullableString)
-	}
-	o.OperatingSystemDistro.Set(nil)
+	o.OperatingSystemDistro = nil
 }
 
 // UnsetOperatingSystemDistro ensures that no value is present for OperatingSystemDistro, not even an explicit nil
 func (o *ImageConfig) UnsetOperatingSystemDistro() {
-	if IsNil(o.OperatingSystemDistro) {
-		o.OperatingSystemDistro = new(NullableString)
-	}
-	o.OperatingSystemDistro.Unset()
+	o.OperatingSystemDistro = nil
 }
 
 // GetOperatingSystemVersion returns the OperatingSystemVersion field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetOperatingSystemVersion() *string {
-	if o == nil || IsNil(o.OperatingSystemVersion) || IsNil(o.OperatingSystemVersion.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.OperatingSystemVersion.Get()
+func (o *ImageConfig) GetOperatingSystemVersion() (res ImageConfigGetOperatingSystemVersionRetType) {
+	res, _ = o.GetOperatingSystemVersionOk()
+	return
 }
 
 // GetOperatingSystemVersionOk returns a tuple with the OperatingSystemVersion field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetOperatingSystemVersionOk() (*string, bool) {
-	if o == nil || IsNil(o.OperatingSystemVersion) {
-		return nil, false
-	}
-	return o.OperatingSystemVersion.Get(), o.OperatingSystemVersion.IsSet()
+func (o *ImageConfig) GetOperatingSystemVersionOk() (ret ImageConfigGetOperatingSystemVersionRetType, ok bool) {
+	return getImageConfigGetOperatingSystemVersionAttributeTypeOk(o.OperatingSystemVersion)
 }
 
 // HasOperatingSystemVersion returns a boolean if a field has been set.
 func (o *ImageConfig) HasOperatingSystemVersion() bool {
-	if o != nil && !IsNil(o.OperatingSystemVersion) && o.OperatingSystemVersion.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetOperatingSystemVersionOk()
+	return ok
 }
 
 // SetOperatingSystemVersion gets a reference to the given string and assigns it to the OperatingSystemVersion field.
-func (o *ImageConfig) SetOperatingSystemVersion(v *string) {
-	if IsNil(o.OperatingSystemVersion) {
-		o.OperatingSystemVersion = new(NullableString)
-	}
-	o.OperatingSystemVersion.Set(v)
+func (o *ImageConfig) SetOperatingSystemVersion(v ImageConfigGetOperatingSystemVersionRetType) {
+	setImageConfigGetOperatingSystemVersionAttributeType(&o.OperatingSystemVersion, v)
 }
 
 // SetOperatingSystemVersionNil sets the value for OperatingSystemVersion to be an explicit nil
 func (o *ImageConfig) SetOperatingSystemVersionNil() {
-	if IsNil(o.OperatingSystemVersion) {
-		o.OperatingSystemVersion = new(NullableString)
-	}
-	o.OperatingSystemVersion.Set(nil)
+	o.OperatingSystemVersion = nil
 }
 
 // UnsetOperatingSystemVersion ensures that no value is present for OperatingSystemVersion, not even an explicit nil
 func (o *ImageConfig) UnsetOperatingSystemVersion() {
-	if IsNil(o.OperatingSystemVersion) {
-		o.OperatingSystemVersion = new(NullableString)
-	}
-	o.OperatingSystemVersion.Unset()
+	o.OperatingSystemVersion = nil
 }
 
 // GetRescueBus returns the RescueBus field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetRescueBus() *string {
-	if o == nil || IsNil(o.RescueBus) || IsNil(o.RescueBus.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.RescueBus.Get()
+func (o *ImageConfig) GetRescueBus() (res ImageConfigGetRescueBusRetType) {
+	res, _ = o.GetRescueBusOk()
+	return
 }
 
 // GetRescueBusOk returns a tuple with the RescueBus field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetRescueBusOk() (*string, bool) {
-	if o == nil || IsNil(o.RescueBus) {
-		return nil, false
-	}
-	return o.RescueBus.Get(), o.RescueBus.IsSet()
+func (o *ImageConfig) GetRescueBusOk() (ret ImageConfigGetRescueBusRetType, ok bool) {
+	return getImageConfigGetRescueBusAttributeTypeOk(o.RescueBus)
 }
 
 // HasRescueBus returns a boolean if a field has been set.
 func (o *ImageConfig) HasRescueBus() bool {
-	if o != nil && !IsNil(o.RescueBus) && o.RescueBus.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRescueBusOk()
+	return ok
 }
 
 // SetRescueBus gets a reference to the given string and assigns it to the RescueBus field.
-func (o *ImageConfig) SetRescueBus(v *string) {
-	if IsNil(o.RescueBus) {
-		o.RescueBus = new(NullableString)
-	}
-	o.RescueBus.Set(v)
+func (o *ImageConfig) SetRescueBus(v ImageConfigGetRescueBusRetType) {
+	setImageConfigGetRescueBusAttributeType(&o.RescueBus, v)
 }
 
 // SetRescueBusNil sets the value for RescueBus to be an explicit nil
 func (o *ImageConfig) SetRescueBusNil() {
-	if IsNil(o.RescueBus) {
-		o.RescueBus = new(NullableString)
-	}
-	o.RescueBus.Set(nil)
+	o.RescueBus = nil
 }
 
 // UnsetRescueBus ensures that no value is present for RescueBus, not even an explicit nil
 func (o *ImageConfig) UnsetRescueBus() {
-	if IsNil(o.RescueBus) {
-		o.RescueBus = new(NullableString)
-	}
-	o.RescueBus.Unset()
+	o.RescueBus = nil
 }
 
 // GetRescueDevice returns the RescueDevice field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetRescueDevice() *string {
-	if o == nil || IsNil(o.RescueDevice) || IsNil(o.RescueDevice.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.RescueDevice.Get()
+func (o *ImageConfig) GetRescueDevice() (res ImageConfigGetRescueDeviceRetType) {
+	res, _ = o.GetRescueDeviceOk()
+	return
 }
 
 // GetRescueDeviceOk returns a tuple with the RescueDevice field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetRescueDeviceOk() (*string, bool) {
-	if o == nil || IsNil(o.RescueDevice) {
-		return nil, false
-	}
-	return o.RescueDevice.Get(), o.RescueDevice.IsSet()
+func (o *ImageConfig) GetRescueDeviceOk() (ret ImageConfigGetRescueDeviceRetType, ok bool) {
+	return getImageConfigGetRescueDeviceAttributeTypeOk(o.RescueDevice)
 }
 
 // HasRescueDevice returns a boolean if a field has been set.
 func (o *ImageConfig) HasRescueDevice() bool {
-	if o != nil && !IsNil(o.RescueDevice) && o.RescueDevice.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRescueDeviceOk()
+	return ok
 }
 
 // SetRescueDevice gets a reference to the given string and assigns it to the RescueDevice field.
-func (o *ImageConfig) SetRescueDevice(v *string) {
-	if IsNil(o.RescueDevice) {
-		o.RescueDevice = new(NullableString)
-	}
-	o.RescueDevice.Set(v)
+func (o *ImageConfig) SetRescueDevice(v ImageConfigGetRescueDeviceRetType) {
+	setImageConfigGetRescueDeviceAttributeType(&o.RescueDevice, v)
 }
 
 // SetRescueDeviceNil sets the value for RescueDevice to be an explicit nil
 func (o *ImageConfig) SetRescueDeviceNil() {
-	if IsNil(o.RescueDevice) {
-		o.RescueDevice = new(NullableString)
-	}
-	o.RescueDevice.Set(nil)
+	o.RescueDevice = nil
 }
 
 // UnsetRescueDevice ensures that no value is present for RescueDevice, not even an explicit nil
 func (o *ImageConfig) UnsetRescueDevice() {
-	if IsNil(o.RescueDevice) {
-		o.RescueDevice = new(NullableString)
-	}
-	o.RescueDevice.Unset()
+	o.RescueDevice = nil
 }
 
 // GetSecureBoot returns the SecureBoot field value if set, zero value otherwise.
-func (o *ImageConfig) GetSecureBoot() *bool {
-	if o == nil || IsNil(o.SecureBoot) {
-		var ret *bool
-		return ret
-	}
-	return o.SecureBoot
+func (o *ImageConfig) GetSecureBoot() (res ImageConfiggetSecureBootRetType) {
+	res, _ = o.GetSecureBootOk()
+	return
 }
 
 // GetSecureBootOk returns a tuple with the SecureBoot field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageConfig) GetSecureBootOk() (*bool, bool) {
-	if o == nil || IsNil(o.SecureBoot) {
-		return nil, false
-	}
-	return o.SecureBoot, true
+func (o *ImageConfig) GetSecureBootOk() (ret ImageConfiggetSecureBootRetType, ok bool) {
+	return getImageConfiggetSecureBootAttributeTypeOk(o.SecureBoot)
 }
 
 // HasSecureBoot returns a boolean if a field has been set.
 func (o *ImageConfig) HasSecureBoot() bool {
-	if o != nil && !IsNil(o.SecureBoot) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecureBootOk()
+	return ok
 }
 
 // SetSecureBoot gets a reference to the given bool and assigns it to the SecureBoot field.
-func (o *ImageConfig) SetSecureBoot(v *bool) {
-	o.SecureBoot = v
+func (o *ImageConfig) SetSecureBoot(v ImageConfiggetSecureBootRetType) {
+	setImageConfiggetSecureBootAttributeType(&o.SecureBoot, v)
 }
 
 // GetUefi returns the Uefi field value if set, zero value otherwise.
-func (o *ImageConfig) GetUefi() *bool {
-	if o == nil || IsNil(o.Uefi) {
-		var ret *bool
-		return ret
-	}
-	return o.Uefi
+func (o *ImageConfig) GetUefi() (res ImageConfiggetUefiRetType) {
+	res, _ = o.GetUefiOk()
+	return
 }
 
 // GetUefiOk returns a tuple with the Uefi field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageConfig) GetUefiOk() (*bool, bool) {
-	if o == nil || IsNil(o.Uefi) {
-		return nil, false
-	}
-	return o.Uefi, true
+func (o *ImageConfig) GetUefiOk() (ret ImageConfiggetUefiRetType, ok bool) {
+	return getImageConfiggetUefiAttributeTypeOk(o.Uefi)
 }
 
 // HasUefi returns a boolean if a field has been set.
 func (o *ImageConfig) HasUefi() bool {
-	if o != nil && !IsNil(o.Uefi) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUefiOk()
+	return ok
 }
 
 // SetUefi gets a reference to the given bool and assigns it to the Uefi field.
-func (o *ImageConfig) SetUefi(v *bool) {
-	o.Uefi = v
+func (o *ImageConfig) SetUefi(v ImageConfiggetUefiRetType) {
+	setImageConfiggetUefiAttributeType(&o.Uefi, v)
 }
 
 // GetVideoModel returns the VideoModel field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *ImageConfig) GetVideoModel() *string {
-	if o == nil || IsNil(o.VideoModel) || IsNil(o.VideoModel.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.VideoModel.Get()
+func (o *ImageConfig) GetVideoModel() (res ImageConfigGetVideoModelRetType) {
+	res, _ = o.GetVideoModelOk()
+	return
 }
 
 // GetVideoModelOk returns a tuple with the VideoModel field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *ImageConfig) GetVideoModelOk() (*string, bool) {
-	if o == nil || IsNil(o.VideoModel) {
-		return nil, false
-	}
-	return o.VideoModel.Get(), o.VideoModel.IsSet()
+func (o *ImageConfig) GetVideoModelOk() (ret ImageConfigGetVideoModelRetType, ok bool) {
+	return getImageConfigGetVideoModelAttributeTypeOk(o.VideoModel)
 }
 
 // HasVideoModel returns a boolean if a field has been set.
 func (o *ImageConfig) HasVideoModel() bool {
-	if o != nil && !IsNil(o.VideoModel) && o.VideoModel.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVideoModelOk()
+	return ok
 }
 
 // SetVideoModel gets a reference to the given string and assigns it to the VideoModel field.
-func (o *ImageConfig) SetVideoModel(v *string) {
-	if IsNil(o.VideoModel) {
-		o.VideoModel = new(NullableString)
-	}
-	o.VideoModel.Set(v)
+func (o *ImageConfig) SetVideoModel(v ImageConfigGetVideoModelRetType) {
+	setImageConfigGetVideoModelAttributeType(&o.VideoModel, v)
 }
 
 // SetVideoModelNil sets the value for VideoModel to be an explicit nil
 func (o *ImageConfig) SetVideoModelNil() {
-	if IsNil(o.VideoModel) {
-		o.VideoModel = new(NullableString)
-	}
-	o.VideoModel.Set(nil)
+	o.VideoModel = nil
 }
 
 // UnsetVideoModel ensures that no value is present for VideoModel, not even an explicit nil
 func (o *ImageConfig) UnsetVideoModel() {
-	if IsNil(o.VideoModel) {
-		o.VideoModel = new(NullableString)
-	}
-	o.VideoModel.Unset()
+	o.VideoModel = nil
 }
 
 // GetVirtioScsi returns the VirtioScsi field value if set, zero value otherwise.
-func (o *ImageConfig) GetVirtioScsi() *bool {
-	if o == nil || IsNil(o.VirtioScsi) {
-		var ret *bool
-		return ret
-	}
-	return o.VirtioScsi
+func (o *ImageConfig) GetVirtioScsi() (res ImageConfiggetVirtioScsiRetType) {
+	res, _ = o.GetVirtioScsiOk()
+	return
 }
 
 // GetVirtioScsiOk returns a tuple with the VirtioScsi field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageConfig) GetVirtioScsiOk() (*bool, bool) {
-	if o == nil || IsNil(o.VirtioScsi) {
-		return nil, false
-	}
-	return o.VirtioScsi, true
+func (o *ImageConfig) GetVirtioScsiOk() (ret ImageConfiggetVirtioScsiRetType, ok bool) {
+	return getImageConfiggetVirtioScsiAttributeTypeOk(o.VirtioScsi)
 }
 
 // HasVirtioScsi returns a boolean if a field has been set.
 func (o *ImageConfig) HasVirtioScsi() bool {
-	if o != nil && !IsNil(o.VirtioScsi) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVirtioScsiOk()
+	return ok
 }
 
 // SetVirtioScsi gets a reference to the given bool and assigns it to the VirtioScsi field.
-func (o *ImageConfig) SetVirtioScsi(v *bool) {
-	o.VirtioScsi = v
+func (o *ImageConfig) SetVirtioScsi(v ImageConfiggetVirtioScsiRetType) {
+	setImageConfiggetVirtioScsiAttributeType(&o.VirtioScsi, v)
 }
 
 func (o ImageConfig) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Architecture) {
-		toSerialize["architecture"] = o.Architecture
+	if val, ok := getImageConfigGetArchitectureAttributeTypeOk(o.Architecture); ok {
+		toSerialize["Architecture"] = val
 	}
-	if !IsNil(o.BootMenu) {
-		toSerialize["bootMenu"] = o.BootMenu
+	if val, ok := getImageConfiggetBootMenuAttributeTypeOk(o.BootMenu); ok {
+		toSerialize["BootMenu"] = val
 	}
-	if o.CdromBus.IsSet() {
-		toSerialize["cdromBus"] = o.CdromBus.Get()
+	if val, ok := getImageConfigGetCdromBusAttributeTypeOk(o.CdromBus); ok {
+		toSerialize["CdromBus"] = val
 	}
-	if o.DiskBus.IsSet() {
-		toSerialize["diskBus"] = o.DiskBus.Get()
+	if val, ok := getImageConfigGetDiskBusAttributeTypeOk(o.DiskBus); ok {
+		toSerialize["DiskBus"] = val
 	}
-	if o.NicModel.IsSet() {
-		toSerialize["nicModel"] = o.NicModel.Get()
+	if val, ok := getImageConfigGetNicModelAttributeTypeOk(o.NicModel); ok {
+		toSerialize["NicModel"] = val
 	}
-	if !IsNil(o.OperatingSystem) {
-		toSerialize["operatingSystem"] = o.OperatingSystem
+	if val, ok := getImageConfigGetOperatingSystemAttributeTypeOk(o.OperatingSystem); ok {
+		toSerialize["OperatingSystem"] = val
 	}
-	if o.OperatingSystemDistro.IsSet() {
-		toSerialize["operatingSystemDistro"] = o.OperatingSystemDistro.Get()
+	if val, ok := getImageConfigGetOperatingSystemDistroAttributeTypeOk(o.OperatingSystemDistro); ok {
+		toSerialize["OperatingSystemDistro"] = val
 	}
-	if o.OperatingSystemVersion.IsSet() {
-		toSerialize["operatingSystemVersion"] = o.OperatingSystemVersion.Get()
+	if val, ok := getImageConfigGetOperatingSystemVersionAttributeTypeOk(o.OperatingSystemVersion); ok {
+		toSerialize["OperatingSystemVersion"] = val
 	}
-	if o.RescueBus.IsSet() {
-		toSerialize["rescueBus"] = o.RescueBus.Get()
+	if val, ok := getImageConfigGetRescueBusAttributeTypeOk(o.RescueBus); ok {
+		toSerialize["RescueBus"] = val
 	}
-	if o.RescueDevice.IsSet() {
-		toSerialize["rescueDevice"] = o.RescueDevice.Get()
+	if val, ok := getImageConfigGetRescueDeviceAttributeTypeOk(o.RescueDevice); ok {
+		toSerialize["RescueDevice"] = val
 	}
-	if !IsNil(o.SecureBoot) {
-		toSerialize["secureBoot"] = o.SecureBoot
+	if val, ok := getImageConfiggetSecureBootAttributeTypeOk(o.SecureBoot); ok {
+		toSerialize["SecureBoot"] = val
 	}
-	if !IsNil(o.Uefi) {
-		toSerialize["uefi"] = o.Uefi
+	if val, ok := getImageConfiggetUefiAttributeTypeOk(o.Uefi); ok {
+		toSerialize["Uefi"] = val
 	}
-	if o.VideoModel.IsSet() {
-		toSerialize["videoModel"] = o.VideoModel.Get()
+	if val, ok := getImageConfigGetVideoModelAttributeTypeOk(o.VideoModel); ok {
+		toSerialize["VideoModel"] = val
 	}
-	if !IsNil(o.VirtioScsi) {
-		toSerialize["virtioScsi"] = o.VirtioScsi
+	if val, ok := getImageConfiggetVirtioScsiAttributeTypeOk(o.VirtioScsi); ok {
+		toSerialize["VirtioScsi"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_image_create_response.go b/services/iaas/model_image_create_response.go
index bd016053f..0779b56c6 100644
--- a/services/iaas/model_image_create_response.go
+++ b/services/iaas/model_image_create_response.go
@@ -17,13 +17,55 @@ import (
 // checks if the ImageCreateResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ImageCreateResponse{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type ImageCreateResponseGetIdAttributeType = *string
+
+func getImageCreateResponseGetIdAttributeTypeOk(arg ImageCreateResponseGetIdAttributeType) (ret ImageCreateResponseGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageCreateResponseGetIdAttributeType(arg *ImageCreateResponseGetIdAttributeType, val ImageCreateResponseGetIdRetType) {
+	*arg = &val
+}
+
+type ImageCreateResponseGetIdArgType = string
+type ImageCreateResponseGetIdRetType = string
+
+/*
+	types and functions for uploadUrl
+*/
+
+// isNotNullableString
+type ImageCreateResponseGetUploadUrlAttributeType = *string
+
+func getImageCreateResponseGetUploadUrlAttributeTypeOk(arg ImageCreateResponseGetUploadUrlAttributeType) (ret ImageCreateResponseGetUploadUrlRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageCreateResponseGetUploadUrlAttributeType(arg *ImageCreateResponseGetUploadUrlAttributeType, val ImageCreateResponseGetUploadUrlRetType) {
+	*arg = &val
+}
+
+type ImageCreateResponseGetUploadUrlArgType = string
+type ImageCreateResponseGetUploadUrlRetType = string
+
 // ImageCreateResponse Image creation response.
 type ImageCreateResponse struct {
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	Id *string `json:"id"`
+	Id ImageCreateResponseGetIdAttributeType `json:"id"`
 	// REQUIRED
-	UploadUrl *string `json:"uploadUrl"`
+	UploadUrl ImageCreateResponseGetUploadUrlAttributeType `json:"uploadUrl"`
 }
 
 type _ImageCreateResponse ImageCreateResponse
@@ -32,10 +74,10 @@ type _ImageCreateResponse ImageCreateResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewImageCreateResponse(id *string, uploadUrl *string) *ImageCreateResponse {
+func NewImageCreateResponse(id ImageCreateResponseGetIdArgType, uploadUrl ImageCreateResponseGetUploadUrlArgType) *ImageCreateResponse {
 	this := ImageCreateResponse{}
-	this.Id = id
-	this.UploadUrl = uploadUrl
+	setImageCreateResponseGetIdAttributeType(&this.Id, id)
+	setImageCreateResponseGetUploadUrlAttributeType(&this.UploadUrl, uploadUrl)
 	return &this
 }
 
@@ -48,57 +90,47 @@ func NewImageCreateResponseWithDefaults() *ImageCreateResponse {
 }
 
 // GetId returns the Id field value
-func (o *ImageCreateResponse) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-
-	return o.Id
+func (o *ImageCreateResponse) GetId() (ret ImageCreateResponseGetIdRetType) {
+	ret, _ = o.GetIdOk()
+	return ret
 }
 
 // GetIdOk returns a tuple with the Id field value
 // and a boolean to check if the value has been set.
-func (o *ImageCreateResponse) GetIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Id, true
+func (o *ImageCreateResponse) GetIdOk() (ret ImageCreateResponseGetIdRetType, ok bool) {
+	return getImageCreateResponseGetIdAttributeTypeOk(o.Id)
 }
 
 // SetId sets field value
-func (o *ImageCreateResponse) SetId(v *string) {
-	o.Id = v
+func (o *ImageCreateResponse) SetId(v ImageCreateResponseGetIdRetType) {
+	setImageCreateResponseGetIdAttributeType(&o.Id, v)
 }
 
 // GetUploadUrl returns the UploadUrl field value
-func (o *ImageCreateResponse) GetUploadUrl() *string {
-	if o == nil || IsNil(o.UploadUrl) {
-		var ret *string
-		return ret
-	}
-
-	return o.UploadUrl
+func (o *ImageCreateResponse) GetUploadUrl() (ret ImageCreateResponseGetUploadUrlRetType) {
+	ret, _ = o.GetUploadUrlOk()
+	return ret
 }
 
 // GetUploadUrlOk returns a tuple with the UploadUrl field value
 // and a boolean to check if the value has been set.
-func (o *ImageCreateResponse) GetUploadUrlOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.UploadUrl, true
+func (o *ImageCreateResponse) GetUploadUrlOk() (ret ImageCreateResponseGetUploadUrlRetType, ok bool) {
+	return getImageCreateResponseGetUploadUrlAttributeTypeOk(o.UploadUrl)
 }
 
 // SetUploadUrl sets field value
-func (o *ImageCreateResponse) SetUploadUrl(v *string) {
-	o.UploadUrl = v
+func (o *ImageCreateResponse) SetUploadUrl(v ImageCreateResponseGetUploadUrlRetType) {
+	setImageCreateResponseGetUploadUrlAttributeType(&o.UploadUrl, v)
 }
 
 func (o ImageCreateResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["id"] = o.Id
-	toSerialize["uploadUrl"] = o.UploadUrl
+	if val, ok := getImageCreateResponseGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
+	}
+	if val, ok := getImageCreateResponseGetUploadUrlAttributeTypeOk(o.UploadUrl); ok {
+		toSerialize["UploadUrl"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_image_list_response.go b/services/iaas/model_image_list_response.go
index 13506e806..078633469 100644
--- a/services/iaas/model_image_list_response.go
+++ b/services/iaas/model_image_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the ImageListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ImageListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type ImageListResponseGetItemsAttributeType = *[]Image
+type ImageListResponseGetItemsArgType = []Image
+type ImageListResponseGetItemsRetType = []Image
+
+func getImageListResponseGetItemsAttributeTypeOk(arg ImageListResponseGetItemsAttributeType) (ret ImageListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageListResponseGetItemsAttributeType(arg *ImageListResponseGetItemsAttributeType, val ImageListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // ImageListResponse Image list response.
 type ImageListResponse struct {
 	// A list containing image objects.
 	// REQUIRED
-	Items *[]Image `json:"items"`
+	Items ImageListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _ImageListResponse ImageListResponse
@@ -30,9 +50,9 @@ type _ImageListResponse ImageListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewImageListResponse(items *[]Image) *ImageListResponse {
+func NewImageListResponse(items ImageListResponseGetItemsArgType) *ImageListResponse {
 	this := ImageListResponse{}
-	this.Items = items
+	setImageListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewImageListResponseWithDefaults() *ImageListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *ImageListResponse) GetItems() *[]Image {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Image
-		return ret
-	}
-
-	return o.Items
+func (o *ImageListResponse) GetItems() (ret ImageListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *ImageListResponse) GetItemsOk() (*[]Image, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *ImageListResponse) GetItemsOk() (ret ImageListResponseGetItemsRetType, ok bool) {
+	return getImageListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *ImageListResponse) SetItems(v *[]Image) {
-	o.Items = v
+func (o *ImageListResponse) SetItems(v ImageListResponseGetItemsRetType) {
+	setImageListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o ImageListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getImageListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_image_share.go b/services/iaas/model_image_share.go
index 21726d7ae..3689e2b55 100644
--- a/services/iaas/model_image_share.go
+++ b/services/iaas/model_image_share.go
@@ -17,12 +17,52 @@ import (
 // checks if the ImageShare type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ImageShare{}
 
+/*
+	types and functions for parentOrganization
+*/
+
+// isBoolean
+type ImageSharegetParentOrganizationAttributeType = *bool
+type ImageSharegetParentOrganizationArgType = bool
+type ImageSharegetParentOrganizationRetType = bool
+
+func getImageSharegetParentOrganizationAttributeTypeOk(arg ImageSharegetParentOrganizationAttributeType) (ret ImageSharegetParentOrganizationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageSharegetParentOrganizationAttributeType(arg *ImageSharegetParentOrganizationAttributeType, val ImageSharegetParentOrganizationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for projects
+*/
+
+// isArray
+type ImageShareGetProjectsAttributeType = *[]string
+type ImageShareGetProjectsArgType = []string
+type ImageShareGetProjectsRetType = []string
+
+func getImageShareGetProjectsAttributeTypeOk(arg ImageShareGetProjectsAttributeType) (ret ImageShareGetProjectsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageShareGetProjectsAttributeType(arg *ImageShareGetProjectsAttributeType, val ImageShareGetProjectsRetType) {
+	*arg = &val
+}
+
 // ImageShare Share details of an Image. For requests ParentOrganization and Projects are mutually exclusive.
 type ImageShare struct {
 	// Image is shared with all projects inside the image owners organization.
-	ParentOrganization *bool `json:"parentOrganization,omitempty"`
+	ParentOrganization ImageSharegetParentOrganizationAttributeType `json:"parentOrganization,omitempty"`
 	// List of all projects the Image is shared with.
-	Projects *[]string `json:"projects,omitempty"`
+	Projects ImageShareGetProjectsAttributeType `json:"projects,omitempty"`
 }
 
 // NewImageShare instantiates a new ImageShare object
@@ -43,76 +83,58 @@ func NewImageShareWithDefaults() *ImageShare {
 }
 
 // GetParentOrganization returns the ParentOrganization field value if set, zero value otherwise.
-func (o *ImageShare) GetParentOrganization() *bool {
-	if o == nil || IsNil(o.ParentOrganization) {
-		var ret *bool
-		return ret
-	}
-	return o.ParentOrganization
+func (o *ImageShare) GetParentOrganization() (res ImageSharegetParentOrganizationRetType) {
+	res, _ = o.GetParentOrganizationOk()
+	return
 }
 
 // GetParentOrganizationOk returns a tuple with the ParentOrganization field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageShare) GetParentOrganizationOk() (*bool, bool) {
-	if o == nil || IsNil(o.ParentOrganization) {
-		return nil, false
-	}
-	return o.ParentOrganization, true
+func (o *ImageShare) GetParentOrganizationOk() (ret ImageSharegetParentOrganizationRetType, ok bool) {
+	return getImageSharegetParentOrganizationAttributeTypeOk(o.ParentOrganization)
 }
 
 // HasParentOrganization returns a boolean if a field has been set.
 func (o *ImageShare) HasParentOrganization() bool {
-	if o != nil && !IsNil(o.ParentOrganization) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetParentOrganizationOk()
+	return ok
 }
 
 // SetParentOrganization gets a reference to the given bool and assigns it to the ParentOrganization field.
-func (o *ImageShare) SetParentOrganization(v *bool) {
-	o.ParentOrganization = v
+func (o *ImageShare) SetParentOrganization(v ImageSharegetParentOrganizationRetType) {
+	setImageSharegetParentOrganizationAttributeType(&o.ParentOrganization, v)
 }
 
 // GetProjects returns the Projects field value if set, zero value otherwise.
-func (o *ImageShare) GetProjects() *[]string {
-	if o == nil || IsNil(o.Projects) {
-		var ret *[]string
-		return ret
-	}
-	return o.Projects
+func (o *ImageShare) GetProjects() (res ImageShareGetProjectsRetType) {
+	res, _ = o.GetProjectsOk()
+	return
 }
 
 // GetProjectsOk returns a tuple with the Projects field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageShare) GetProjectsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Projects) {
-		return nil, false
-	}
-	return o.Projects, true
+func (o *ImageShare) GetProjectsOk() (ret ImageShareGetProjectsRetType, ok bool) {
+	return getImageShareGetProjectsAttributeTypeOk(o.Projects)
 }
 
 // HasProjects returns a boolean if a field has been set.
 func (o *ImageShare) HasProjects() bool {
-	if o != nil && !IsNil(o.Projects) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProjectsOk()
+	return ok
 }
 
 // SetProjects gets a reference to the given []string and assigns it to the Projects field.
-func (o *ImageShare) SetProjects(v *[]string) {
-	o.Projects = v
+func (o *ImageShare) SetProjects(v ImageShareGetProjectsRetType) {
+	setImageShareGetProjectsAttributeType(&o.Projects, v)
 }
 
 func (o ImageShare) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.ParentOrganization) {
-		toSerialize["parentOrganization"] = o.ParentOrganization
+	if val, ok := getImageSharegetParentOrganizationAttributeTypeOk(o.ParentOrganization); ok {
+		toSerialize["ParentOrganization"] = val
 	}
-	if !IsNil(o.Projects) {
-		toSerialize["projects"] = o.Projects
+	if val, ok := getImageShareGetProjectsAttributeTypeOk(o.Projects); ok {
+		toSerialize["Projects"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_image_share_consumer.go b/services/iaas/model_image_share_consumer.go
index 056239588..ae4a0afa0 100644
--- a/services/iaas/model_image_share_consumer.go
+++ b/services/iaas/model_image_share_consumer.go
@@ -18,16 +18,98 @@ import (
 // checks if the ImageShareConsumer type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ImageShareConsumer{}
 
+/*
+	types and functions for consumerProjectId
+*/
+
+// isNotNullableString
+type ImageShareConsumerGetConsumerProjectIdAttributeType = *string
+
+func getImageShareConsumerGetConsumerProjectIdAttributeTypeOk(arg ImageShareConsumerGetConsumerProjectIdAttributeType) (ret ImageShareConsumerGetConsumerProjectIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageShareConsumerGetConsumerProjectIdAttributeType(arg *ImageShareConsumerGetConsumerProjectIdAttributeType, val ImageShareConsumerGetConsumerProjectIdRetType) {
+	*arg = &val
+}
+
+type ImageShareConsumerGetConsumerProjectIdArgType = string
+type ImageShareConsumerGetConsumerProjectIdRetType = string
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type ImageShareConsumerGetCreatedAtAttributeType = *time.Time
+type ImageShareConsumerGetCreatedAtArgType = time.Time
+type ImageShareConsumerGetCreatedAtRetType = time.Time
+
+func getImageShareConsumerGetCreatedAtAttributeTypeOk(arg ImageShareConsumerGetCreatedAtAttributeType) (ret ImageShareConsumerGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageShareConsumerGetCreatedAtAttributeType(arg *ImageShareConsumerGetCreatedAtAttributeType, val ImageShareConsumerGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for imageId
+*/
+
+// isNotNullableString
+type ImageShareConsumerGetImageIdAttributeType = *string
+
+func getImageShareConsumerGetImageIdAttributeTypeOk(arg ImageShareConsumerGetImageIdAttributeType) (ret ImageShareConsumerGetImageIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageShareConsumerGetImageIdAttributeType(arg *ImageShareConsumerGetImageIdAttributeType, val ImageShareConsumerGetImageIdRetType) {
+	*arg = &val
+}
+
+type ImageShareConsumerGetImageIdArgType = string
+type ImageShareConsumerGetImageIdRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type ImageShareConsumerGetUpdatedAtAttributeType = *time.Time
+type ImageShareConsumerGetUpdatedAtArgType = time.Time
+type ImageShareConsumerGetUpdatedAtRetType = time.Time
+
+func getImageShareConsumerGetUpdatedAtAttributeTypeOk(arg ImageShareConsumerGetUpdatedAtAttributeType) (ret ImageShareConsumerGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setImageShareConsumerGetUpdatedAtAttributeType(arg *ImageShareConsumerGetUpdatedAtAttributeType, val ImageShareConsumerGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // ImageShareConsumer The details of an Image share consumer.
 type ImageShareConsumer struct {
 	// Universally Unique Identifier (UUID).
-	ConsumerProjectId *string `json:"consumerProjectId,omitempty"`
+	ConsumerProjectId ImageShareConsumerGetConsumerProjectIdAttributeType `json:"consumerProjectId,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt ImageShareConsumerGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ImageId *string `json:"imageId,omitempty"`
+	ImageId ImageShareConsumerGetImageIdAttributeType `json:"imageId,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt ImageShareConsumerGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 // NewImageShareConsumer instantiates a new ImageShareConsumer object
@@ -48,146 +130,110 @@ func NewImageShareConsumerWithDefaults() *ImageShareConsumer {
 }
 
 // GetConsumerProjectId returns the ConsumerProjectId field value if set, zero value otherwise.
-func (o *ImageShareConsumer) GetConsumerProjectId() *string {
-	if o == nil || IsNil(o.ConsumerProjectId) {
-		var ret *string
-		return ret
-	}
-	return o.ConsumerProjectId
+func (o *ImageShareConsumer) GetConsumerProjectId() (res ImageShareConsumerGetConsumerProjectIdRetType) {
+	res, _ = o.GetConsumerProjectIdOk()
+	return
 }
 
 // GetConsumerProjectIdOk returns a tuple with the ConsumerProjectId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageShareConsumer) GetConsumerProjectIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ConsumerProjectId) {
-		return nil, false
-	}
-	return o.ConsumerProjectId, true
+func (o *ImageShareConsumer) GetConsumerProjectIdOk() (ret ImageShareConsumerGetConsumerProjectIdRetType, ok bool) {
+	return getImageShareConsumerGetConsumerProjectIdAttributeTypeOk(o.ConsumerProjectId)
 }
 
 // HasConsumerProjectId returns a boolean if a field has been set.
 func (o *ImageShareConsumer) HasConsumerProjectId() bool {
-	if o != nil && !IsNil(o.ConsumerProjectId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetConsumerProjectIdOk()
+	return ok
 }
 
 // SetConsumerProjectId gets a reference to the given string and assigns it to the ConsumerProjectId field.
-func (o *ImageShareConsumer) SetConsumerProjectId(v *string) {
-	o.ConsumerProjectId = v
+func (o *ImageShareConsumer) SetConsumerProjectId(v ImageShareConsumerGetConsumerProjectIdRetType) {
+	setImageShareConsumerGetConsumerProjectIdAttributeType(&o.ConsumerProjectId, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *ImageShareConsumer) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *ImageShareConsumer) GetCreatedAt() (res ImageShareConsumerGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageShareConsumer) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *ImageShareConsumer) GetCreatedAtOk() (ret ImageShareConsumerGetCreatedAtRetType, ok bool) {
+	return getImageShareConsumerGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *ImageShareConsumer) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *ImageShareConsumer) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *ImageShareConsumer) SetCreatedAt(v ImageShareConsumerGetCreatedAtRetType) {
+	setImageShareConsumerGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetImageId returns the ImageId field value if set, zero value otherwise.
-func (o *ImageShareConsumer) GetImageId() *string {
-	if o == nil || IsNil(o.ImageId) {
-		var ret *string
-		return ret
-	}
-	return o.ImageId
+func (o *ImageShareConsumer) GetImageId() (res ImageShareConsumerGetImageIdRetType) {
+	res, _ = o.GetImageIdOk()
+	return
 }
 
 // GetImageIdOk returns a tuple with the ImageId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageShareConsumer) GetImageIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ImageId) {
-		return nil, false
-	}
-	return o.ImageId, true
+func (o *ImageShareConsumer) GetImageIdOk() (ret ImageShareConsumerGetImageIdRetType, ok bool) {
+	return getImageShareConsumerGetImageIdAttributeTypeOk(o.ImageId)
 }
 
 // HasImageId returns a boolean if a field has been set.
 func (o *ImageShareConsumer) HasImageId() bool {
-	if o != nil && !IsNil(o.ImageId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetImageIdOk()
+	return ok
 }
 
 // SetImageId gets a reference to the given string and assigns it to the ImageId field.
-func (o *ImageShareConsumer) SetImageId(v *string) {
-	o.ImageId = v
+func (o *ImageShareConsumer) SetImageId(v ImageShareConsumerGetImageIdRetType) {
+	setImageShareConsumerGetImageIdAttributeType(&o.ImageId, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *ImageShareConsumer) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *ImageShareConsumer) GetUpdatedAt() (res ImageShareConsumerGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ImageShareConsumer) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *ImageShareConsumer) GetUpdatedAtOk() (ret ImageShareConsumerGetUpdatedAtRetType, ok bool) {
+	return getImageShareConsumerGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *ImageShareConsumer) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *ImageShareConsumer) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *ImageShareConsumer) SetUpdatedAt(v ImageShareConsumerGetUpdatedAtRetType) {
+	setImageShareConsumerGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o ImageShareConsumer) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.ConsumerProjectId) {
-		toSerialize["consumerProjectId"] = o.ConsumerProjectId
+	if val, ok := getImageShareConsumerGetConsumerProjectIdAttributeTypeOk(o.ConsumerProjectId); ok {
+		toSerialize["ConsumerProjectId"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getImageShareConsumerGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.ImageId) {
-		toSerialize["imageId"] = o.ImageId
+	if val, ok := getImageShareConsumerGetImageIdAttributeTypeOk(o.ImageId); ok {
+		toSerialize["ImageId"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getImageShareConsumerGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_key_pair_list_response.go b/services/iaas/model_key_pair_list_response.go
index 07c903483..86f63c405 100644
--- a/services/iaas/model_key_pair_list_response.go
+++ b/services/iaas/model_key_pair_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the KeyPairListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &KeyPairListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type KeyPairListResponseGetItemsAttributeType = *[]Keypair
+type KeyPairListResponseGetItemsArgType = []Keypair
+type KeyPairListResponseGetItemsRetType = []Keypair
+
+func getKeyPairListResponseGetItemsAttributeTypeOk(arg KeyPairListResponseGetItemsAttributeType) (ret KeyPairListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setKeyPairListResponseGetItemsAttributeType(arg *KeyPairListResponseGetItemsAttributeType, val KeyPairListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // KeyPairListResponse SSH keypair list response.
 type KeyPairListResponse struct {
 	// A list of SSH keypairs.
 	// REQUIRED
-	Items *[]Keypair `json:"items"`
+	Items KeyPairListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _KeyPairListResponse KeyPairListResponse
@@ -30,9 +50,9 @@ type _KeyPairListResponse KeyPairListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewKeyPairListResponse(items *[]Keypair) *KeyPairListResponse {
+func NewKeyPairListResponse(items KeyPairListResponseGetItemsArgType) *KeyPairListResponse {
 	this := KeyPairListResponse{}
-	this.Items = items
+	setKeyPairListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewKeyPairListResponseWithDefaults() *KeyPairListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *KeyPairListResponse) GetItems() *[]Keypair {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Keypair
-		return ret
-	}
-
-	return o.Items
+func (o *KeyPairListResponse) GetItems() (ret KeyPairListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *KeyPairListResponse) GetItemsOk() (*[]Keypair, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *KeyPairListResponse) GetItemsOk() (ret KeyPairListResponseGetItemsRetType, ok bool) {
+	return getKeyPairListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *KeyPairListResponse) SetItems(v *[]Keypair) {
-	o.Items = v
+func (o *KeyPairListResponse) SetItems(v KeyPairListResponseGetItemsRetType) {
+	setKeyPairListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o KeyPairListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getKeyPairListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_keypair.go b/services/iaas/model_keypair.go
index 4deffa6d7..69eeec2cb 100644
--- a/services/iaas/model_keypair.go
+++ b/services/iaas/model_keypair.go
@@ -18,21 +18,144 @@ import (
 // checks if the Keypair type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Keypair{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type KeypairGetCreatedAtAttributeType = *time.Time
+type KeypairGetCreatedAtArgType = time.Time
+type KeypairGetCreatedAtRetType = time.Time
+
+func getKeypairGetCreatedAtAttributeTypeOk(arg KeypairGetCreatedAtAttributeType) (ret KeypairGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setKeypairGetCreatedAtAttributeType(arg *KeypairGetCreatedAtAttributeType, val KeypairGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for fingerprint
+*/
+
+// isNotNullableString
+type KeypairGetFingerprintAttributeType = *string
+
+func getKeypairGetFingerprintAttributeTypeOk(arg KeypairGetFingerprintAttributeType) (ret KeypairGetFingerprintRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setKeypairGetFingerprintAttributeType(arg *KeypairGetFingerprintAttributeType, val KeypairGetFingerprintRetType) {
+	*arg = &val
+}
+
+type KeypairGetFingerprintArgType = string
+type KeypairGetFingerprintRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type KeypairGetLabelsAttributeType = *map[string]interface{}
+type KeypairGetLabelsArgType = map[string]interface{}
+type KeypairGetLabelsRetType = map[string]interface{}
+
+func getKeypairGetLabelsAttributeTypeOk(arg KeypairGetLabelsAttributeType) (ret KeypairGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setKeypairGetLabelsAttributeType(arg *KeypairGetLabelsAttributeType, val KeypairGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type KeypairGetNameAttributeType = *string
+
+func getKeypairGetNameAttributeTypeOk(arg KeypairGetNameAttributeType) (ret KeypairGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setKeypairGetNameAttributeType(arg *KeypairGetNameAttributeType, val KeypairGetNameRetType) {
+	*arg = &val
+}
+
+type KeypairGetNameArgType = string
+type KeypairGetNameRetType = string
+
+/*
+	types and functions for publicKey
+*/
+
+// isNotNullableString
+type KeypairGetPublicKeyAttributeType = *string
+
+func getKeypairGetPublicKeyAttributeTypeOk(arg KeypairGetPublicKeyAttributeType) (ret KeypairGetPublicKeyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setKeypairGetPublicKeyAttributeType(arg *KeypairGetPublicKeyAttributeType, val KeypairGetPublicKeyRetType) {
+	*arg = &val
+}
+
+type KeypairGetPublicKeyArgType = string
+type KeypairGetPublicKeyRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type KeypairGetUpdatedAtAttributeType = *time.Time
+type KeypairGetUpdatedAtArgType = time.Time
+type KeypairGetUpdatedAtRetType = time.Time
+
+func getKeypairGetUpdatedAtAttributeTypeOk(arg KeypairGetUpdatedAtAttributeType) (ret KeypairGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setKeypairGetUpdatedAtAttributeType(arg *KeypairGetUpdatedAtAttributeType, val KeypairGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // Keypair Object that represents the public key of an SSH keypair and its name.
 type Keypair struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt KeypairGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Object that represents an SSH keypair MD5 fingerprint.
-	Fingerprint *string `json:"fingerprint,omitempty"`
+	Fingerprint KeypairGetFingerprintAttributeType `json:"fingerprint,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels KeypairGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name of an SSH keypair. Allowed characters are letters [a-zA-Z], digits [0-9] and the following special characters: [@._-].
-	Name *string `json:"name,omitempty"`
+	Name KeypairGetNameAttributeType `json:"name,omitempty"`
 	// Object that represents a public SSH key.
 	// REQUIRED
-	PublicKey *string `json:"publicKey"`
+	PublicKey KeypairGetPublicKeyAttributeType `json:"publicKey"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt KeypairGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _Keypair Keypair
@@ -41,9 +164,9 @@ type _Keypair Keypair
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewKeypair(publicKey *string) *Keypair {
+func NewKeypair(publicKey KeypairGetPublicKeyArgType) *Keypair {
 	this := Keypair{}
-	this.PublicKey = publicKey
+	setKeypairGetPublicKeyAttributeType(&this.PublicKey, publicKey)
 	return &this
 }
 
@@ -56,206 +179,156 @@ func NewKeypairWithDefaults() *Keypair {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Keypair) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Keypair) GetCreatedAt() (res KeypairGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Keypair) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Keypair) GetCreatedAtOk() (ret KeypairGetCreatedAtRetType, ok bool) {
+	return getKeypairGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Keypair) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Keypair) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Keypair) SetCreatedAt(v KeypairGetCreatedAtRetType) {
+	setKeypairGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetFingerprint returns the Fingerprint field value if set, zero value otherwise.
-func (o *Keypair) GetFingerprint() *string {
-	if o == nil || IsNil(o.Fingerprint) {
-		var ret *string
-		return ret
-	}
-	return o.Fingerprint
+func (o *Keypair) GetFingerprint() (res KeypairGetFingerprintRetType) {
+	res, _ = o.GetFingerprintOk()
+	return
 }
 
 // GetFingerprintOk returns a tuple with the Fingerprint field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Keypair) GetFingerprintOk() (*string, bool) {
-	if o == nil || IsNil(o.Fingerprint) {
-		return nil, false
-	}
-	return o.Fingerprint, true
+func (o *Keypair) GetFingerprintOk() (ret KeypairGetFingerprintRetType, ok bool) {
+	return getKeypairGetFingerprintAttributeTypeOk(o.Fingerprint)
 }
 
 // HasFingerprint returns a boolean if a field has been set.
 func (o *Keypair) HasFingerprint() bool {
-	if o != nil && !IsNil(o.Fingerprint) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetFingerprintOk()
+	return ok
 }
 
 // SetFingerprint gets a reference to the given string and assigns it to the Fingerprint field.
-func (o *Keypair) SetFingerprint(v *string) {
-	o.Fingerprint = v
+func (o *Keypair) SetFingerprint(v KeypairGetFingerprintRetType) {
+	setKeypairGetFingerprintAttributeType(&o.Fingerprint, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Keypair) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Keypair) GetLabels() (res KeypairGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Keypair) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Keypair) GetLabelsOk() (ret KeypairGetLabelsRetType, ok bool) {
+	return getKeypairGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Keypair) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Keypair) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Keypair) SetLabels(v KeypairGetLabelsRetType) {
+	setKeypairGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *Keypair) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *Keypair) GetName() (res KeypairGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Keypair) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Keypair) GetNameOk() (ret KeypairGetNameRetType, ok bool) {
+	return getKeypairGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *Keypair) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *Keypair) SetName(v *string) {
-	o.Name = v
+func (o *Keypair) SetName(v KeypairGetNameRetType) {
+	setKeypairGetNameAttributeType(&o.Name, v)
 }
 
 // GetPublicKey returns the PublicKey field value
-func (o *Keypair) GetPublicKey() *string {
-	if o == nil || IsNil(o.PublicKey) {
-		var ret *string
-		return ret
-	}
-
-	return o.PublicKey
+func (o *Keypair) GetPublicKey() (ret KeypairGetPublicKeyRetType) {
+	ret, _ = o.GetPublicKeyOk()
+	return ret
 }
 
 // GetPublicKeyOk returns a tuple with the PublicKey field value
 // and a boolean to check if the value has been set.
-func (o *Keypair) GetPublicKeyOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.PublicKey, true
+func (o *Keypair) GetPublicKeyOk() (ret KeypairGetPublicKeyRetType, ok bool) {
+	return getKeypairGetPublicKeyAttributeTypeOk(o.PublicKey)
 }
 
 // SetPublicKey sets field value
-func (o *Keypair) SetPublicKey(v *string) {
-	o.PublicKey = v
+func (o *Keypair) SetPublicKey(v KeypairGetPublicKeyRetType) {
+	setKeypairGetPublicKeyAttributeType(&o.PublicKey, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Keypair) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Keypair) GetUpdatedAt() (res KeypairGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Keypair) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Keypair) GetUpdatedAtOk() (ret KeypairGetUpdatedAtRetType, ok bool) {
+	return getKeypairGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Keypair) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Keypair) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Keypair) SetUpdatedAt(v KeypairGetUpdatedAtRetType) {
+	setKeypairGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o Keypair) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getKeypairGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getKeypairGetFingerprintAttributeTypeOk(o.Fingerprint); ok {
+		toSerialize["Fingerprint"] = val
 	}
-	if !IsNil(o.Fingerprint) {
-		toSerialize["fingerprint"] = o.Fingerprint
+	if val, ok := getKeypairGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getKeypairGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getKeypairGetPublicKeyAttributeTypeOk(o.PublicKey); ok {
+		toSerialize["PublicKey"] = val
 	}
-	toSerialize["publicKey"] = o.PublicKey
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getKeypairGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_machine_type.go b/services/iaas/model_machine_type.go
index 5bae7994a..fd11a832b 100644
--- a/services/iaas/model_machine_type.go
+++ b/services/iaas/model_machine_type.go
@@ -17,24 +17,146 @@ import (
 // checks if the MachineType type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &MachineType{}
 
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type MachineTypeGetDescriptionAttributeType = *string
+
+func getMachineTypeGetDescriptionAttributeTypeOk(arg MachineTypeGetDescriptionAttributeType) (ret MachineTypeGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setMachineTypeGetDescriptionAttributeType(arg *MachineTypeGetDescriptionAttributeType, val MachineTypeGetDescriptionRetType) {
+	*arg = &val
+}
+
+type MachineTypeGetDescriptionArgType = string
+type MachineTypeGetDescriptionRetType = string
+
+/*
+	types and functions for disk
+*/
+
+// isLong
+type MachineTypeGetDiskAttributeType = *int64
+type MachineTypeGetDiskArgType = int64
+type MachineTypeGetDiskRetType = int64
+
+func getMachineTypeGetDiskAttributeTypeOk(arg MachineTypeGetDiskAttributeType) (ret MachineTypeGetDiskRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setMachineTypeGetDiskAttributeType(arg *MachineTypeGetDiskAttributeType, val MachineTypeGetDiskRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for extraSpecs
+*/
+
+// isFreeform
+type MachineTypeGetExtraSpecsAttributeType = *map[string]interface{}
+type MachineTypeGetExtraSpecsArgType = map[string]interface{}
+type MachineTypeGetExtraSpecsRetType = map[string]interface{}
+
+func getMachineTypeGetExtraSpecsAttributeTypeOk(arg MachineTypeGetExtraSpecsAttributeType) (ret MachineTypeGetExtraSpecsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setMachineTypeGetExtraSpecsAttributeType(arg *MachineTypeGetExtraSpecsAttributeType, val MachineTypeGetExtraSpecsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type MachineTypeGetNameAttributeType = *string
+
+func getMachineTypeGetNameAttributeTypeOk(arg MachineTypeGetNameAttributeType) (ret MachineTypeGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setMachineTypeGetNameAttributeType(arg *MachineTypeGetNameAttributeType, val MachineTypeGetNameRetType) {
+	*arg = &val
+}
+
+type MachineTypeGetNameArgType = string
+type MachineTypeGetNameRetType = string
+
+/*
+	types and functions for ram
+*/
+
+// isLong
+type MachineTypeGetRamAttributeType = *int64
+type MachineTypeGetRamArgType = int64
+type MachineTypeGetRamRetType = int64
+
+func getMachineTypeGetRamAttributeTypeOk(arg MachineTypeGetRamAttributeType) (ret MachineTypeGetRamRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setMachineTypeGetRamAttributeType(arg *MachineTypeGetRamAttributeType, val MachineTypeGetRamRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for vcpus
+*/
+
+// isLong
+type MachineTypeGetVcpusAttributeType = *int64
+type MachineTypeGetVcpusArgType = int64
+type MachineTypeGetVcpusRetType = int64
+
+func getMachineTypeGetVcpusAttributeTypeOk(arg MachineTypeGetVcpusAttributeType) (ret MachineTypeGetVcpusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setMachineTypeGetVcpusAttributeType(arg *MachineTypeGetVcpusAttributeType, val MachineTypeGetVcpusRetType) {
+	*arg = &val
+}
+
 // MachineType Machine Type.
 type MachineType struct {
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description MachineTypeGetDescriptionAttributeType `json:"description,omitempty"`
 	// Size in Gigabyte.
 	// REQUIRED
-	Disk *int64 `json:"disk"`
+	Disk MachineTypeGetDiskAttributeType `json:"disk"`
 	// Properties to control certain aspects or scheduling behavior for an object.
-	ExtraSpecs *map[string]interface{} `json:"extraSpecs,omitempty"`
+	ExtraSpecs MachineTypeGetExtraSpecsAttributeType `json:"extraSpecs,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name MachineTypeGetNameAttributeType `json:"name"`
 	// Size in Megabyte.
 	// REQUIRED
-	Ram *int64 `json:"ram"`
+	Ram MachineTypeGetRamAttributeType `json:"ram"`
 	// The number of virtual CPUs of a server.
 	// REQUIRED
-	Vcpus *int64 `json:"vcpus"`
+	Vcpus MachineTypeGetVcpusAttributeType `json:"vcpus"`
 }
 
 type _MachineType MachineType
@@ -43,12 +165,12 @@ type _MachineType MachineType
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewMachineType(disk *int64, name *string, ram *int64, vcpus *int64) *MachineType {
+func NewMachineType(disk MachineTypeGetDiskArgType, name MachineTypeGetNameArgType, ram MachineTypeGetRamArgType, vcpus MachineTypeGetVcpusArgType) *MachineType {
 	this := MachineType{}
-	this.Disk = disk
-	this.Name = name
-	this.Ram = ram
-	this.Vcpus = vcpus
+	setMachineTypeGetDiskAttributeType(&this.Disk, disk)
+	setMachineTypeGetNameAttributeType(&this.Name, name)
+	setMachineTypeGetRamAttributeType(&this.Ram, ram)
+	setMachineTypeGetVcpusAttributeType(&this.Vcpus, vcpus)
 	return &this
 }
 
@@ -61,177 +183,139 @@ func NewMachineTypeWithDefaults() *MachineType {
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *MachineType) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *MachineType) GetDescription() (res MachineTypeGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *MachineType) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *MachineType) GetDescriptionOk() (ret MachineTypeGetDescriptionRetType, ok bool) {
+	return getMachineTypeGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *MachineType) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *MachineType) SetDescription(v *string) {
-	o.Description = v
+func (o *MachineType) SetDescription(v MachineTypeGetDescriptionRetType) {
+	setMachineTypeGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetDisk returns the Disk field value
-func (o *MachineType) GetDisk() *int64 {
-	if o == nil || IsNil(o.Disk) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Disk
+func (o *MachineType) GetDisk() (ret MachineTypeGetDiskRetType) {
+	ret, _ = o.GetDiskOk()
+	return ret
 }
 
 // GetDiskOk returns a tuple with the Disk field value
 // and a boolean to check if the value has been set.
-func (o *MachineType) GetDiskOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Disk, true
+func (o *MachineType) GetDiskOk() (ret MachineTypeGetDiskRetType, ok bool) {
+	return getMachineTypeGetDiskAttributeTypeOk(o.Disk)
 }
 
 // SetDisk sets field value
-func (o *MachineType) SetDisk(v *int64) {
-	o.Disk = v
+func (o *MachineType) SetDisk(v MachineTypeGetDiskRetType) {
+	setMachineTypeGetDiskAttributeType(&o.Disk, v)
 }
 
 // GetExtraSpecs returns the ExtraSpecs field value if set, zero value otherwise.
-func (o *MachineType) GetExtraSpecs() *map[string]interface{} {
-	if o == nil || IsNil(o.ExtraSpecs) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.ExtraSpecs
+func (o *MachineType) GetExtraSpecs() (res MachineTypeGetExtraSpecsRetType) {
+	res, _ = o.GetExtraSpecsOk()
+	return
 }
 
 // GetExtraSpecsOk returns a tuple with the ExtraSpecs field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *MachineType) GetExtraSpecsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.ExtraSpecs) {
-		return &map[string]interface{}{}, false
-	}
-	return o.ExtraSpecs, true
+func (o *MachineType) GetExtraSpecsOk() (ret MachineTypeGetExtraSpecsRetType, ok bool) {
+	return getMachineTypeGetExtraSpecsAttributeTypeOk(o.ExtraSpecs)
 }
 
 // HasExtraSpecs returns a boolean if a field has been set.
 func (o *MachineType) HasExtraSpecs() bool {
-	if o != nil && !IsNil(o.ExtraSpecs) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetExtraSpecsOk()
+	return ok
 }
 
 // SetExtraSpecs gets a reference to the given map[string]interface{} and assigns it to the ExtraSpecs field.
-func (o *MachineType) SetExtraSpecs(v *map[string]interface{}) {
-	o.ExtraSpecs = v
+func (o *MachineType) SetExtraSpecs(v MachineTypeGetExtraSpecsRetType) {
+	setMachineTypeGetExtraSpecsAttributeType(&o.ExtraSpecs, v)
 }
 
 // GetName returns the Name field value
-func (o *MachineType) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *MachineType) GetName() (ret MachineTypeGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *MachineType) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *MachineType) GetNameOk() (ret MachineTypeGetNameRetType, ok bool) {
+	return getMachineTypeGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *MachineType) SetName(v *string) {
-	o.Name = v
+func (o *MachineType) SetName(v MachineTypeGetNameRetType) {
+	setMachineTypeGetNameAttributeType(&o.Name, v)
 }
 
 // GetRam returns the Ram field value
-func (o *MachineType) GetRam() *int64 {
-	if o == nil || IsNil(o.Ram) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Ram
+func (o *MachineType) GetRam() (ret MachineTypeGetRamRetType) {
+	ret, _ = o.GetRamOk()
+	return ret
 }
 
 // GetRamOk returns a tuple with the Ram field value
 // and a boolean to check if the value has been set.
-func (o *MachineType) GetRamOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Ram, true
+func (o *MachineType) GetRamOk() (ret MachineTypeGetRamRetType, ok bool) {
+	return getMachineTypeGetRamAttributeTypeOk(o.Ram)
 }
 
 // SetRam sets field value
-func (o *MachineType) SetRam(v *int64) {
-	o.Ram = v
+func (o *MachineType) SetRam(v MachineTypeGetRamRetType) {
+	setMachineTypeGetRamAttributeType(&o.Ram, v)
 }
 
 // GetVcpus returns the Vcpus field value
-func (o *MachineType) GetVcpus() *int64 {
-	if o == nil || IsNil(o.Vcpus) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Vcpus
+func (o *MachineType) GetVcpus() (ret MachineTypeGetVcpusRetType) {
+	ret, _ = o.GetVcpusOk()
+	return ret
 }
 
 // GetVcpusOk returns a tuple with the Vcpus field value
 // and a boolean to check if the value has been set.
-func (o *MachineType) GetVcpusOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Vcpus, true
+func (o *MachineType) GetVcpusOk() (ret MachineTypeGetVcpusRetType, ok bool) {
+	return getMachineTypeGetVcpusAttributeTypeOk(o.Vcpus)
 }
 
 // SetVcpus sets field value
-func (o *MachineType) SetVcpus(v *int64) {
-	o.Vcpus = v
+func (o *MachineType) SetVcpus(v MachineTypeGetVcpusRetType) {
+	setMachineTypeGetVcpusAttributeType(&o.Vcpus, v)
 }
 
 func (o MachineType) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getMachineTypeGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
+	}
+	if val, ok := getMachineTypeGetDiskAttributeTypeOk(o.Disk); ok {
+		toSerialize["Disk"] = val
+	}
+	if val, ok := getMachineTypeGetExtraSpecsAttributeTypeOk(o.ExtraSpecs); ok {
+		toSerialize["ExtraSpecs"] = val
+	}
+	if val, ok := getMachineTypeGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
+	}
+	if val, ok := getMachineTypeGetRamAttributeTypeOk(o.Ram); ok {
+		toSerialize["Ram"] = val
 	}
-	toSerialize["disk"] = o.Disk
-	if !IsNil(o.ExtraSpecs) {
-		toSerialize["extraSpecs"] = o.ExtraSpecs
+	if val, ok := getMachineTypeGetVcpusAttributeTypeOk(o.Vcpus); ok {
+		toSerialize["Vcpus"] = val
 	}
-	toSerialize["name"] = o.Name
-	toSerialize["ram"] = o.Ram
-	toSerialize["vcpus"] = o.Vcpus
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_machine_type_list_response.go b/services/iaas/model_machine_type_list_response.go
index 4fda880d5..162a09635 100644
--- a/services/iaas/model_machine_type_list_response.go
+++ b/services/iaas/model_machine_type_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the MachineTypeListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &MachineTypeListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type MachineTypeListResponseGetItemsAttributeType = *[]MachineType
+type MachineTypeListResponseGetItemsArgType = []MachineType
+type MachineTypeListResponseGetItemsRetType = []MachineType
+
+func getMachineTypeListResponseGetItemsAttributeTypeOk(arg MachineTypeListResponseGetItemsAttributeType) (ret MachineTypeListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setMachineTypeListResponseGetItemsAttributeType(arg *MachineTypeListResponseGetItemsAttributeType, val MachineTypeListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // MachineTypeListResponse Machine type list response.
 type MachineTypeListResponse struct {
 	// Machine type list.
 	// REQUIRED
-	Items *[]MachineType `json:"items"`
+	Items MachineTypeListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _MachineTypeListResponse MachineTypeListResponse
@@ -30,9 +50,9 @@ type _MachineTypeListResponse MachineTypeListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewMachineTypeListResponse(items *[]MachineType) *MachineTypeListResponse {
+func NewMachineTypeListResponse(items MachineTypeListResponseGetItemsArgType) *MachineTypeListResponse {
 	this := MachineTypeListResponse{}
-	this.Items = items
+	setMachineTypeListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewMachineTypeListResponseWithDefaults() *MachineTypeListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *MachineTypeListResponse) GetItems() *[]MachineType {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]MachineType
-		return ret
-	}
-
-	return o.Items
+func (o *MachineTypeListResponse) GetItems() (ret MachineTypeListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *MachineTypeListResponse) GetItemsOk() (*[]MachineType, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *MachineTypeListResponse) GetItemsOk() (ret MachineTypeListResponseGetItemsRetType, ok bool) {
+	return getMachineTypeListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *MachineTypeListResponse) SetItems(v *[]MachineType) {
-	o.Items = v
+func (o *MachineTypeListResponse) SetItems(v MachineTypeListResponseGetItemsRetType) {
+	setMachineTypeListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o MachineTypeListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getMachineTypeListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_network.go b/services/iaas/model_network.go
index e14f60faf..cbd710359 100644
--- a/services/iaas/model_network.go
+++ b/services/iaas/model_network.go
@@ -18,36 +18,330 @@ import (
 // checks if the Network type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Network{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type NetworkGetCreatedAtAttributeType = *time.Time
+type NetworkGetCreatedAtArgType = time.Time
+type NetworkGetCreatedAtRetType = time.Time
+
+func getNetworkGetCreatedAtAttributeTypeOk(arg NetworkGetCreatedAtAttributeType) (ret NetworkGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetCreatedAtAttributeType(arg *NetworkGetCreatedAtAttributeType, val NetworkGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for gateway
+*/
+
+// isNullableString
+type NetworkGetGatewayAttributeType = *NullableString
+
+func getNetworkGetGatewayAttributeTypeOk(arg NetworkGetGatewayAttributeType) (ret NetworkGetGatewayRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setNetworkGetGatewayAttributeType(arg *NetworkGetGatewayAttributeType, val NetworkGetGatewayRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type NetworkGetGatewayArgType = *string
+type NetworkGetGatewayRetType = *string
+
+/*
+	types and functions for gatewayv6
+*/
+
+// isNullableString
+type NetworkGetGatewayv6AttributeType = *NullableString
+
+func getNetworkGetGatewayv6AttributeTypeOk(arg NetworkGetGatewayv6AttributeType) (ret NetworkGetGatewayv6RetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setNetworkGetGatewayv6AttributeType(arg *NetworkGetGatewayv6AttributeType, val NetworkGetGatewayv6RetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type NetworkGetGatewayv6ArgType = *string
+type NetworkGetGatewayv6RetType = *string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type NetworkGetLabelsAttributeType = *map[string]interface{}
+type NetworkGetLabelsArgType = map[string]interface{}
+type NetworkGetLabelsRetType = map[string]interface{}
+
+func getNetworkGetLabelsAttributeTypeOk(arg NetworkGetLabelsAttributeType) (ret NetworkGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetLabelsAttributeType(arg *NetworkGetLabelsAttributeType, val NetworkGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type NetworkGetNameAttributeType = *string
+
+func getNetworkGetNameAttributeTypeOk(arg NetworkGetNameAttributeType) (ret NetworkGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetNameAttributeType(arg *NetworkGetNameAttributeType, val NetworkGetNameRetType) {
+	*arg = &val
+}
+
+type NetworkGetNameArgType = string
+type NetworkGetNameRetType = string
+
+/*
+	types and functions for nameservers
+*/
+
+// isArray
+type NetworkGetNameserversAttributeType = *[]string
+type NetworkGetNameserversArgType = []string
+type NetworkGetNameserversRetType = []string
+
+func getNetworkGetNameserversAttributeTypeOk(arg NetworkGetNameserversAttributeType) (ret NetworkGetNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetNameserversAttributeType(arg *NetworkGetNameserversAttributeType, val NetworkGetNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for nameserversV6
+*/
+
+// isArray
+type NetworkGetNameserversV6AttributeType = *[]string
+type NetworkGetNameserversV6ArgType = []string
+type NetworkGetNameserversV6RetType = []string
+
+func getNetworkGetNameserversV6AttributeTypeOk(arg NetworkGetNameserversV6AttributeType) (ret NetworkGetNameserversV6RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetNameserversV6AttributeType(arg *NetworkGetNameserversV6AttributeType, val NetworkGetNameserversV6RetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkId
+*/
+
+// isNotNullableString
+type NetworkGetNetworkIdAttributeType = *string
+
+func getNetworkGetNetworkIdAttributeTypeOk(arg NetworkGetNetworkIdAttributeType) (ret NetworkGetNetworkIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetNetworkIdAttributeType(arg *NetworkGetNetworkIdAttributeType, val NetworkGetNetworkIdRetType) {
+	*arg = &val
+}
+
+type NetworkGetNetworkIdArgType = string
+type NetworkGetNetworkIdRetType = string
+
+/*
+	types and functions for prefixes
+*/
+
+// isArray
+type NetworkGetPrefixesAttributeType = *[]string
+type NetworkGetPrefixesArgType = []string
+type NetworkGetPrefixesRetType = []string
+
+func getNetworkGetPrefixesAttributeTypeOk(arg NetworkGetPrefixesAttributeType) (ret NetworkGetPrefixesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetPrefixesAttributeType(arg *NetworkGetPrefixesAttributeType, val NetworkGetPrefixesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for prefixesV6
+*/
+
+// isArray
+type NetworkGetPrefixesV6AttributeType = *[]string
+type NetworkGetPrefixesV6ArgType = []string
+type NetworkGetPrefixesV6RetType = []string
+
+func getNetworkGetPrefixesV6AttributeTypeOk(arg NetworkGetPrefixesV6AttributeType) (ret NetworkGetPrefixesV6RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetPrefixesV6AttributeType(arg *NetworkGetPrefixesV6AttributeType, val NetworkGetPrefixesV6RetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for publicIp
+*/
+
+// isNotNullableString
+type NetworkGetPublicIpAttributeType = *string
+
+func getNetworkGetPublicIpAttributeTypeOk(arg NetworkGetPublicIpAttributeType) (ret NetworkGetPublicIpRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetPublicIpAttributeType(arg *NetworkGetPublicIpAttributeType, val NetworkGetPublicIpRetType) {
+	*arg = &val
+}
+
+type NetworkGetPublicIpArgType = string
+type NetworkGetPublicIpRetType = string
+
+/*
+	types and functions for routed
+*/
+
+// isBoolean
+type NetworkgetRoutedAttributeType = *bool
+type NetworkgetRoutedArgType = bool
+type NetworkgetRoutedRetType = bool
+
+func getNetworkgetRoutedAttributeTypeOk(arg NetworkgetRoutedAttributeType) (ret NetworkgetRoutedRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkgetRoutedAttributeType(arg *NetworkgetRoutedAttributeType, val NetworkgetRoutedRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for state
+*/
+
+// isNotNullableString
+type NetworkGetStateAttributeType = *string
+
+func getNetworkGetStateAttributeTypeOk(arg NetworkGetStateAttributeType) (ret NetworkGetStateRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetStateAttributeType(arg *NetworkGetStateAttributeType, val NetworkGetStateRetType) {
+	*arg = &val
+}
+
+type NetworkGetStateArgType = string
+type NetworkGetStateRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type NetworkGetUpdatedAtAttributeType = *time.Time
+type NetworkGetUpdatedAtArgType = time.Time
+type NetworkGetUpdatedAtRetType = time.Time
+
+func getNetworkGetUpdatedAtAttributeTypeOk(arg NetworkGetUpdatedAtAttributeType) (ret NetworkGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkGetUpdatedAtAttributeType(arg *NetworkGetUpdatedAtAttributeType, val NetworkGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // Network Object that represents a network.
 type Network struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt NetworkGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// The gateway of a network. If not specified the first IP of the network will be assigned as the gateway. If 'null' is sent, then the network doesn't have a gateway.
-	Gateway *NullableString `json:"gateway,omitempty"`
+	Gateway NetworkGetGatewayAttributeType `json:"gateway,omitempty"`
 	// The gateway of a network. If not specified the first IP of the network will be assigned as the gateway. If 'null' is sent, then the network doesn't have a gateway.
-	Gatewayv6 *NullableString `json:"gatewayv6,omitempty"`
+	Gatewayv6 NetworkGetGatewayv6AttributeType `json:"gatewayv6,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels NetworkGetLabelsAttributeType `json:"labels,omitempty"`
 	// REQUIRED
-	Name *string `json:"name"`
+	Name NetworkGetNameAttributeType `json:"name"`
 	// A list containing DNS Servers/Nameservers for IPv4.
-	Nameservers *[]string `json:"nameservers,omitempty"`
+	Nameservers NetworkGetNameserversAttributeType `json:"nameservers,omitempty"`
 	// A list containing DNS Servers/Nameservers for IPv6.
-	NameserversV6 *[]string `json:"nameserversV6,omitempty"`
+	NameserversV6 NetworkGetNameserversV6AttributeType `json:"nameserversV6,omitempty"`
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	NetworkId  *string   `json:"networkId"`
-	Prefixes   *[]string `json:"prefixes,omitempty"`
-	PrefixesV6 *[]string `json:"prefixesV6,omitempty"`
+	NetworkId  NetworkGetNetworkIdAttributeType  `json:"networkId"`
+	Prefixes   NetworkGetPrefixesAttributeType   `json:"prefixes,omitempty"`
+	PrefixesV6 NetworkGetPrefixesV6AttributeType `json:"prefixesV6,omitempty"`
 	// Object that represents an IP address.
-	PublicIp *string `json:"publicIp,omitempty"`
+	PublicIp NetworkGetPublicIpAttributeType `json:"publicIp,omitempty"`
 	// Shows if the network is routed and therefore accessible from other networks.
-	Routed *bool `json:"routed,omitempty"`
+	Routed NetworkgetRoutedAttributeType `json:"routed,omitempty"`
 	// The state of a resource object. Possible values: `CREATING`, `CREATED`, `DELETING`, `DELETED`, `FAILED`, `UPDATED`, `UPDATING`.
 	// REQUIRED
-	State *string `json:"state"`
+	State NetworkGetStateAttributeType `json:"state"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt NetworkGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _Network Network
@@ -56,11 +350,11 @@ type _Network Network
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewNetwork(name *string, networkId *string, state *string) *Network {
+func NewNetwork(name NetworkGetNameArgType, networkId NetworkGetNetworkIdArgType, state NetworkGetStateArgType) *Network {
 	this := Network{}
-	this.Name = name
-	this.NetworkId = networkId
-	this.State = state
+	setNetworkGetNameAttributeType(&this.Name, name)
+	setNetworkGetNetworkIdAttributeType(&this.NetworkId, networkId)
+	setNetworkGetStateAttributeType(&this.State, state)
 	return &this
 }
 
@@ -73,506 +367,374 @@ func NewNetworkWithDefaults() *Network {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Network) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Network) GetCreatedAt() (res NetworkGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Network) GetCreatedAtOk() (ret NetworkGetCreatedAtRetType, ok bool) {
+	return getNetworkGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Network) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Network) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Network) SetCreatedAt(v NetworkGetCreatedAtRetType) {
+	setNetworkGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetGateway returns the Gateway field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *Network) GetGateway() *string {
-	if o == nil || IsNil(o.Gateway) || IsNil(o.Gateway.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.Gateway.Get()
+func (o *Network) GetGateway() (res NetworkGetGatewayRetType) {
+	res, _ = o.GetGatewayOk()
+	return
 }
 
 // GetGatewayOk returns a tuple with the Gateway field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *Network) GetGatewayOk() (*string, bool) {
-	if o == nil || IsNil(o.Gateway) {
-		return nil, false
-	}
-	return o.Gateway.Get(), o.Gateway.IsSet()
+func (o *Network) GetGatewayOk() (ret NetworkGetGatewayRetType, ok bool) {
+	return getNetworkGetGatewayAttributeTypeOk(o.Gateway)
 }
 
 // HasGateway returns a boolean if a field has been set.
 func (o *Network) HasGateway() bool {
-	if o != nil && !IsNil(o.Gateway) && o.Gateway.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetGatewayOk()
+	return ok
 }
 
 // SetGateway gets a reference to the given string and assigns it to the Gateway field.
-func (o *Network) SetGateway(v *string) {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(v)
+func (o *Network) SetGateway(v NetworkGetGatewayRetType) {
+	setNetworkGetGatewayAttributeType(&o.Gateway, v)
 }
 
 // SetGatewayNil sets the value for Gateway to be an explicit nil
 func (o *Network) SetGatewayNil() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(nil)
+	o.Gateway = nil
 }
 
 // UnsetGateway ensures that no value is present for Gateway, not even an explicit nil
 func (o *Network) UnsetGateway() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Unset()
+	o.Gateway = nil
 }
 
 // GetGatewayv6 returns the Gatewayv6 field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *Network) GetGatewayv6() *string {
-	if o == nil || IsNil(o.Gatewayv6) || IsNil(o.Gatewayv6.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.Gatewayv6.Get()
+func (o *Network) GetGatewayv6() (res NetworkGetGatewayv6RetType) {
+	res, _ = o.GetGatewayv6Ok()
+	return
 }
 
 // GetGatewayv6Ok returns a tuple with the Gatewayv6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *Network) GetGatewayv6Ok() (*string, bool) {
-	if o == nil || IsNil(o.Gatewayv6) {
-		return nil, false
-	}
-	return o.Gatewayv6.Get(), o.Gatewayv6.IsSet()
+func (o *Network) GetGatewayv6Ok() (ret NetworkGetGatewayv6RetType, ok bool) {
+	return getNetworkGetGatewayv6AttributeTypeOk(o.Gatewayv6)
 }
 
 // HasGatewayv6 returns a boolean if a field has been set.
 func (o *Network) HasGatewayv6() bool {
-	if o != nil && !IsNil(o.Gatewayv6) && o.Gatewayv6.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetGatewayv6Ok()
+	return ok
 }
 
 // SetGatewayv6 gets a reference to the given string and assigns it to the Gatewayv6 field.
-func (o *Network) SetGatewayv6(v *string) {
-	if IsNil(o.Gatewayv6) {
-		o.Gatewayv6 = new(NullableString)
-	}
-	o.Gatewayv6.Set(v)
+func (o *Network) SetGatewayv6(v NetworkGetGatewayv6RetType) {
+	setNetworkGetGatewayv6AttributeType(&o.Gatewayv6, v)
 }
 
 // SetGatewayv6Nil sets the value for Gatewayv6 to be an explicit nil
 func (o *Network) SetGatewayv6Nil() {
-	if IsNil(o.Gatewayv6) {
-		o.Gatewayv6 = new(NullableString)
-	}
-	o.Gatewayv6.Set(nil)
+	o.Gatewayv6 = nil
 }
 
 // UnsetGatewayv6 ensures that no value is present for Gatewayv6, not even an explicit nil
 func (o *Network) UnsetGatewayv6() {
-	if IsNil(o.Gatewayv6) {
-		o.Gatewayv6 = new(NullableString)
-	}
-	o.Gatewayv6.Unset()
+	o.Gatewayv6 = nil
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Network) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Network) GetLabels() (res NetworkGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Network) GetLabelsOk() (ret NetworkGetLabelsRetType, ok bool) {
+	return getNetworkGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Network) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Network) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Network) SetLabels(v NetworkGetLabelsRetType) {
+	setNetworkGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value
-func (o *Network) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *Network) GetName() (ret NetworkGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *Network) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Network) GetNameOk() (ret NetworkGetNameRetType, ok bool) {
+	return getNetworkGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *Network) SetName(v *string) {
-	o.Name = v
+func (o *Network) SetName(v NetworkGetNameRetType) {
+	setNetworkGetNameAttributeType(&o.Name, v)
 }
 
 // GetNameservers returns the Nameservers field value if set, zero value otherwise.
-func (o *Network) GetNameservers() *[]string {
-	if o == nil || IsNil(o.Nameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.Nameservers
+func (o *Network) GetNameservers() (res NetworkGetNameserversRetType) {
+	res, _ = o.GetNameserversOk()
+	return
 }
 
 // GetNameserversOk returns a tuple with the Nameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Nameservers) {
-		return nil, false
-	}
-	return o.Nameservers, true
+func (o *Network) GetNameserversOk() (ret NetworkGetNameserversRetType, ok bool) {
+	return getNetworkGetNameserversAttributeTypeOk(o.Nameservers)
 }
 
 // HasNameservers returns a boolean if a field has been set.
 func (o *Network) HasNameservers() bool {
-	if o != nil && !IsNil(o.Nameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameserversOk()
+	return ok
 }
 
 // SetNameservers gets a reference to the given []string and assigns it to the Nameservers field.
-func (o *Network) SetNameservers(v *[]string) {
-	o.Nameservers = v
+func (o *Network) SetNameservers(v NetworkGetNameserversRetType) {
+	setNetworkGetNameserversAttributeType(&o.Nameservers, v)
 }
 
 // GetNameserversV6 returns the NameserversV6 field value if set, zero value otherwise.
-func (o *Network) GetNameserversV6() *[]string {
-	if o == nil || IsNil(o.NameserversV6) {
-		var ret *[]string
-		return ret
-	}
-	return o.NameserversV6
+func (o *Network) GetNameserversV6() (res NetworkGetNameserversV6RetType) {
+	res, _ = o.GetNameserversV6Ok()
+	return
 }
 
 // GetNameserversV6Ok returns a tuple with the NameserversV6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetNameserversV6Ok() (*[]string, bool) {
-	if o == nil || IsNil(o.NameserversV6) {
-		return nil, false
-	}
-	return o.NameserversV6, true
+func (o *Network) GetNameserversV6Ok() (ret NetworkGetNameserversV6RetType, ok bool) {
+	return getNetworkGetNameserversV6AttributeTypeOk(o.NameserversV6)
 }
 
 // HasNameserversV6 returns a boolean if a field has been set.
 func (o *Network) HasNameserversV6() bool {
-	if o != nil && !IsNil(o.NameserversV6) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameserversV6Ok()
+	return ok
 }
 
 // SetNameserversV6 gets a reference to the given []string and assigns it to the NameserversV6 field.
-func (o *Network) SetNameserversV6(v *[]string) {
-	o.NameserversV6 = v
+func (o *Network) SetNameserversV6(v NetworkGetNameserversV6RetType) {
+	setNetworkGetNameserversV6AttributeType(&o.NameserversV6, v)
 }
 
 // GetNetworkId returns the NetworkId field value
-func (o *Network) GetNetworkId() *string {
-	if o == nil || IsNil(o.NetworkId) {
-		var ret *string
-		return ret
-	}
-
-	return o.NetworkId
+func (o *Network) GetNetworkId() (ret NetworkGetNetworkIdRetType) {
+	ret, _ = o.GetNetworkIdOk()
+	return ret
 }
 
 // GetNetworkIdOk returns a tuple with the NetworkId field value
 // and a boolean to check if the value has been set.
-func (o *Network) GetNetworkIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.NetworkId, true
+func (o *Network) GetNetworkIdOk() (ret NetworkGetNetworkIdRetType, ok bool) {
+	return getNetworkGetNetworkIdAttributeTypeOk(o.NetworkId)
 }
 
 // SetNetworkId sets field value
-func (o *Network) SetNetworkId(v *string) {
-	o.NetworkId = v
+func (o *Network) SetNetworkId(v NetworkGetNetworkIdRetType) {
+	setNetworkGetNetworkIdAttributeType(&o.NetworkId, v)
 }
 
 // GetPrefixes returns the Prefixes field value if set, zero value otherwise.
-func (o *Network) GetPrefixes() *[]string {
-	if o == nil || IsNil(o.Prefixes) {
-		var ret *[]string
-		return ret
-	}
-	return o.Prefixes
+func (o *Network) GetPrefixes() (res NetworkGetPrefixesRetType) {
+	res, _ = o.GetPrefixesOk()
+	return
 }
 
 // GetPrefixesOk returns a tuple with the Prefixes field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetPrefixesOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Prefixes) {
-		return nil, false
-	}
-	return o.Prefixes, true
+func (o *Network) GetPrefixesOk() (ret NetworkGetPrefixesRetType, ok bool) {
+	return getNetworkGetPrefixesAttributeTypeOk(o.Prefixes)
 }
 
 // HasPrefixes returns a boolean if a field has been set.
 func (o *Network) HasPrefixes() bool {
-	if o != nil && !IsNil(o.Prefixes) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPrefixesOk()
+	return ok
 }
 
 // SetPrefixes gets a reference to the given []string and assigns it to the Prefixes field.
-func (o *Network) SetPrefixes(v *[]string) {
-	o.Prefixes = v
+func (o *Network) SetPrefixes(v NetworkGetPrefixesRetType) {
+	setNetworkGetPrefixesAttributeType(&o.Prefixes, v)
 }
 
 // GetPrefixesV6 returns the PrefixesV6 field value if set, zero value otherwise.
-func (o *Network) GetPrefixesV6() *[]string {
-	if o == nil || IsNil(o.PrefixesV6) {
-		var ret *[]string
-		return ret
-	}
-	return o.PrefixesV6
+func (o *Network) GetPrefixesV6() (res NetworkGetPrefixesV6RetType) {
+	res, _ = o.GetPrefixesV6Ok()
+	return
 }
 
 // GetPrefixesV6Ok returns a tuple with the PrefixesV6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetPrefixesV6Ok() (*[]string, bool) {
-	if o == nil || IsNil(o.PrefixesV6) {
-		return nil, false
-	}
-	return o.PrefixesV6, true
+func (o *Network) GetPrefixesV6Ok() (ret NetworkGetPrefixesV6RetType, ok bool) {
+	return getNetworkGetPrefixesV6AttributeTypeOk(o.PrefixesV6)
 }
 
 // HasPrefixesV6 returns a boolean if a field has been set.
 func (o *Network) HasPrefixesV6() bool {
-	if o != nil && !IsNil(o.PrefixesV6) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPrefixesV6Ok()
+	return ok
 }
 
 // SetPrefixesV6 gets a reference to the given []string and assigns it to the PrefixesV6 field.
-func (o *Network) SetPrefixesV6(v *[]string) {
-	o.PrefixesV6 = v
+func (o *Network) SetPrefixesV6(v NetworkGetPrefixesV6RetType) {
+	setNetworkGetPrefixesV6AttributeType(&o.PrefixesV6, v)
 }
 
 // GetPublicIp returns the PublicIp field value if set, zero value otherwise.
-func (o *Network) GetPublicIp() *string {
-	if o == nil || IsNil(o.PublicIp) {
-		var ret *string
-		return ret
-	}
-	return o.PublicIp
+func (o *Network) GetPublicIp() (res NetworkGetPublicIpRetType) {
+	res, _ = o.GetPublicIpOk()
+	return
 }
 
 // GetPublicIpOk returns a tuple with the PublicIp field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetPublicIpOk() (*string, bool) {
-	if o == nil || IsNil(o.PublicIp) {
-		return nil, false
-	}
-	return o.PublicIp, true
+func (o *Network) GetPublicIpOk() (ret NetworkGetPublicIpRetType, ok bool) {
+	return getNetworkGetPublicIpAttributeTypeOk(o.PublicIp)
 }
 
 // HasPublicIp returns a boolean if a field has been set.
 func (o *Network) HasPublicIp() bool {
-	if o != nil && !IsNil(o.PublicIp) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPublicIpOk()
+	return ok
 }
 
 // SetPublicIp gets a reference to the given string and assigns it to the PublicIp field.
-func (o *Network) SetPublicIp(v *string) {
-	o.PublicIp = v
+func (o *Network) SetPublicIp(v NetworkGetPublicIpRetType) {
+	setNetworkGetPublicIpAttributeType(&o.PublicIp, v)
 }
 
 // GetRouted returns the Routed field value if set, zero value otherwise.
-func (o *Network) GetRouted() *bool {
-	if o == nil || IsNil(o.Routed) {
-		var ret *bool
-		return ret
-	}
-	return o.Routed
+func (o *Network) GetRouted() (res NetworkgetRoutedRetType) {
+	res, _ = o.GetRoutedOk()
+	return
 }
 
 // GetRoutedOk returns a tuple with the Routed field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetRoutedOk() (*bool, bool) {
-	if o == nil || IsNil(o.Routed) {
-		return nil, false
-	}
-	return o.Routed, true
+func (o *Network) GetRoutedOk() (ret NetworkgetRoutedRetType, ok bool) {
+	return getNetworkgetRoutedAttributeTypeOk(o.Routed)
 }
 
 // HasRouted returns a boolean if a field has been set.
 func (o *Network) HasRouted() bool {
-	if o != nil && !IsNil(o.Routed) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRoutedOk()
+	return ok
 }
 
 // SetRouted gets a reference to the given bool and assigns it to the Routed field.
-func (o *Network) SetRouted(v *bool) {
-	o.Routed = v
+func (o *Network) SetRouted(v NetworkgetRoutedRetType) {
+	setNetworkgetRoutedAttributeType(&o.Routed, v)
 }
 
 // GetState returns the State field value
-func (o *Network) GetState() *string {
-	if o == nil || IsNil(o.State) {
-		var ret *string
-		return ret
-	}
-
-	return o.State
+func (o *Network) GetState() (ret NetworkGetStateRetType) {
+	ret, _ = o.GetStateOk()
+	return ret
 }
 
 // GetStateOk returns a tuple with the State field value
 // and a boolean to check if the value has been set.
-func (o *Network) GetStateOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.State, true
+func (o *Network) GetStateOk() (ret NetworkGetStateRetType, ok bool) {
+	return getNetworkGetStateAttributeTypeOk(o.State)
 }
 
 // SetState sets field value
-func (o *Network) SetState(v *string) {
-	o.State = v
+func (o *Network) SetState(v NetworkGetStateRetType) {
+	setNetworkGetStateAttributeType(&o.State, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Network) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Network) GetUpdatedAt() (res NetworkGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Network) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Network) GetUpdatedAtOk() (ret NetworkGetUpdatedAtRetType, ok bool) {
+	return getNetworkGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Network) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Network) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Network) SetUpdatedAt(v NetworkGetUpdatedAtRetType) {
+	setNetworkGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o Network) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getNetworkGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getNetworkGetGatewayAttributeTypeOk(o.Gateway); ok {
+		toSerialize["Gateway"] = val
+	}
+	if val, ok := getNetworkGetGatewayv6AttributeTypeOk(o.Gatewayv6); ok {
+		toSerialize["Gatewayv6"] = val
+	}
+	if val, ok := getNetworkGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if o.Gateway.IsSet() {
-		toSerialize["gateway"] = o.Gateway.Get()
+	if val, ok := getNetworkGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if o.Gatewayv6.IsSet() {
-		toSerialize["gatewayv6"] = o.Gatewayv6.Get()
+	if val, ok := getNetworkGetNameserversAttributeTypeOk(o.Nameservers); ok {
+		toSerialize["Nameservers"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getNetworkGetNameserversV6AttributeTypeOk(o.NameserversV6); ok {
+		toSerialize["NameserversV6"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Nameservers) {
-		toSerialize["nameservers"] = o.Nameservers
+	if val, ok := getNetworkGetNetworkIdAttributeTypeOk(o.NetworkId); ok {
+		toSerialize["NetworkId"] = val
 	}
-	if !IsNil(o.NameserversV6) {
-		toSerialize["nameserversV6"] = o.NameserversV6
+	if val, ok := getNetworkGetPrefixesAttributeTypeOk(o.Prefixes); ok {
+		toSerialize["Prefixes"] = val
 	}
-	toSerialize["networkId"] = o.NetworkId
-	if !IsNil(o.Prefixes) {
-		toSerialize["prefixes"] = o.Prefixes
+	if val, ok := getNetworkGetPrefixesV6AttributeTypeOk(o.PrefixesV6); ok {
+		toSerialize["PrefixesV6"] = val
 	}
-	if !IsNil(o.PrefixesV6) {
-		toSerialize["prefixesV6"] = o.PrefixesV6
+	if val, ok := getNetworkGetPublicIpAttributeTypeOk(o.PublicIp); ok {
+		toSerialize["PublicIp"] = val
 	}
-	if !IsNil(o.PublicIp) {
-		toSerialize["publicIp"] = o.PublicIp
+	if val, ok := getNetworkgetRoutedAttributeTypeOk(o.Routed); ok {
+		toSerialize["Routed"] = val
 	}
-	if !IsNil(o.Routed) {
-		toSerialize["routed"] = o.Routed
+	if val, ok := getNetworkGetStateAttributeTypeOk(o.State); ok {
+		toSerialize["State"] = val
 	}
-	toSerialize["state"] = o.State
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getNetworkGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_network_area.go b/services/iaas/model_network_area.go
index 143638e62..f72299e4c 100644
--- a/services/iaas/model_network_area.go
+++ b/services/iaas/model_network_area.go
@@ -18,26 +18,189 @@ import (
 // checks if the NetworkArea type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NetworkArea{}
 
+/*
+	types and functions for areaId
+*/
+
+// isNotNullableString
+type NetworkAreaGetAreaIdAttributeType = *string
+
+func getNetworkAreaGetAreaIdAttributeTypeOk(arg NetworkAreaGetAreaIdAttributeType) (ret NetworkAreaGetAreaIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetAreaIdAttributeType(arg *NetworkAreaGetAreaIdAttributeType, val NetworkAreaGetAreaIdRetType) {
+	*arg = &val
+}
+
+type NetworkAreaGetAreaIdArgType = string
+type NetworkAreaGetAreaIdRetType = string
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type NetworkAreaGetCreatedAtAttributeType = *time.Time
+type NetworkAreaGetCreatedAtArgType = time.Time
+type NetworkAreaGetCreatedAtRetType = time.Time
+
+func getNetworkAreaGetCreatedAtAttributeTypeOk(arg NetworkAreaGetCreatedAtAttributeType) (ret NetworkAreaGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetCreatedAtAttributeType(arg *NetworkAreaGetCreatedAtAttributeType, val NetworkAreaGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for ipv4
+*/
+
+// isModel
+type NetworkAreaGetIpv4AttributeType = *NetworkAreaIPv4
+type NetworkAreaGetIpv4ArgType = NetworkAreaIPv4
+type NetworkAreaGetIpv4RetType = NetworkAreaIPv4
+
+func getNetworkAreaGetIpv4AttributeTypeOk(arg NetworkAreaGetIpv4AttributeType) (ret NetworkAreaGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetIpv4AttributeType(arg *NetworkAreaGetIpv4AttributeType, val NetworkAreaGetIpv4RetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type NetworkAreaGetLabelsAttributeType = *map[string]interface{}
+type NetworkAreaGetLabelsArgType = map[string]interface{}
+type NetworkAreaGetLabelsRetType = map[string]interface{}
+
+func getNetworkAreaGetLabelsAttributeTypeOk(arg NetworkAreaGetLabelsAttributeType) (ret NetworkAreaGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetLabelsAttributeType(arg *NetworkAreaGetLabelsAttributeType, val NetworkAreaGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type NetworkAreaGetNameAttributeType = *string
+
+func getNetworkAreaGetNameAttributeTypeOk(arg NetworkAreaGetNameAttributeType) (ret NetworkAreaGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetNameAttributeType(arg *NetworkAreaGetNameAttributeType, val NetworkAreaGetNameRetType) {
+	*arg = &val
+}
+
+type NetworkAreaGetNameArgType = string
+type NetworkAreaGetNameRetType = string
+
+/*
+	types and functions for projectCount
+*/
+
+// isLong
+type NetworkAreaGetProjectCountAttributeType = *int64
+type NetworkAreaGetProjectCountArgType = int64
+type NetworkAreaGetProjectCountRetType = int64
+
+func getNetworkAreaGetProjectCountAttributeTypeOk(arg NetworkAreaGetProjectCountAttributeType) (ret NetworkAreaGetProjectCountRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetProjectCountAttributeType(arg *NetworkAreaGetProjectCountAttributeType, val NetworkAreaGetProjectCountRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for state
+*/
+
+// isNotNullableString
+type NetworkAreaGetStateAttributeType = *string
+
+func getNetworkAreaGetStateAttributeTypeOk(arg NetworkAreaGetStateAttributeType) (ret NetworkAreaGetStateRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetStateAttributeType(arg *NetworkAreaGetStateAttributeType, val NetworkAreaGetStateRetType) {
+	*arg = &val
+}
+
+type NetworkAreaGetStateArgType = string
+type NetworkAreaGetStateRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type NetworkAreaGetUpdatedAtAttributeType = *time.Time
+type NetworkAreaGetUpdatedAtArgType = time.Time
+type NetworkAreaGetUpdatedAtRetType = time.Time
+
+func getNetworkAreaGetUpdatedAtAttributeTypeOk(arg NetworkAreaGetUpdatedAtAttributeType) (ret NetworkAreaGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaGetUpdatedAtAttributeType(arg *NetworkAreaGetUpdatedAtAttributeType, val NetworkAreaGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // NetworkArea Object that represents a network area.
 type NetworkArea struct {
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	AreaId *string `json:"areaId"`
+	AreaId NetworkAreaGetAreaIdAttributeType `json:"areaId"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time       `json:"createdAt,omitempty"`
-	Ipv4      *NetworkAreaIPv4 `json:"ipv4,omitempty"`
+	CreatedAt NetworkAreaGetCreatedAtAttributeType `json:"createdAt,omitempty"`
+	Ipv4      NetworkAreaGetIpv4AttributeType      `json:"ipv4,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels NetworkAreaGetLabelsAttributeType `json:"labels,omitempty"`
 	// REQUIRED
-	Name *string `json:"name"`
+	Name NetworkAreaGetNameAttributeType `json:"name"`
 	// The amount of projects currently referencing a specific area.
 	// REQUIRED
-	ProjectCount *int64 `json:"projectCount"`
+	ProjectCount NetworkAreaGetProjectCountAttributeType `json:"projectCount"`
 	// The state of a resource object. Possible values: `CREATING`, `CREATED`, `DELETING`, `DELETED`, `FAILED`, `UPDATED`, `UPDATING`.
 	// REQUIRED
-	State *string `json:"state"`
+	State NetworkAreaGetStateAttributeType `json:"state"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt NetworkAreaGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _NetworkArea NetworkArea
@@ -46,12 +209,12 @@ type _NetworkArea NetworkArea
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewNetworkArea(areaId *string, name *string, projectCount *int64, state *string) *NetworkArea {
+func NewNetworkArea(areaId NetworkAreaGetAreaIdArgType, name NetworkAreaGetNameArgType, projectCount NetworkAreaGetProjectCountArgType, state NetworkAreaGetStateArgType) *NetworkArea {
 	this := NetworkArea{}
-	this.AreaId = areaId
-	this.Name = name
-	this.ProjectCount = projectCount
-	this.State = state
+	setNetworkAreaGetAreaIdAttributeType(&this.AreaId, areaId)
+	setNetworkAreaGetNameAttributeType(&this.Name, name)
+	setNetworkAreaGetProjectCountAttributeType(&this.ProjectCount, projectCount)
+	setNetworkAreaGetStateAttributeType(&this.State, state)
 	return &this
 }
 
@@ -64,246 +227,190 @@ func NewNetworkAreaWithDefaults() *NetworkArea {
 }
 
 // GetAreaId returns the AreaId field value
-func (o *NetworkArea) GetAreaId() *string {
-	if o == nil || IsNil(o.AreaId) {
-		var ret *string
-		return ret
-	}
-
-	return o.AreaId
+func (o *NetworkArea) GetAreaId() (ret NetworkAreaGetAreaIdRetType) {
+	ret, _ = o.GetAreaIdOk()
+	return ret
 }
 
 // GetAreaIdOk returns a tuple with the AreaId field value
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetAreaIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.AreaId, true
+func (o *NetworkArea) GetAreaIdOk() (ret NetworkAreaGetAreaIdRetType, ok bool) {
+	return getNetworkAreaGetAreaIdAttributeTypeOk(o.AreaId)
 }
 
 // SetAreaId sets field value
-func (o *NetworkArea) SetAreaId(v *string) {
-	o.AreaId = v
+func (o *NetworkArea) SetAreaId(v NetworkAreaGetAreaIdRetType) {
+	setNetworkAreaGetAreaIdAttributeType(&o.AreaId, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *NetworkArea) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *NetworkArea) GetCreatedAt() (res NetworkAreaGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *NetworkArea) GetCreatedAtOk() (ret NetworkAreaGetCreatedAtRetType, ok bool) {
+	return getNetworkAreaGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *NetworkArea) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *NetworkArea) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *NetworkArea) SetCreatedAt(v NetworkAreaGetCreatedAtRetType) {
+	setNetworkAreaGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *NetworkArea) GetIpv4() *NetworkAreaIPv4 {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *NetworkAreaIPv4
-		return ret
-	}
-	return o.Ipv4
+func (o *NetworkArea) GetIpv4() (res NetworkAreaGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetIpv4Ok() (*NetworkAreaIPv4, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *NetworkArea) GetIpv4Ok() (ret NetworkAreaGetIpv4RetType, ok bool) {
+	return getNetworkAreaGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *NetworkArea) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given NetworkAreaIPv4 and assigns it to the Ipv4 field.
-func (o *NetworkArea) SetIpv4(v *NetworkAreaIPv4) {
-	o.Ipv4 = v
+func (o *NetworkArea) SetIpv4(v NetworkAreaGetIpv4RetType) {
+	setNetworkAreaGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *NetworkArea) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *NetworkArea) GetLabels() (res NetworkAreaGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *NetworkArea) GetLabelsOk() (ret NetworkAreaGetLabelsRetType, ok bool) {
+	return getNetworkAreaGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *NetworkArea) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *NetworkArea) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *NetworkArea) SetLabels(v NetworkAreaGetLabelsRetType) {
+	setNetworkAreaGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value
-func (o *NetworkArea) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *NetworkArea) GetName() (ret NetworkAreaGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *NetworkArea) GetNameOk() (ret NetworkAreaGetNameRetType, ok bool) {
+	return getNetworkAreaGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *NetworkArea) SetName(v *string) {
-	o.Name = v
+func (o *NetworkArea) SetName(v NetworkAreaGetNameRetType) {
+	setNetworkAreaGetNameAttributeType(&o.Name, v)
 }
 
 // GetProjectCount returns the ProjectCount field value
-func (o *NetworkArea) GetProjectCount() *int64 {
-	if o == nil || IsNil(o.ProjectCount) {
-		var ret *int64
-		return ret
-	}
-
-	return o.ProjectCount
+func (o *NetworkArea) GetProjectCount() (ret NetworkAreaGetProjectCountRetType) {
+	ret, _ = o.GetProjectCountOk()
+	return ret
 }
 
 // GetProjectCountOk returns a tuple with the ProjectCount field value
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetProjectCountOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.ProjectCount, true
+func (o *NetworkArea) GetProjectCountOk() (ret NetworkAreaGetProjectCountRetType, ok bool) {
+	return getNetworkAreaGetProjectCountAttributeTypeOk(o.ProjectCount)
 }
 
 // SetProjectCount sets field value
-func (o *NetworkArea) SetProjectCount(v *int64) {
-	o.ProjectCount = v
+func (o *NetworkArea) SetProjectCount(v NetworkAreaGetProjectCountRetType) {
+	setNetworkAreaGetProjectCountAttributeType(&o.ProjectCount, v)
 }
 
 // GetState returns the State field value
-func (o *NetworkArea) GetState() *string {
-	if o == nil || IsNil(o.State) {
-		var ret *string
-		return ret
-	}
-
-	return o.State
+func (o *NetworkArea) GetState() (ret NetworkAreaGetStateRetType) {
+	ret, _ = o.GetStateOk()
+	return ret
 }
 
 // GetStateOk returns a tuple with the State field value
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetStateOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.State, true
+func (o *NetworkArea) GetStateOk() (ret NetworkAreaGetStateRetType, ok bool) {
+	return getNetworkAreaGetStateAttributeTypeOk(o.State)
 }
 
 // SetState sets field value
-func (o *NetworkArea) SetState(v *string) {
-	o.State = v
+func (o *NetworkArea) SetState(v NetworkAreaGetStateRetType) {
+	setNetworkAreaGetStateAttributeType(&o.State, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *NetworkArea) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *NetworkArea) GetUpdatedAt() (res NetworkAreaGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkArea) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *NetworkArea) GetUpdatedAtOk() (ret NetworkAreaGetUpdatedAtRetType, ok bool) {
+	return getNetworkAreaGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *NetworkArea) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *NetworkArea) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *NetworkArea) SetUpdatedAt(v NetworkAreaGetUpdatedAtRetType) {
+	setNetworkAreaGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o NetworkArea) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["areaId"] = o.AreaId
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getNetworkAreaGetAreaIdAttributeTypeOk(o.AreaId); ok {
+		toSerialize["AreaId"] = val
+	}
+	if val, ok := getNetworkAreaGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getNetworkAreaGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
+	}
+	if val, ok := getNetworkAreaGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
+	}
+	if val, ok := getNetworkAreaGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getNetworkAreaGetProjectCountAttributeTypeOk(o.ProjectCount); ok {
+		toSerialize["ProjectCount"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getNetworkAreaGetStateAttributeTypeOk(o.State); ok {
+		toSerialize["State"] = val
 	}
-	toSerialize["name"] = o.Name
-	toSerialize["projectCount"] = o.ProjectCount
-	toSerialize["state"] = o.State
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getNetworkAreaGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_network_area_ipv4.go b/services/iaas/model_network_area_ipv4.go
index 7e7358d56..dfb5495b5 100644
--- a/services/iaas/model_network_area_ipv4.go
+++ b/services/iaas/model_network_area_ipv4.go
@@ -17,22 +17,163 @@ import (
 // checks if the NetworkAreaIPv4 type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NetworkAreaIPv4{}
 
+/*
+	types and functions for defaultNameservers
+*/
+
+// isArray
+type NetworkAreaIPv4GetDefaultNameserversAttributeType = *[]string
+type NetworkAreaIPv4GetDefaultNameserversArgType = []string
+type NetworkAreaIPv4GetDefaultNameserversRetType = []string
+
+func getNetworkAreaIPv4GetDefaultNameserversAttributeTypeOk(arg NetworkAreaIPv4GetDefaultNameserversAttributeType) (ret NetworkAreaIPv4GetDefaultNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaIPv4GetDefaultNameserversAttributeType(arg *NetworkAreaIPv4GetDefaultNameserversAttributeType, val NetworkAreaIPv4GetDefaultNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkRanges
+*/
+
+// isArray
+type NetworkAreaIPv4GetNetworkRangesAttributeType = *[]NetworkRange
+type NetworkAreaIPv4GetNetworkRangesArgType = []NetworkRange
+type NetworkAreaIPv4GetNetworkRangesRetType = []NetworkRange
+
+func getNetworkAreaIPv4GetNetworkRangesAttributeTypeOk(arg NetworkAreaIPv4GetNetworkRangesAttributeType) (ret NetworkAreaIPv4GetNetworkRangesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaIPv4GetNetworkRangesAttributeType(arg *NetworkAreaIPv4GetNetworkRangesAttributeType, val NetworkAreaIPv4GetNetworkRangesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for routes
+*/
+
+// isArray
+type NetworkAreaIPv4GetRoutesAttributeType = *[]Route
+type NetworkAreaIPv4GetRoutesArgType = []Route
+type NetworkAreaIPv4GetRoutesRetType = []Route
+
+func getNetworkAreaIPv4GetRoutesAttributeTypeOk(arg NetworkAreaIPv4GetRoutesAttributeType) (ret NetworkAreaIPv4GetRoutesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaIPv4GetRoutesAttributeType(arg *NetworkAreaIPv4GetRoutesAttributeType, val NetworkAreaIPv4GetRoutesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for transferNetwork
+*/
+
+// isNotNullableString
+type NetworkAreaIPv4GetTransferNetworkAttributeType = *string
+
+func getNetworkAreaIPv4GetTransferNetworkAttributeTypeOk(arg NetworkAreaIPv4GetTransferNetworkAttributeType) (ret NetworkAreaIPv4GetTransferNetworkRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaIPv4GetTransferNetworkAttributeType(arg *NetworkAreaIPv4GetTransferNetworkAttributeType, val NetworkAreaIPv4GetTransferNetworkRetType) {
+	*arg = &val
+}
+
+type NetworkAreaIPv4GetTransferNetworkArgType = string
+type NetworkAreaIPv4GetTransferNetworkRetType = string
+
+/*
+	types and functions for defaultPrefixLen
+*/
+
+// isInteger
+type NetworkAreaIPv4GetDefaultPrefixLenAttributeType = *int64
+type NetworkAreaIPv4GetDefaultPrefixLenArgType = int64
+type NetworkAreaIPv4GetDefaultPrefixLenRetType = int64
+
+func getNetworkAreaIPv4GetDefaultPrefixLenAttributeTypeOk(arg NetworkAreaIPv4GetDefaultPrefixLenAttributeType) (ret NetworkAreaIPv4GetDefaultPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaIPv4GetDefaultPrefixLenAttributeType(arg *NetworkAreaIPv4GetDefaultPrefixLenAttributeType, val NetworkAreaIPv4GetDefaultPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for maxPrefixLen
+*/
+
+// isInteger
+type NetworkAreaIPv4GetMaxPrefixLenAttributeType = *int64
+type NetworkAreaIPv4GetMaxPrefixLenArgType = int64
+type NetworkAreaIPv4GetMaxPrefixLenRetType = int64
+
+func getNetworkAreaIPv4GetMaxPrefixLenAttributeTypeOk(arg NetworkAreaIPv4GetMaxPrefixLenAttributeType) (ret NetworkAreaIPv4GetMaxPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaIPv4GetMaxPrefixLenAttributeType(arg *NetworkAreaIPv4GetMaxPrefixLenAttributeType, val NetworkAreaIPv4GetMaxPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minPrefixLen
+*/
+
+// isInteger
+type NetworkAreaIPv4GetMinPrefixLenAttributeType = *int64
+type NetworkAreaIPv4GetMinPrefixLenArgType = int64
+type NetworkAreaIPv4GetMinPrefixLenRetType = int64
+
+func getNetworkAreaIPv4GetMinPrefixLenAttributeTypeOk(arg NetworkAreaIPv4GetMinPrefixLenAttributeType) (ret NetworkAreaIPv4GetMinPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaIPv4GetMinPrefixLenAttributeType(arg *NetworkAreaIPv4GetMinPrefixLenAttributeType, val NetworkAreaIPv4GetMinPrefixLenRetType) {
+	*arg = &val
+}
+
 // NetworkAreaIPv4 The IPv4 properties of a network area.
 type NetworkAreaIPv4 struct {
 	// A list containing DNS Servers/Nameservers for IPv4.
-	DefaultNameservers *[]string `json:"defaultNameservers,omitempty"`
+	DefaultNameservers NetworkAreaIPv4GetDefaultNameserversAttributeType `json:"defaultNameservers,omitempty"`
 	// A list of network ranges.
-	NetworkRanges *[]NetworkRange `json:"networkRanges,omitempty"`
+	NetworkRanges NetworkAreaIPv4GetNetworkRangesAttributeType `json:"networkRanges,omitempty"`
 	// A list of routes.
-	Routes *[]Route `json:"routes,omitempty"`
+	Routes NetworkAreaIPv4GetRoutesAttributeType `json:"routes,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
-	TransferNetwork *string `json:"transferNetwork,omitempty"`
+	TransferNetwork NetworkAreaIPv4GetTransferNetworkAttributeType `json:"transferNetwork,omitempty"`
 	// The default prefix length for networks in the network area.
-	DefaultPrefixLen *int64 `json:"defaultPrefixLen,omitempty"`
+	DefaultPrefixLen NetworkAreaIPv4GetDefaultPrefixLenAttributeType `json:"defaultPrefixLen,omitempty"`
 	// The maximal prefix length for networks in the network area.
-	MaxPrefixLen *int64 `json:"maxPrefixLen,omitempty"`
+	MaxPrefixLen NetworkAreaIPv4GetMaxPrefixLenAttributeType `json:"maxPrefixLen,omitempty"`
 	// The minimal prefix length for networks in the network area.
-	MinPrefixLen *int64 `json:"minPrefixLen,omitempty"`
+	MinPrefixLen NetworkAreaIPv4GetMinPrefixLenAttributeType `json:"minPrefixLen,omitempty"`
 }
 
 // NewNetworkAreaIPv4 instantiates a new NetworkAreaIPv4 object
@@ -41,12 +182,6 @@ type NetworkAreaIPv4 struct {
 // will change when the set of required properties is changed
 func NewNetworkAreaIPv4() *NetworkAreaIPv4 {
 	this := NetworkAreaIPv4{}
-	var defaultPrefixLen int64 = 25
-	this.DefaultPrefixLen = &defaultPrefixLen
-	var maxPrefixLen int64 = 29
-	this.MaxPrefixLen = &maxPrefixLen
-	var minPrefixLen int64 = 24
-	this.MinPrefixLen = &minPrefixLen
 	return &this
 }
 
@@ -65,251 +200,188 @@ func NewNetworkAreaIPv4WithDefaults() *NetworkAreaIPv4 {
 }
 
 // GetDefaultNameservers returns the DefaultNameservers field value if set, zero value otherwise.
-func (o *NetworkAreaIPv4) GetDefaultNameservers() *[]string {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.DefaultNameservers
+func (o *NetworkAreaIPv4) GetDefaultNameservers() (res NetworkAreaIPv4GetDefaultNameserversRetType) {
+	res, _ = o.GetDefaultNameserversOk()
+	return
 }
 
 // GetDefaultNameserversOk returns a tuple with the DefaultNameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaIPv4) GetDefaultNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		return nil, false
-	}
-	return o.DefaultNameservers, true
+func (o *NetworkAreaIPv4) GetDefaultNameserversOk() (ret NetworkAreaIPv4GetDefaultNameserversRetType, ok bool) {
+	return getNetworkAreaIPv4GetDefaultNameserversAttributeTypeOk(o.DefaultNameservers)
 }
 
 // HasDefaultNameservers returns a boolean if a field has been set.
 func (o *NetworkAreaIPv4) HasDefaultNameservers() bool {
-	if o != nil && !IsNil(o.DefaultNameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultNameserversOk()
+	return ok
 }
 
 // SetDefaultNameservers gets a reference to the given []string and assigns it to the DefaultNameservers field.
-func (o *NetworkAreaIPv4) SetDefaultNameservers(v *[]string) {
-	o.DefaultNameservers = v
+func (o *NetworkAreaIPv4) SetDefaultNameservers(v NetworkAreaIPv4GetDefaultNameserversRetType) {
+	setNetworkAreaIPv4GetDefaultNameserversAttributeType(&o.DefaultNameservers, v)
 }
 
 // GetNetworkRanges returns the NetworkRanges field value if set, zero value otherwise.
-func (o *NetworkAreaIPv4) GetNetworkRanges() *[]NetworkRange {
-	if o == nil || IsNil(o.NetworkRanges) {
-		var ret *[]NetworkRange
-		return ret
-	}
-	return o.NetworkRanges
+func (o *NetworkAreaIPv4) GetNetworkRanges() (res NetworkAreaIPv4GetNetworkRangesRetType) {
+	res, _ = o.GetNetworkRangesOk()
+	return
 }
 
 // GetNetworkRangesOk returns a tuple with the NetworkRanges field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaIPv4) GetNetworkRangesOk() (*[]NetworkRange, bool) {
-	if o == nil || IsNil(o.NetworkRanges) {
-		return nil, false
-	}
-	return o.NetworkRanges, true
+func (o *NetworkAreaIPv4) GetNetworkRangesOk() (ret NetworkAreaIPv4GetNetworkRangesRetType, ok bool) {
+	return getNetworkAreaIPv4GetNetworkRangesAttributeTypeOk(o.NetworkRanges)
 }
 
 // HasNetworkRanges returns a boolean if a field has been set.
 func (o *NetworkAreaIPv4) HasNetworkRanges() bool {
-	if o != nil && !IsNil(o.NetworkRanges) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkRangesOk()
+	return ok
 }
 
 // SetNetworkRanges gets a reference to the given []NetworkRange and assigns it to the NetworkRanges field.
-func (o *NetworkAreaIPv4) SetNetworkRanges(v *[]NetworkRange) {
-	o.NetworkRanges = v
+func (o *NetworkAreaIPv4) SetNetworkRanges(v NetworkAreaIPv4GetNetworkRangesRetType) {
+	setNetworkAreaIPv4GetNetworkRangesAttributeType(&o.NetworkRanges, v)
 }
 
 // GetRoutes returns the Routes field value if set, zero value otherwise.
-func (o *NetworkAreaIPv4) GetRoutes() *[]Route {
-	if o == nil || IsNil(o.Routes) {
-		var ret *[]Route
-		return ret
-	}
-	return o.Routes
+func (o *NetworkAreaIPv4) GetRoutes() (res NetworkAreaIPv4GetRoutesRetType) {
+	res, _ = o.GetRoutesOk()
+	return
 }
 
 // GetRoutesOk returns a tuple with the Routes field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaIPv4) GetRoutesOk() (*[]Route, bool) {
-	if o == nil || IsNil(o.Routes) {
-		return nil, false
-	}
-	return o.Routes, true
+func (o *NetworkAreaIPv4) GetRoutesOk() (ret NetworkAreaIPv4GetRoutesRetType, ok bool) {
+	return getNetworkAreaIPv4GetRoutesAttributeTypeOk(o.Routes)
 }
 
 // HasRoutes returns a boolean if a field has been set.
 func (o *NetworkAreaIPv4) HasRoutes() bool {
-	if o != nil && !IsNil(o.Routes) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRoutesOk()
+	return ok
 }
 
 // SetRoutes gets a reference to the given []Route and assigns it to the Routes field.
-func (o *NetworkAreaIPv4) SetRoutes(v *[]Route) {
-	o.Routes = v
+func (o *NetworkAreaIPv4) SetRoutes(v NetworkAreaIPv4GetRoutesRetType) {
+	setNetworkAreaIPv4GetRoutesAttributeType(&o.Routes, v)
 }
 
 // GetTransferNetwork returns the TransferNetwork field value if set, zero value otherwise.
-func (o *NetworkAreaIPv4) GetTransferNetwork() *string {
-	if o == nil || IsNil(o.TransferNetwork) {
-		var ret *string
-		return ret
-	}
-	return o.TransferNetwork
+func (o *NetworkAreaIPv4) GetTransferNetwork() (res NetworkAreaIPv4GetTransferNetworkRetType) {
+	res, _ = o.GetTransferNetworkOk()
+	return
 }
 
 // GetTransferNetworkOk returns a tuple with the TransferNetwork field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaIPv4) GetTransferNetworkOk() (*string, bool) {
-	if o == nil || IsNil(o.TransferNetwork) {
-		return nil, false
-	}
-	return o.TransferNetwork, true
+func (o *NetworkAreaIPv4) GetTransferNetworkOk() (ret NetworkAreaIPv4GetTransferNetworkRetType, ok bool) {
+	return getNetworkAreaIPv4GetTransferNetworkAttributeTypeOk(o.TransferNetwork)
 }
 
 // HasTransferNetwork returns a boolean if a field has been set.
 func (o *NetworkAreaIPv4) HasTransferNetwork() bool {
-	if o != nil && !IsNil(o.TransferNetwork) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetTransferNetworkOk()
+	return ok
 }
 
 // SetTransferNetwork gets a reference to the given string and assigns it to the TransferNetwork field.
-func (o *NetworkAreaIPv4) SetTransferNetwork(v *string) {
-	o.TransferNetwork = v
+func (o *NetworkAreaIPv4) SetTransferNetwork(v NetworkAreaIPv4GetTransferNetworkRetType) {
+	setNetworkAreaIPv4GetTransferNetworkAttributeType(&o.TransferNetwork, v)
 }
 
 // GetDefaultPrefixLen returns the DefaultPrefixLen field value if set, zero value otherwise.
-func (o *NetworkAreaIPv4) GetDefaultPrefixLen() *int64 {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.DefaultPrefixLen
+func (o *NetworkAreaIPv4) GetDefaultPrefixLen() (res NetworkAreaIPv4GetDefaultPrefixLenRetType) {
+	res, _ = o.GetDefaultPrefixLenOk()
+	return
 }
 
 // GetDefaultPrefixLenOk returns a tuple with the DefaultPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaIPv4) GetDefaultPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		return nil, false
-	}
-	return o.DefaultPrefixLen, true
+func (o *NetworkAreaIPv4) GetDefaultPrefixLenOk() (ret NetworkAreaIPv4GetDefaultPrefixLenRetType, ok bool) {
+	return getNetworkAreaIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen)
 }
 
 // HasDefaultPrefixLen returns a boolean if a field has been set.
 func (o *NetworkAreaIPv4) HasDefaultPrefixLen() bool {
-	if o != nil && !IsNil(o.DefaultPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultPrefixLenOk()
+	return ok
 }
 
 // SetDefaultPrefixLen gets a reference to the given int64 and assigns it to the DefaultPrefixLen field.
-func (o *NetworkAreaIPv4) SetDefaultPrefixLen(v *int64) {
-	o.DefaultPrefixLen = v
+func (o *NetworkAreaIPv4) SetDefaultPrefixLen(v NetworkAreaIPv4GetDefaultPrefixLenRetType) {
+	setNetworkAreaIPv4GetDefaultPrefixLenAttributeType(&o.DefaultPrefixLen, v)
 }
 
 // GetMaxPrefixLen returns the MaxPrefixLen field value if set, zero value otherwise.
-func (o *NetworkAreaIPv4) GetMaxPrefixLen() *int64 {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MaxPrefixLen
+func (o *NetworkAreaIPv4) GetMaxPrefixLen() (res NetworkAreaIPv4GetMaxPrefixLenRetType) {
+	res, _ = o.GetMaxPrefixLenOk()
+	return
 }
 
 // GetMaxPrefixLenOk returns a tuple with the MaxPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaIPv4) GetMaxPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		return nil, false
-	}
-	return o.MaxPrefixLen, true
+func (o *NetworkAreaIPv4) GetMaxPrefixLenOk() (ret NetworkAreaIPv4GetMaxPrefixLenRetType, ok bool) {
+	return getNetworkAreaIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen)
 }
 
 // HasMaxPrefixLen returns a boolean if a field has been set.
 func (o *NetworkAreaIPv4) HasMaxPrefixLen() bool {
-	if o != nil && !IsNil(o.MaxPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMaxPrefixLenOk()
+	return ok
 }
 
 // SetMaxPrefixLen gets a reference to the given int64 and assigns it to the MaxPrefixLen field.
-func (o *NetworkAreaIPv4) SetMaxPrefixLen(v *int64) {
-	o.MaxPrefixLen = v
+func (o *NetworkAreaIPv4) SetMaxPrefixLen(v NetworkAreaIPv4GetMaxPrefixLenRetType) {
+	setNetworkAreaIPv4GetMaxPrefixLenAttributeType(&o.MaxPrefixLen, v)
 }
 
 // GetMinPrefixLen returns the MinPrefixLen field value if set, zero value otherwise.
-func (o *NetworkAreaIPv4) GetMinPrefixLen() *int64 {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MinPrefixLen
+func (o *NetworkAreaIPv4) GetMinPrefixLen() (res NetworkAreaIPv4GetMinPrefixLenRetType) {
+	res, _ = o.GetMinPrefixLenOk()
+	return
 }
 
 // GetMinPrefixLenOk returns a tuple with the MinPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaIPv4) GetMinPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		return nil, false
-	}
-	return o.MinPrefixLen, true
+func (o *NetworkAreaIPv4) GetMinPrefixLenOk() (ret NetworkAreaIPv4GetMinPrefixLenRetType, ok bool) {
+	return getNetworkAreaIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen)
 }
 
 // HasMinPrefixLen returns a boolean if a field has been set.
 func (o *NetworkAreaIPv4) HasMinPrefixLen() bool {
-	if o != nil && !IsNil(o.MinPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinPrefixLenOk()
+	return ok
 }
 
 // SetMinPrefixLen gets a reference to the given int64 and assigns it to the MinPrefixLen field.
-func (o *NetworkAreaIPv4) SetMinPrefixLen(v *int64) {
-	o.MinPrefixLen = v
+func (o *NetworkAreaIPv4) SetMinPrefixLen(v NetworkAreaIPv4GetMinPrefixLenRetType) {
+	setNetworkAreaIPv4GetMinPrefixLenAttributeType(&o.MinPrefixLen, v)
 }
 
 func (o NetworkAreaIPv4) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DefaultNameservers) {
-		toSerialize["defaultNameservers"] = o.DefaultNameservers
+	if val, ok := getNetworkAreaIPv4GetDefaultNameserversAttributeTypeOk(o.DefaultNameservers); ok {
+		toSerialize["DefaultNameservers"] = val
 	}
-	if !IsNil(o.NetworkRanges) {
-		toSerialize["networkRanges"] = o.NetworkRanges
+	if val, ok := getNetworkAreaIPv4GetNetworkRangesAttributeTypeOk(o.NetworkRanges); ok {
+		toSerialize["NetworkRanges"] = val
 	}
-	if !IsNil(o.Routes) {
-		toSerialize["routes"] = o.Routes
+	if val, ok := getNetworkAreaIPv4GetRoutesAttributeTypeOk(o.Routes); ok {
+		toSerialize["Routes"] = val
 	}
-	if !IsNil(o.TransferNetwork) {
-		toSerialize["transferNetwork"] = o.TransferNetwork
+	if val, ok := getNetworkAreaIPv4GetTransferNetworkAttributeTypeOk(o.TransferNetwork); ok {
+		toSerialize["TransferNetwork"] = val
 	}
-	if !IsNil(o.DefaultPrefixLen) {
-		toSerialize["defaultPrefixLen"] = o.DefaultPrefixLen
+	if val, ok := getNetworkAreaIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen); ok {
+		toSerialize["DefaultPrefixLen"] = val
 	}
-	if !IsNil(o.MaxPrefixLen) {
-		toSerialize["maxPrefixLen"] = o.MaxPrefixLen
+	if val, ok := getNetworkAreaIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen); ok {
+		toSerialize["MaxPrefixLen"] = val
 	}
-	if !IsNil(o.MinPrefixLen) {
-		toSerialize["minPrefixLen"] = o.MinPrefixLen
+	if val, ok := getNetworkAreaIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen); ok {
+		toSerialize["MinPrefixLen"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_network_area_list_response.go b/services/iaas/model_network_area_list_response.go
index 9478ec961..040bd780c 100644
--- a/services/iaas/model_network_area_list_response.go
+++ b/services/iaas/model_network_area_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the NetworkAreaListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NetworkAreaListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type NetworkAreaListResponseGetItemsAttributeType = *[]NetworkArea
+type NetworkAreaListResponseGetItemsArgType = []NetworkArea
+type NetworkAreaListResponseGetItemsRetType = []NetworkArea
+
+func getNetworkAreaListResponseGetItemsAttributeTypeOk(arg NetworkAreaListResponseGetItemsAttributeType) (ret NetworkAreaListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkAreaListResponseGetItemsAttributeType(arg *NetworkAreaListResponseGetItemsAttributeType, val NetworkAreaListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // NetworkAreaListResponse Network area list response.
 type NetworkAreaListResponse struct {
 	// A list of network areas.
 	// REQUIRED
-	Items *[]NetworkArea `json:"items"`
+	Items NetworkAreaListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _NetworkAreaListResponse NetworkAreaListResponse
@@ -30,9 +50,9 @@ type _NetworkAreaListResponse NetworkAreaListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewNetworkAreaListResponse(items *[]NetworkArea) *NetworkAreaListResponse {
+func NewNetworkAreaListResponse(items NetworkAreaListResponseGetItemsArgType) *NetworkAreaListResponse {
 	this := NetworkAreaListResponse{}
-	this.Items = items
+	setNetworkAreaListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewNetworkAreaListResponseWithDefaults() *NetworkAreaListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *NetworkAreaListResponse) GetItems() *[]NetworkArea {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]NetworkArea
-		return ret
-	}
-
-	return o.Items
+func (o *NetworkAreaListResponse) GetItems() (ret NetworkAreaListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *NetworkAreaListResponse) GetItemsOk() (*[]NetworkArea, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *NetworkAreaListResponse) GetItemsOk() (ret NetworkAreaListResponseGetItemsRetType, ok bool) {
+	return getNetworkAreaListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *NetworkAreaListResponse) SetItems(v *[]NetworkArea) {
-	o.Items = v
+func (o *NetworkAreaListResponse) SetItems(v NetworkAreaListResponseGetItemsRetType) {
+	setNetworkAreaListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o NetworkAreaListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getNetworkAreaListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_network_list_response.go b/services/iaas/model_network_list_response.go
index 66ef63df1..3fade9994 100644
--- a/services/iaas/model_network_list_response.go
+++ b/services/iaas/model_network_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the NetworkListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NetworkListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type NetworkListResponseGetItemsAttributeType = *[]Network
+type NetworkListResponseGetItemsArgType = []Network
+type NetworkListResponseGetItemsRetType = []Network
+
+func getNetworkListResponseGetItemsAttributeTypeOk(arg NetworkListResponseGetItemsAttributeType) (ret NetworkListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkListResponseGetItemsAttributeType(arg *NetworkListResponseGetItemsAttributeType, val NetworkListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // NetworkListResponse Network list response.
 type NetworkListResponse struct {
 	// A list of networks.
 	// REQUIRED
-	Items *[]Network `json:"items"`
+	Items NetworkListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _NetworkListResponse NetworkListResponse
@@ -30,9 +50,9 @@ type _NetworkListResponse NetworkListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewNetworkListResponse(items *[]Network) *NetworkListResponse {
+func NewNetworkListResponse(items NetworkListResponseGetItemsArgType) *NetworkListResponse {
 	this := NetworkListResponse{}
-	this.Items = items
+	setNetworkListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewNetworkListResponseWithDefaults() *NetworkListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *NetworkListResponse) GetItems() *[]Network {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Network
-		return ret
-	}
-
-	return o.Items
+func (o *NetworkListResponse) GetItems() (ret NetworkListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *NetworkListResponse) GetItemsOk() (*[]Network, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *NetworkListResponse) GetItemsOk() (ret NetworkListResponseGetItemsRetType, ok bool) {
+	return getNetworkListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *NetworkListResponse) SetItems(v *[]Network) {
-	o.Items = v
+func (o *NetworkListResponse) SetItems(v NetworkListResponseGetItemsRetType) {
+	setNetworkListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o NetworkListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getNetworkListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_network_range.go b/services/iaas/model_network_range.go
index 6b9b9a031..f2575aed9 100644
--- a/services/iaas/model_network_range.go
+++ b/services/iaas/model_network_range.go
@@ -18,17 +18,99 @@ import (
 // checks if the NetworkRange type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NetworkRange{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type NetworkRangeGetCreatedAtAttributeType = *time.Time
+type NetworkRangeGetCreatedAtArgType = time.Time
+type NetworkRangeGetCreatedAtRetType = time.Time
+
+func getNetworkRangeGetCreatedAtAttributeTypeOk(arg NetworkRangeGetCreatedAtAttributeType) (ret NetworkRangeGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkRangeGetCreatedAtAttributeType(arg *NetworkRangeGetCreatedAtAttributeType, val NetworkRangeGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkRangeId
+*/
+
+// isNotNullableString
+type NetworkRangeGetNetworkRangeIdAttributeType = *string
+
+func getNetworkRangeGetNetworkRangeIdAttributeTypeOk(arg NetworkRangeGetNetworkRangeIdAttributeType) (ret NetworkRangeGetNetworkRangeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkRangeGetNetworkRangeIdAttributeType(arg *NetworkRangeGetNetworkRangeIdAttributeType, val NetworkRangeGetNetworkRangeIdRetType) {
+	*arg = &val
+}
+
+type NetworkRangeGetNetworkRangeIdArgType = string
+type NetworkRangeGetNetworkRangeIdRetType = string
+
+/*
+	types and functions for prefix
+*/
+
+// isNotNullableString
+type NetworkRangeGetPrefixAttributeType = *string
+
+func getNetworkRangeGetPrefixAttributeTypeOk(arg NetworkRangeGetPrefixAttributeType) (ret NetworkRangeGetPrefixRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkRangeGetPrefixAttributeType(arg *NetworkRangeGetPrefixAttributeType, val NetworkRangeGetPrefixRetType) {
+	*arg = &val
+}
+
+type NetworkRangeGetPrefixArgType = string
+type NetworkRangeGetPrefixRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type NetworkRangeGetUpdatedAtAttributeType = *time.Time
+type NetworkRangeGetUpdatedAtArgType = time.Time
+type NetworkRangeGetUpdatedAtRetType = time.Time
+
+func getNetworkRangeGetUpdatedAtAttributeTypeOk(arg NetworkRangeGetUpdatedAtAttributeType) (ret NetworkRangeGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkRangeGetUpdatedAtAttributeType(arg *NetworkRangeGetUpdatedAtAttributeType, val NetworkRangeGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // NetworkRange Object that represents a network range.
 type NetworkRange struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt NetworkRangeGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	NetworkRangeId *string `json:"networkRangeId,omitempty"`
+	NetworkRangeId NetworkRangeGetNetworkRangeIdAttributeType `json:"networkRangeId,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
 	// REQUIRED
-	Prefix *string `json:"prefix"`
+	Prefix NetworkRangeGetPrefixAttributeType `json:"prefix"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt NetworkRangeGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _NetworkRange NetworkRange
@@ -37,9 +119,9 @@ type _NetworkRange NetworkRange
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewNetworkRange(prefix *string) *NetworkRange {
+func NewNetworkRange(prefix NetworkRangeGetPrefixArgType) *NetworkRange {
 	this := NetworkRange{}
-	this.Prefix = prefix
+	setNetworkRangeGetPrefixAttributeType(&this.Prefix, prefix)
 	return &this
 }
 
@@ -52,136 +134,104 @@ func NewNetworkRangeWithDefaults() *NetworkRange {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *NetworkRange) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *NetworkRange) GetCreatedAt() (res NetworkRangeGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkRange) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *NetworkRange) GetCreatedAtOk() (ret NetworkRangeGetCreatedAtRetType, ok bool) {
+	return getNetworkRangeGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *NetworkRange) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *NetworkRange) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *NetworkRange) SetCreatedAt(v NetworkRangeGetCreatedAtRetType) {
+	setNetworkRangeGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetNetworkRangeId returns the NetworkRangeId field value if set, zero value otherwise.
-func (o *NetworkRange) GetNetworkRangeId() *string {
-	if o == nil || IsNil(o.NetworkRangeId) {
-		var ret *string
-		return ret
-	}
-	return o.NetworkRangeId
+func (o *NetworkRange) GetNetworkRangeId() (res NetworkRangeGetNetworkRangeIdRetType) {
+	res, _ = o.GetNetworkRangeIdOk()
+	return
 }
 
 // GetNetworkRangeIdOk returns a tuple with the NetworkRangeId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkRange) GetNetworkRangeIdOk() (*string, bool) {
-	if o == nil || IsNil(o.NetworkRangeId) {
-		return nil, false
-	}
-	return o.NetworkRangeId, true
+func (o *NetworkRange) GetNetworkRangeIdOk() (ret NetworkRangeGetNetworkRangeIdRetType, ok bool) {
+	return getNetworkRangeGetNetworkRangeIdAttributeTypeOk(o.NetworkRangeId)
 }
 
 // HasNetworkRangeId returns a boolean if a field has been set.
 func (o *NetworkRange) HasNetworkRangeId() bool {
-	if o != nil && !IsNil(o.NetworkRangeId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkRangeIdOk()
+	return ok
 }
 
 // SetNetworkRangeId gets a reference to the given string and assigns it to the NetworkRangeId field.
-func (o *NetworkRange) SetNetworkRangeId(v *string) {
-	o.NetworkRangeId = v
+func (o *NetworkRange) SetNetworkRangeId(v NetworkRangeGetNetworkRangeIdRetType) {
+	setNetworkRangeGetNetworkRangeIdAttributeType(&o.NetworkRangeId, v)
 }
 
 // GetPrefix returns the Prefix field value
-func (o *NetworkRange) GetPrefix() *string {
-	if o == nil || IsNil(o.Prefix) {
-		var ret *string
-		return ret
-	}
-
-	return o.Prefix
+func (o *NetworkRange) GetPrefix() (ret NetworkRangeGetPrefixRetType) {
+	ret, _ = o.GetPrefixOk()
+	return ret
 }
 
 // GetPrefixOk returns a tuple with the Prefix field value
 // and a boolean to check if the value has been set.
-func (o *NetworkRange) GetPrefixOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Prefix, true
+func (o *NetworkRange) GetPrefixOk() (ret NetworkRangeGetPrefixRetType, ok bool) {
+	return getNetworkRangeGetPrefixAttributeTypeOk(o.Prefix)
 }
 
 // SetPrefix sets field value
-func (o *NetworkRange) SetPrefix(v *string) {
-	o.Prefix = v
+func (o *NetworkRange) SetPrefix(v NetworkRangeGetPrefixRetType) {
+	setNetworkRangeGetPrefixAttributeType(&o.Prefix, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *NetworkRange) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *NetworkRange) GetUpdatedAt() (res NetworkRangeGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NetworkRange) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *NetworkRange) GetUpdatedAtOk() (ret NetworkRangeGetUpdatedAtRetType, ok bool) {
+	return getNetworkRangeGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *NetworkRange) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *NetworkRange) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *NetworkRange) SetUpdatedAt(v NetworkRangeGetUpdatedAtRetType) {
+	setNetworkRangeGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o NetworkRange) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getNetworkRangeGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getNetworkRangeGetNetworkRangeIdAttributeTypeOk(o.NetworkRangeId); ok {
+		toSerialize["NetworkRangeId"] = val
 	}
-	if !IsNil(o.NetworkRangeId) {
-		toSerialize["networkRangeId"] = o.NetworkRangeId
+	if val, ok := getNetworkRangeGetPrefixAttributeTypeOk(o.Prefix); ok {
+		toSerialize["Prefix"] = val
 	}
-	toSerialize["prefix"] = o.Prefix
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getNetworkRangeGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_network_range_list_response.go b/services/iaas/model_network_range_list_response.go
index 84b5f7555..6504baa9f 100644
--- a/services/iaas/model_network_range_list_response.go
+++ b/services/iaas/model_network_range_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the NetworkRangeListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NetworkRangeListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type NetworkRangeListResponseGetItemsAttributeType = *[]NetworkRange
+type NetworkRangeListResponseGetItemsArgType = []NetworkRange
+type NetworkRangeListResponseGetItemsRetType = []NetworkRange
+
+func getNetworkRangeListResponseGetItemsAttributeTypeOk(arg NetworkRangeListResponseGetItemsAttributeType) (ret NetworkRangeListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNetworkRangeListResponseGetItemsAttributeType(arg *NetworkRangeListResponseGetItemsAttributeType, val NetworkRangeListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // NetworkRangeListResponse Network Range list response.
 type NetworkRangeListResponse struct {
 	// A list of network ranges.
 	// REQUIRED
-	Items *[]NetworkRange `json:"items"`
+	Items NetworkRangeListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _NetworkRangeListResponse NetworkRangeListResponse
@@ -30,9 +50,9 @@ type _NetworkRangeListResponse NetworkRangeListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewNetworkRangeListResponse(items *[]NetworkRange) *NetworkRangeListResponse {
+func NewNetworkRangeListResponse(items NetworkRangeListResponseGetItemsArgType) *NetworkRangeListResponse {
 	this := NetworkRangeListResponse{}
-	this.Items = items
+	setNetworkRangeListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewNetworkRangeListResponseWithDefaults() *NetworkRangeListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *NetworkRangeListResponse) GetItems() *[]NetworkRange {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]NetworkRange
-		return ret
-	}
-
-	return o.Items
+func (o *NetworkRangeListResponse) GetItems() (ret NetworkRangeListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *NetworkRangeListResponse) GetItemsOk() (*[]NetworkRange, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *NetworkRangeListResponse) GetItemsOk() (ret NetworkRangeListResponseGetItemsRetType, ok bool) {
+	return getNetworkRangeListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *NetworkRangeListResponse) SetItems(v *[]NetworkRange) {
-	o.Items = v
+func (o *NetworkRangeListResponse) SetItems(v NetworkRangeListResponseGetItemsRetType) {
+	setNetworkRangeListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o NetworkRangeListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getNetworkRangeListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_nic.go b/services/iaas/model_nic.go
index ecff3921c..2b64aa2c6 100644
--- a/services/iaas/model_nic.go
+++ b/services/iaas/model_nic.go
@@ -17,32 +17,301 @@ import (
 // checks if the NIC type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NIC{}
 
+/*
+	types and functions for allowedAddresses
+*/
+
+// isArray
+type NICGetAllowedAddressesAttributeType = *[]AllowedAddressesInner
+type NICGetAllowedAddressesArgType = []AllowedAddressesInner
+type NICGetAllowedAddressesRetType = []AllowedAddressesInner
+
+func getNICGetAllowedAddressesAttributeTypeOk(arg NICGetAllowedAddressesAttributeType) (ret NICGetAllowedAddressesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetAllowedAddressesAttributeType(arg *NICGetAllowedAddressesAttributeType, val NICGetAllowedAddressesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for device
+*/
+
+// isNotNullableString
+type NICGetDeviceAttributeType = *string
+
+func getNICGetDeviceAttributeTypeOk(arg NICGetDeviceAttributeType) (ret NICGetDeviceRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetDeviceAttributeType(arg *NICGetDeviceAttributeType, val NICGetDeviceRetType) {
+	*arg = &val
+}
+
+type NICGetDeviceArgType = string
+type NICGetDeviceRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type NICGetIdAttributeType = *string
+
+func getNICGetIdAttributeTypeOk(arg NICGetIdAttributeType) (ret NICGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetIdAttributeType(arg *NICGetIdAttributeType, val NICGetIdRetType) {
+	*arg = &val
+}
+
+type NICGetIdArgType = string
+type NICGetIdRetType = string
+
+/*
+	types and functions for ipv4
+*/
+
+// isNotNullableString
+type NICGetIpv4AttributeType = *string
+
+func getNICGetIpv4AttributeTypeOk(arg NICGetIpv4AttributeType) (ret NICGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetIpv4AttributeType(arg *NICGetIpv4AttributeType, val NICGetIpv4RetType) {
+	*arg = &val
+}
+
+type NICGetIpv4ArgType = string
+type NICGetIpv4RetType = string
+
+/*
+	types and functions for ipv6
+*/
+
+// isNotNullableString
+type NICGetIpv6AttributeType = *string
+
+func getNICGetIpv6AttributeTypeOk(arg NICGetIpv6AttributeType) (ret NICGetIpv6RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetIpv6AttributeType(arg *NICGetIpv6AttributeType, val NICGetIpv6RetType) {
+	*arg = &val
+}
+
+type NICGetIpv6ArgType = string
+type NICGetIpv6RetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type NICGetLabelsAttributeType = *map[string]interface{}
+type NICGetLabelsArgType = map[string]interface{}
+type NICGetLabelsRetType = map[string]interface{}
+
+func getNICGetLabelsAttributeTypeOk(arg NICGetLabelsAttributeType) (ret NICGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetLabelsAttributeType(arg *NICGetLabelsAttributeType, val NICGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for mac
+*/
+
+// isNotNullableString
+type NICGetMacAttributeType = *string
+
+func getNICGetMacAttributeTypeOk(arg NICGetMacAttributeType) (ret NICGetMacRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetMacAttributeType(arg *NICGetMacAttributeType, val NICGetMacRetType) {
+	*arg = &val
+}
+
+type NICGetMacArgType = string
+type NICGetMacRetType = string
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type NICGetNameAttributeType = *string
+
+func getNICGetNameAttributeTypeOk(arg NICGetNameAttributeType) (ret NICGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetNameAttributeType(arg *NICGetNameAttributeType, val NICGetNameRetType) {
+	*arg = &val
+}
+
+type NICGetNameArgType = string
+type NICGetNameRetType = string
+
+/*
+	types and functions for networkId
+*/
+
+// isNotNullableString
+type NICGetNetworkIdAttributeType = *string
+
+func getNICGetNetworkIdAttributeTypeOk(arg NICGetNetworkIdAttributeType) (ret NICGetNetworkIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetNetworkIdAttributeType(arg *NICGetNetworkIdAttributeType, val NICGetNetworkIdRetType) {
+	*arg = &val
+}
+
+type NICGetNetworkIdArgType = string
+type NICGetNetworkIdRetType = string
+
+/*
+	types and functions for nicSecurity
+*/
+
+// isBoolean
+type NICgetNicSecurityAttributeType = *bool
+type NICgetNicSecurityArgType = bool
+type NICgetNicSecurityRetType = bool
+
+func getNICgetNicSecurityAttributeTypeOk(arg NICgetNicSecurityAttributeType) (ret NICgetNicSecurityRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICgetNicSecurityAttributeType(arg *NICgetNicSecurityAttributeType, val NICgetNicSecurityRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for securityGroups
+*/
+
+// isArray
+type NICGetSecurityGroupsAttributeType = *[]string
+type NICGetSecurityGroupsArgType = []string
+type NICGetSecurityGroupsRetType = []string
+
+func getNICGetSecurityGroupsAttributeTypeOk(arg NICGetSecurityGroupsAttributeType) (ret NICGetSecurityGroupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetSecurityGroupsAttributeType(arg *NICGetSecurityGroupsAttributeType, val NICGetSecurityGroupsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type NICGetStatusAttributeType = *string
+
+func getNICGetStatusAttributeTypeOk(arg NICGetStatusAttributeType) (ret NICGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetStatusAttributeType(arg *NICGetStatusAttributeType, val NICGetStatusRetType) {
+	*arg = &val
+}
+
+type NICGetStatusArgType = string
+type NICGetStatusRetType = string
+
+/*
+	types and functions for type
+*/
+
+// isNotNullableString
+type NICGetTypeAttributeType = *string
+
+func getNICGetTypeAttributeTypeOk(arg NICGetTypeAttributeType) (ret NICGetTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICGetTypeAttributeType(arg *NICGetTypeAttributeType, val NICGetTypeRetType) {
+	*arg = &val
+}
+
+type NICGetTypeArgType = string
+type NICGetTypeRetType = string
+
 // NIC Object that represents a network interface.
 type NIC struct {
 	// A list of IPs or CIDR notations.
-	AllowedAddresses *[]AllowedAddressesInner `json:"allowedAddresses,omitempty"`
+	AllowedAddresses NICGetAllowedAddressesAttributeType `json:"allowedAddresses,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Device *string `json:"device,omitempty"`
+	Device NICGetDeviceAttributeType `json:"device,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id NICGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents an IP address.
-	Ipv4 *string `json:"ipv4,omitempty"`
+	Ipv4 NICGetIpv4AttributeType `json:"ipv4,omitempty"`
 	// Object that represents an IPv6 address.
-	Ipv6 *string `json:"ipv6,omitempty"`
+	Ipv6 NICGetIpv6AttributeType `json:"ipv6,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels NICGetLabelsAttributeType `json:"labels,omitempty"`
 	// Object that represents an MAC address.
-	Mac *string `json:"mac,omitempty"`
+	Mac NICGetMacAttributeType `json:"mac,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name NICGetNameAttributeType `json:"name,omitempty"`
 	// Universally Unique Identifier (UUID).
-	NetworkId *string `json:"networkId,omitempty"`
+	NetworkId NICGetNetworkIdAttributeType `json:"networkId,omitempty"`
 	// If this is set to false, then no security groups will apply to this network interface.
-	NicSecurity *bool `json:"nicSecurity,omitempty"`
+	NicSecurity NICgetNicSecurityAttributeType `json:"nicSecurity,omitempty"`
 	// A list of UUIDs.
-	SecurityGroups *[]string `json:"securityGroups,omitempty"`
-	Status         *string   `json:"status,omitempty"`
-	Type           *string   `json:"type,omitempty"`
+	SecurityGroups NICGetSecurityGroupsAttributeType `json:"securityGroups,omitempty"`
+	Status         NICGetStatusAttributeType         `json:"status,omitempty"`
+	Type           NICGetTypeAttributeType           `json:"type,omitempty"`
 }
 
 // NewNIC instantiates a new NIC object
@@ -51,8 +320,6 @@ type NIC struct {
 // will change when the set of required properties is changed
 func NewNIC() *NIC {
 	this := NIC{}
-	var nicSecurity bool = true
-	this.NicSecurity = &nicSecurity
 	return &this
 }
 
@@ -67,461 +334,344 @@ func NewNICWithDefaults() *NIC {
 }
 
 // GetAllowedAddresses returns the AllowedAddresses field value if set, zero value otherwise.
-func (o *NIC) GetAllowedAddresses() *[]AllowedAddressesInner {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		var ret *[]AllowedAddressesInner
-		return ret
-	}
-	return o.AllowedAddresses
+func (o *NIC) GetAllowedAddresses() (res NICGetAllowedAddressesRetType) {
+	res, _ = o.GetAllowedAddressesOk()
+	return
 }
 
 // GetAllowedAddressesOk returns a tuple with the AllowedAddresses field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetAllowedAddressesOk() (*[]AllowedAddressesInner, bool) {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		return nil, false
-	}
-	return o.AllowedAddresses, true
+func (o *NIC) GetAllowedAddressesOk() (ret NICGetAllowedAddressesRetType, ok bool) {
+	return getNICGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses)
 }
 
 // HasAllowedAddresses returns a boolean if a field has been set.
 func (o *NIC) HasAllowedAddresses() bool {
-	if o != nil && !IsNil(o.AllowedAddresses) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAllowedAddressesOk()
+	return ok
 }
 
 // SetAllowedAddresses gets a reference to the given []AllowedAddressesInner and assigns it to the AllowedAddresses field.
-func (o *NIC) SetAllowedAddresses(v *[]AllowedAddressesInner) {
-	o.AllowedAddresses = v
+func (o *NIC) SetAllowedAddresses(v NICGetAllowedAddressesRetType) {
+	setNICGetAllowedAddressesAttributeType(&o.AllowedAddresses, v)
 }
 
 // GetDevice returns the Device field value if set, zero value otherwise.
-func (o *NIC) GetDevice() *string {
-	if o == nil || IsNil(o.Device) {
-		var ret *string
-		return ret
-	}
-	return o.Device
+func (o *NIC) GetDevice() (res NICGetDeviceRetType) {
+	res, _ = o.GetDeviceOk()
+	return
 }
 
 // GetDeviceOk returns a tuple with the Device field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetDeviceOk() (*string, bool) {
-	if o == nil || IsNil(o.Device) {
-		return nil, false
-	}
-	return o.Device, true
+func (o *NIC) GetDeviceOk() (ret NICGetDeviceRetType, ok bool) {
+	return getNICGetDeviceAttributeTypeOk(o.Device)
 }
 
 // HasDevice returns a boolean if a field has been set.
 func (o *NIC) HasDevice() bool {
-	if o != nil && !IsNil(o.Device) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDeviceOk()
+	return ok
 }
 
 // SetDevice gets a reference to the given string and assigns it to the Device field.
-func (o *NIC) SetDevice(v *string) {
-	o.Device = v
+func (o *NIC) SetDevice(v NICGetDeviceRetType) {
+	setNICGetDeviceAttributeType(&o.Device, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *NIC) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *NIC) GetId() (res NICGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *NIC) GetIdOk() (ret NICGetIdRetType, ok bool) {
+	return getNICGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *NIC) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *NIC) SetId(v *string) {
-	o.Id = v
+func (o *NIC) SetId(v NICGetIdRetType) {
+	setNICGetIdAttributeType(&o.Id, v)
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *NIC) GetIpv4() *string {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *string
-		return ret
-	}
-	return o.Ipv4
+func (o *NIC) GetIpv4() (res NICGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetIpv4Ok() (*string, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *NIC) GetIpv4Ok() (ret NICGetIpv4RetType, ok bool) {
+	return getNICGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *NIC) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given string and assigns it to the Ipv4 field.
-func (o *NIC) SetIpv4(v *string) {
-	o.Ipv4 = v
+func (o *NIC) SetIpv4(v NICGetIpv4RetType) {
+	setNICGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 // GetIpv6 returns the Ipv6 field value if set, zero value otherwise.
-func (o *NIC) GetIpv6() *string {
-	if o == nil || IsNil(o.Ipv6) {
-		var ret *string
-		return ret
-	}
-	return o.Ipv6
+func (o *NIC) GetIpv6() (res NICGetIpv6RetType) {
+	res, _ = o.GetIpv6Ok()
+	return
 }
 
 // GetIpv6Ok returns a tuple with the Ipv6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetIpv6Ok() (*string, bool) {
-	if o == nil || IsNil(o.Ipv6) {
-		return nil, false
-	}
-	return o.Ipv6, true
+func (o *NIC) GetIpv6Ok() (ret NICGetIpv6RetType, ok bool) {
+	return getNICGetIpv6AttributeTypeOk(o.Ipv6)
 }
 
 // HasIpv6 returns a boolean if a field has been set.
 func (o *NIC) HasIpv6() bool {
-	if o != nil && !IsNil(o.Ipv6) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv6Ok()
+	return ok
 }
 
 // SetIpv6 gets a reference to the given string and assigns it to the Ipv6 field.
-func (o *NIC) SetIpv6(v *string) {
-	o.Ipv6 = v
+func (o *NIC) SetIpv6(v NICGetIpv6RetType) {
+	setNICGetIpv6AttributeType(&o.Ipv6, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *NIC) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *NIC) GetLabels() (res NICGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *NIC) GetLabelsOk() (ret NICGetLabelsRetType, ok bool) {
+	return getNICGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *NIC) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *NIC) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *NIC) SetLabels(v NICGetLabelsRetType) {
+	setNICGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetMac returns the Mac field value if set, zero value otherwise.
-func (o *NIC) GetMac() *string {
-	if o == nil || IsNil(o.Mac) {
-		var ret *string
-		return ret
-	}
-	return o.Mac
+func (o *NIC) GetMac() (res NICGetMacRetType) {
+	res, _ = o.GetMacOk()
+	return
 }
 
 // GetMacOk returns a tuple with the Mac field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetMacOk() (*string, bool) {
-	if o == nil || IsNil(o.Mac) {
-		return nil, false
-	}
-	return o.Mac, true
+func (o *NIC) GetMacOk() (ret NICGetMacRetType, ok bool) {
+	return getNICGetMacAttributeTypeOk(o.Mac)
 }
 
 // HasMac returns a boolean if a field has been set.
 func (o *NIC) HasMac() bool {
-	if o != nil && !IsNil(o.Mac) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMacOk()
+	return ok
 }
 
 // SetMac gets a reference to the given string and assigns it to the Mac field.
-func (o *NIC) SetMac(v *string) {
-	o.Mac = v
+func (o *NIC) SetMac(v NICGetMacRetType) {
+	setNICGetMacAttributeType(&o.Mac, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *NIC) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *NIC) GetName() (res NICGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *NIC) GetNameOk() (ret NICGetNameRetType, ok bool) {
+	return getNICGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *NIC) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *NIC) SetName(v *string) {
-	o.Name = v
+func (o *NIC) SetName(v NICGetNameRetType) {
+	setNICGetNameAttributeType(&o.Name, v)
 }
 
 // GetNetworkId returns the NetworkId field value if set, zero value otherwise.
-func (o *NIC) GetNetworkId() *string {
-	if o == nil || IsNil(o.NetworkId) {
-		var ret *string
-		return ret
-	}
-	return o.NetworkId
+func (o *NIC) GetNetworkId() (res NICGetNetworkIdRetType) {
+	res, _ = o.GetNetworkIdOk()
+	return
 }
 
 // GetNetworkIdOk returns a tuple with the NetworkId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetNetworkIdOk() (*string, bool) {
-	if o == nil || IsNil(o.NetworkId) {
-		return nil, false
-	}
-	return o.NetworkId, true
+func (o *NIC) GetNetworkIdOk() (ret NICGetNetworkIdRetType, ok bool) {
+	return getNICGetNetworkIdAttributeTypeOk(o.NetworkId)
 }
 
 // HasNetworkId returns a boolean if a field has been set.
 func (o *NIC) HasNetworkId() bool {
-	if o != nil && !IsNil(o.NetworkId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkIdOk()
+	return ok
 }
 
 // SetNetworkId gets a reference to the given string and assigns it to the NetworkId field.
-func (o *NIC) SetNetworkId(v *string) {
-	o.NetworkId = v
+func (o *NIC) SetNetworkId(v NICGetNetworkIdRetType) {
+	setNICGetNetworkIdAttributeType(&o.NetworkId, v)
 }
 
 // GetNicSecurity returns the NicSecurity field value if set, zero value otherwise.
-func (o *NIC) GetNicSecurity() *bool {
-	if o == nil || IsNil(o.NicSecurity) {
-		var ret *bool
-		return ret
-	}
-	return o.NicSecurity
+func (o *NIC) GetNicSecurity() (res NICgetNicSecurityRetType) {
+	res, _ = o.GetNicSecurityOk()
+	return
 }
 
 // GetNicSecurityOk returns a tuple with the NicSecurity field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetNicSecurityOk() (*bool, bool) {
-	if o == nil || IsNil(o.NicSecurity) {
-		return nil, false
-	}
-	return o.NicSecurity, true
+func (o *NIC) GetNicSecurityOk() (ret NICgetNicSecurityRetType, ok bool) {
+	return getNICgetNicSecurityAttributeTypeOk(o.NicSecurity)
 }
 
 // HasNicSecurity returns a boolean if a field has been set.
 func (o *NIC) HasNicSecurity() bool {
-	if o != nil && !IsNil(o.NicSecurity) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNicSecurityOk()
+	return ok
 }
 
 // SetNicSecurity gets a reference to the given bool and assigns it to the NicSecurity field.
-func (o *NIC) SetNicSecurity(v *bool) {
-	o.NicSecurity = v
+func (o *NIC) SetNicSecurity(v NICgetNicSecurityRetType) {
+	setNICgetNicSecurityAttributeType(&o.NicSecurity, v)
 }
 
 // GetSecurityGroups returns the SecurityGroups field value if set, zero value otherwise.
-func (o *NIC) GetSecurityGroups() *[]string {
-	if o == nil || IsNil(o.SecurityGroups) {
-		var ret *[]string
-		return ret
-	}
-	return o.SecurityGroups
+func (o *NIC) GetSecurityGroups() (res NICGetSecurityGroupsRetType) {
+	res, _ = o.GetSecurityGroupsOk()
+	return
 }
 
 // GetSecurityGroupsOk returns a tuple with the SecurityGroups field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetSecurityGroupsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.SecurityGroups) {
-		return nil, false
-	}
-	return o.SecurityGroups, true
+func (o *NIC) GetSecurityGroupsOk() (ret NICGetSecurityGroupsRetType, ok bool) {
+	return getNICGetSecurityGroupsAttributeTypeOk(o.SecurityGroups)
 }
 
 // HasSecurityGroups returns a boolean if a field has been set.
 func (o *NIC) HasSecurityGroups() bool {
-	if o != nil && !IsNil(o.SecurityGroups) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupsOk()
+	return ok
 }
 
 // SetSecurityGroups gets a reference to the given []string and assigns it to the SecurityGroups field.
-func (o *NIC) SetSecurityGroups(v *[]string) {
-	o.SecurityGroups = v
+func (o *NIC) SetSecurityGroups(v NICGetSecurityGroupsRetType) {
+	setNICGetSecurityGroupsAttributeType(&o.SecurityGroups, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *NIC) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *NIC) GetStatus() (res NICGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *NIC) GetStatusOk() (ret NICGetStatusRetType, ok bool) {
+	return getNICGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *NIC) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *NIC) SetStatus(v *string) {
-	o.Status = v
+func (o *NIC) SetStatus(v NICGetStatusRetType) {
+	setNICGetStatusAttributeType(&o.Status, v)
 }
 
 // GetType returns the Type field value if set, zero value otherwise.
-func (o *NIC) GetType() *string {
-	if o == nil || IsNil(o.Type) {
-		var ret *string
-		return ret
-	}
-	return o.Type
+func (o *NIC) GetType() (res NICGetTypeRetType) {
+	res, _ = o.GetTypeOk()
+	return
 }
 
 // GetTypeOk returns a tuple with the Type field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NIC) GetTypeOk() (*string, bool) {
-	if o == nil || IsNil(o.Type) {
-		return nil, false
-	}
-	return o.Type, true
+func (o *NIC) GetTypeOk() (ret NICGetTypeRetType, ok bool) {
+	return getNICGetTypeAttributeTypeOk(o.Type)
 }
 
 // HasType returns a boolean if a field has been set.
 func (o *NIC) HasType() bool {
-	if o != nil && !IsNil(o.Type) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetTypeOk()
+	return ok
 }
 
 // SetType gets a reference to the given string and assigns it to the Type field.
-func (o *NIC) SetType(v *string) {
-	o.Type = v
+func (o *NIC) SetType(v NICGetTypeRetType) {
+	setNICGetTypeAttributeType(&o.Type, v)
 }
 
 func (o NIC) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AllowedAddresses) {
-		toSerialize["allowedAddresses"] = o.AllowedAddresses
+	if val, ok := getNICGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses); ok {
+		toSerialize["AllowedAddresses"] = val
 	}
-	if !IsNil(o.Device) {
-		toSerialize["device"] = o.Device
+	if val, ok := getNICGetDeviceAttributeTypeOk(o.Device); ok {
+		toSerialize["Device"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getNICGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getNICGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
-	if !IsNil(o.Ipv6) {
-		toSerialize["ipv6"] = o.Ipv6
+	if val, ok := getNICGetIpv6AttributeTypeOk(o.Ipv6); ok {
+		toSerialize["Ipv6"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getNICGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Mac) {
-		toSerialize["mac"] = o.Mac
+	if val, ok := getNICGetMacAttributeTypeOk(o.Mac); ok {
+		toSerialize["Mac"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getNICGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.NetworkId) {
-		toSerialize["networkId"] = o.NetworkId
+	if val, ok := getNICGetNetworkIdAttributeTypeOk(o.NetworkId); ok {
+		toSerialize["NetworkId"] = val
 	}
-	if !IsNil(o.NicSecurity) {
-		toSerialize["nicSecurity"] = o.NicSecurity
+	if val, ok := getNICgetNicSecurityAttributeTypeOk(o.NicSecurity); ok {
+		toSerialize["NicSecurity"] = val
 	}
-	if !IsNil(o.SecurityGroups) {
-		toSerialize["securityGroups"] = o.SecurityGroups
+	if val, ok := getNICGetSecurityGroupsAttributeTypeOk(o.SecurityGroups); ok {
+		toSerialize["SecurityGroups"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getNICGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.Type) {
-		toSerialize["type"] = o.Type
+	if val, ok := getNICGetTypeAttributeTypeOk(o.Type); ok {
+		toSerialize["Type"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_nic_list_response.go b/services/iaas/model_nic_list_response.go
index 779c0d4ed..28e734428 100644
--- a/services/iaas/model_nic_list_response.go
+++ b/services/iaas/model_nic_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the NICListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &NICListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type NICListResponseGetItemsAttributeType = *[]NIC
+type NICListResponseGetItemsArgType = []NIC
+type NICListResponseGetItemsRetType = []NIC
+
+func getNICListResponseGetItemsAttributeTypeOk(arg NICListResponseGetItemsAttributeType) (ret NICListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setNICListResponseGetItemsAttributeType(arg *NICListResponseGetItemsAttributeType, val NICListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // NICListResponse NIC list response.
 type NICListResponse struct {
 	// A list of network interfaces.
 	// REQUIRED
-	Items *[]NIC `json:"items"`
+	Items NICListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _NICListResponse NICListResponse
@@ -30,9 +50,9 @@ type _NICListResponse NICListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewNICListResponse(items *[]NIC) *NICListResponse {
+func NewNICListResponse(items NICListResponseGetItemsArgType) *NICListResponse {
 	this := NICListResponse{}
-	this.Items = items
+	setNICListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewNICListResponseWithDefaults() *NICListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *NICListResponse) GetItems() *[]NIC {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]NIC
-		return ret
-	}
-
-	return o.Items
+func (o *NICListResponse) GetItems() (ret NICListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *NICListResponse) GetItemsOk() (*[]NIC, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *NICListResponse) GetItemsOk() (ret NICListResponseGetItemsRetType, ok bool) {
+	return getNICListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *NICListResponse) SetItems(v *[]NIC) {
-	o.Items = v
+func (o *NICListResponse) SetItems(v NICListResponseGetItemsRetType) {
+	setNICListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o NICListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getNICListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_partial_update_network_area_payload.go b/services/iaas/model_partial_update_network_area_payload.go
index f3e8781ce..9dcfc3e31 100644
--- a/services/iaas/model_partial_update_network_area_payload.go
+++ b/services/iaas/model_partial_update_network_area_payload.go
@@ -17,13 +17,74 @@ import (
 // checks if the PartialUpdateNetworkAreaPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &PartialUpdateNetworkAreaPayload{}
 
+/*
+	types and functions for addressFamily
+*/
+
+// isModel
+type PartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeType = *UpdateAreaAddressFamily
+type PartialUpdateNetworkAreaPayloadGetAddressFamilyArgType = UpdateAreaAddressFamily
+type PartialUpdateNetworkAreaPayloadGetAddressFamilyRetType = UpdateAreaAddressFamily
+
+func getPartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeTypeOk(arg PartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeType) (ret PartialUpdateNetworkAreaPayloadGetAddressFamilyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeType(arg *PartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeType, val PartialUpdateNetworkAreaPayloadGetAddressFamilyRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type PartialUpdateNetworkAreaPayloadGetLabelsAttributeType = *map[string]interface{}
+type PartialUpdateNetworkAreaPayloadGetLabelsArgType = map[string]interface{}
+type PartialUpdateNetworkAreaPayloadGetLabelsRetType = map[string]interface{}
+
+func getPartialUpdateNetworkAreaPayloadGetLabelsAttributeTypeOk(arg PartialUpdateNetworkAreaPayloadGetLabelsAttributeType) (ret PartialUpdateNetworkAreaPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPartialUpdateNetworkAreaPayloadGetLabelsAttributeType(arg *PartialUpdateNetworkAreaPayloadGetLabelsAttributeType, val PartialUpdateNetworkAreaPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type PartialUpdateNetworkAreaPayloadGetNameAttributeType = *string
+
+func getPartialUpdateNetworkAreaPayloadGetNameAttributeTypeOk(arg PartialUpdateNetworkAreaPayloadGetNameAttributeType) (ret PartialUpdateNetworkAreaPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPartialUpdateNetworkAreaPayloadGetNameAttributeType(arg *PartialUpdateNetworkAreaPayloadGetNameAttributeType, val PartialUpdateNetworkAreaPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type PartialUpdateNetworkAreaPayloadGetNameArgType = string
+type PartialUpdateNetworkAreaPayloadGetNameRetType = string
+
 // PartialUpdateNetworkAreaPayload struct for PartialUpdateNetworkAreaPayload
 type PartialUpdateNetworkAreaPayload struct {
-	AddressFamily *UpdateAreaAddressFamily `json:"addressFamily,omitempty"`
+	AddressFamily PartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeType `json:"addressFamily,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels PartialUpdateNetworkAreaPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name PartialUpdateNetworkAreaPayloadGetNameAttributeType `json:"name,omitempty"`
 }
 
 // NewPartialUpdateNetworkAreaPayload instantiates a new PartialUpdateNetworkAreaPayload object
@@ -44,111 +105,84 @@ func NewPartialUpdateNetworkAreaPayloadWithDefaults() *PartialUpdateNetworkAreaP
 }
 
 // GetAddressFamily returns the AddressFamily field value if set, zero value otherwise.
-func (o *PartialUpdateNetworkAreaPayload) GetAddressFamily() *UpdateAreaAddressFamily {
-	if o == nil || IsNil(o.AddressFamily) {
-		var ret *UpdateAreaAddressFamily
-		return ret
-	}
-	return o.AddressFamily
+func (o *PartialUpdateNetworkAreaPayload) GetAddressFamily() (res PartialUpdateNetworkAreaPayloadGetAddressFamilyRetType) {
+	res, _ = o.GetAddressFamilyOk()
+	return
 }
 
 // GetAddressFamilyOk returns a tuple with the AddressFamily field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PartialUpdateNetworkAreaPayload) GetAddressFamilyOk() (*UpdateAreaAddressFamily, bool) {
-	if o == nil || IsNil(o.AddressFamily) {
-		return nil, false
-	}
-	return o.AddressFamily, true
+func (o *PartialUpdateNetworkAreaPayload) GetAddressFamilyOk() (ret PartialUpdateNetworkAreaPayloadGetAddressFamilyRetType, ok bool) {
+	return getPartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily)
 }
 
 // HasAddressFamily returns a boolean if a field has been set.
 func (o *PartialUpdateNetworkAreaPayload) HasAddressFamily() bool {
-	if o != nil && !IsNil(o.AddressFamily) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAddressFamilyOk()
+	return ok
 }
 
 // SetAddressFamily gets a reference to the given UpdateAreaAddressFamily and assigns it to the AddressFamily field.
-func (o *PartialUpdateNetworkAreaPayload) SetAddressFamily(v *UpdateAreaAddressFamily) {
-	o.AddressFamily = v
+func (o *PartialUpdateNetworkAreaPayload) SetAddressFamily(v PartialUpdateNetworkAreaPayloadGetAddressFamilyRetType) {
+	setPartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeType(&o.AddressFamily, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *PartialUpdateNetworkAreaPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *PartialUpdateNetworkAreaPayload) GetLabels() (res PartialUpdateNetworkAreaPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PartialUpdateNetworkAreaPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *PartialUpdateNetworkAreaPayload) GetLabelsOk() (ret PartialUpdateNetworkAreaPayloadGetLabelsRetType, ok bool) {
+	return getPartialUpdateNetworkAreaPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *PartialUpdateNetworkAreaPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *PartialUpdateNetworkAreaPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *PartialUpdateNetworkAreaPayload) SetLabels(v PartialUpdateNetworkAreaPayloadGetLabelsRetType) {
+	setPartialUpdateNetworkAreaPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *PartialUpdateNetworkAreaPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *PartialUpdateNetworkAreaPayload) GetName() (res PartialUpdateNetworkAreaPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PartialUpdateNetworkAreaPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *PartialUpdateNetworkAreaPayload) GetNameOk() (ret PartialUpdateNetworkAreaPayloadGetNameRetType, ok bool) {
+	return getPartialUpdateNetworkAreaPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *PartialUpdateNetworkAreaPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *PartialUpdateNetworkAreaPayload) SetName(v *string) {
-	o.Name = v
+func (o *PartialUpdateNetworkAreaPayload) SetName(v PartialUpdateNetworkAreaPayloadGetNameRetType) {
+	setPartialUpdateNetworkAreaPayloadGetNameAttributeType(&o.Name, v)
 }
 
 func (o PartialUpdateNetworkAreaPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AddressFamily) {
-		toSerialize["addressFamily"] = o.AddressFamily
+	if val, ok := getPartialUpdateNetworkAreaPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily); ok {
+		toSerialize["AddressFamily"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getPartialUpdateNetworkAreaPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getPartialUpdateNetworkAreaPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_partial_update_network_payload.go b/services/iaas/model_partial_update_network_payload.go
index 43fe96d49..6ee79d719 100644
--- a/services/iaas/model_partial_update_network_payload.go
+++ b/services/iaas/model_partial_update_network_payload.go
@@ -17,15 +17,96 @@ import (
 // checks if the PartialUpdateNetworkPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &PartialUpdateNetworkPayload{}
 
+/*
+	types and functions for addressFamily
+*/
+
+// isModel
+type PartialUpdateNetworkPayloadGetAddressFamilyAttributeType = *UpdateNetworkAddressFamily
+type PartialUpdateNetworkPayloadGetAddressFamilyArgType = UpdateNetworkAddressFamily
+type PartialUpdateNetworkPayloadGetAddressFamilyRetType = UpdateNetworkAddressFamily
+
+func getPartialUpdateNetworkPayloadGetAddressFamilyAttributeTypeOk(arg PartialUpdateNetworkPayloadGetAddressFamilyAttributeType) (ret PartialUpdateNetworkPayloadGetAddressFamilyRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPartialUpdateNetworkPayloadGetAddressFamilyAttributeType(arg *PartialUpdateNetworkPayloadGetAddressFamilyAttributeType, val PartialUpdateNetworkPayloadGetAddressFamilyRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type PartialUpdateNetworkPayloadGetLabelsAttributeType = *map[string]interface{}
+type PartialUpdateNetworkPayloadGetLabelsArgType = map[string]interface{}
+type PartialUpdateNetworkPayloadGetLabelsRetType = map[string]interface{}
+
+func getPartialUpdateNetworkPayloadGetLabelsAttributeTypeOk(arg PartialUpdateNetworkPayloadGetLabelsAttributeType) (ret PartialUpdateNetworkPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPartialUpdateNetworkPayloadGetLabelsAttributeType(arg *PartialUpdateNetworkPayloadGetLabelsAttributeType, val PartialUpdateNetworkPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type PartialUpdateNetworkPayloadGetNameAttributeType = *string
+
+func getPartialUpdateNetworkPayloadGetNameAttributeTypeOk(arg PartialUpdateNetworkPayloadGetNameAttributeType) (ret PartialUpdateNetworkPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPartialUpdateNetworkPayloadGetNameAttributeType(arg *PartialUpdateNetworkPayloadGetNameAttributeType, val PartialUpdateNetworkPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type PartialUpdateNetworkPayloadGetNameArgType = string
+type PartialUpdateNetworkPayloadGetNameRetType = string
+
+/*
+	types and functions for routed
+*/
+
+// isBoolean
+type PartialUpdateNetworkPayloadgetRoutedAttributeType = *bool
+type PartialUpdateNetworkPayloadgetRoutedArgType = bool
+type PartialUpdateNetworkPayloadgetRoutedRetType = bool
+
+func getPartialUpdateNetworkPayloadgetRoutedAttributeTypeOk(arg PartialUpdateNetworkPayloadgetRoutedAttributeType) (ret PartialUpdateNetworkPayloadgetRoutedRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPartialUpdateNetworkPayloadgetRoutedAttributeType(arg *PartialUpdateNetworkPayloadgetRoutedAttributeType, val PartialUpdateNetworkPayloadgetRoutedRetType) {
+	*arg = &val
+}
+
 // PartialUpdateNetworkPayload Object that represents the request body for a network update.
 type PartialUpdateNetworkPayload struct {
-	AddressFamily *UpdateNetworkAddressFamily `json:"addressFamily,omitempty"`
+	AddressFamily PartialUpdateNetworkPayloadGetAddressFamilyAttributeType `json:"addressFamily,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels PartialUpdateNetworkPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name PartialUpdateNetworkPayloadGetNameAttributeType `json:"name,omitempty"`
 	// Shows if the network is routed and therefore accessible from other networks.
-	Routed *bool `json:"routed,omitempty"`
+	Routed PartialUpdateNetworkPayloadgetRoutedAttributeType `json:"routed,omitempty"`
 }
 
 // NewPartialUpdateNetworkPayload instantiates a new PartialUpdateNetworkPayload object
@@ -46,146 +127,110 @@ func NewPartialUpdateNetworkPayloadWithDefaults() *PartialUpdateNetworkPayload {
 }
 
 // GetAddressFamily returns the AddressFamily field value if set, zero value otherwise.
-func (o *PartialUpdateNetworkPayload) GetAddressFamily() *UpdateNetworkAddressFamily {
-	if o == nil || IsNil(o.AddressFamily) {
-		var ret *UpdateNetworkAddressFamily
-		return ret
-	}
-	return o.AddressFamily
+func (o *PartialUpdateNetworkPayload) GetAddressFamily() (res PartialUpdateNetworkPayloadGetAddressFamilyRetType) {
+	res, _ = o.GetAddressFamilyOk()
+	return
 }
 
 // GetAddressFamilyOk returns a tuple with the AddressFamily field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PartialUpdateNetworkPayload) GetAddressFamilyOk() (*UpdateNetworkAddressFamily, bool) {
-	if o == nil || IsNil(o.AddressFamily) {
-		return nil, false
-	}
-	return o.AddressFamily, true
+func (o *PartialUpdateNetworkPayload) GetAddressFamilyOk() (ret PartialUpdateNetworkPayloadGetAddressFamilyRetType, ok bool) {
+	return getPartialUpdateNetworkPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily)
 }
 
 // HasAddressFamily returns a boolean if a field has been set.
 func (o *PartialUpdateNetworkPayload) HasAddressFamily() bool {
-	if o != nil && !IsNil(o.AddressFamily) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAddressFamilyOk()
+	return ok
 }
 
 // SetAddressFamily gets a reference to the given UpdateNetworkAddressFamily and assigns it to the AddressFamily field.
-func (o *PartialUpdateNetworkPayload) SetAddressFamily(v *UpdateNetworkAddressFamily) {
-	o.AddressFamily = v
+func (o *PartialUpdateNetworkPayload) SetAddressFamily(v PartialUpdateNetworkPayloadGetAddressFamilyRetType) {
+	setPartialUpdateNetworkPayloadGetAddressFamilyAttributeType(&o.AddressFamily, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *PartialUpdateNetworkPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *PartialUpdateNetworkPayload) GetLabels() (res PartialUpdateNetworkPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PartialUpdateNetworkPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *PartialUpdateNetworkPayload) GetLabelsOk() (ret PartialUpdateNetworkPayloadGetLabelsRetType, ok bool) {
+	return getPartialUpdateNetworkPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *PartialUpdateNetworkPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *PartialUpdateNetworkPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *PartialUpdateNetworkPayload) SetLabels(v PartialUpdateNetworkPayloadGetLabelsRetType) {
+	setPartialUpdateNetworkPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *PartialUpdateNetworkPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *PartialUpdateNetworkPayload) GetName() (res PartialUpdateNetworkPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PartialUpdateNetworkPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *PartialUpdateNetworkPayload) GetNameOk() (ret PartialUpdateNetworkPayloadGetNameRetType, ok bool) {
+	return getPartialUpdateNetworkPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *PartialUpdateNetworkPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *PartialUpdateNetworkPayload) SetName(v *string) {
-	o.Name = v
+func (o *PartialUpdateNetworkPayload) SetName(v PartialUpdateNetworkPayloadGetNameRetType) {
+	setPartialUpdateNetworkPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetRouted returns the Routed field value if set, zero value otherwise.
-func (o *PartialUpdateNetworkPayload) GetRouted() *bool {
-	if o == nil || IsNil(o.Routed) {
-		var ret *bool
-		return ret
-	}
-	return o.Routed
+func (o *PartialUpdateNetworkPayload) GetRouted() (res PartialUpdateNetworkPayloadgetRoutedRetType) {
+	res, _ = o.GetRoutedOk()
+	return
 }
 
 // GetRoutedOk returns a tuple with the Routed field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PartialUpdateNetworkPayload) GetRoutedOk() (*bool, bool) {
-	if o == nil || IsNil(o.Routed) {
-		return nil, false
-	}
-	return o.Routed, true
+func (o *PartialUpdateNetworkPayload) GetRoutedOk() (ret PartialUpdateNetworkPayloadgetRoutedRetType, ok bool) {
+	return getPartialUpdateNetworkPayloadgetRoutedAttributeTypeOk(o.Routed)
 }
 
 // HasRouted returns a boolean if a field has been set.
 func (o *PartialUpdateNetworkPayload) HasRouted() bool {
-	if o != nil && !IsNil(o.Routed) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRoutedOk()
+	return ok
 }
 
 // SetRouted gets a reference to the given bool and assigns it to the Routed field.
-func (o *PartialUpdateNetworkPayload) SetRouted(v *bool) {
-	o.Routed = v
+func (o *PartialUpdateNetworkPayload) SetRouted(v PartialUpdateNetworkPayloadgetRoutedRetType) {
+	setPartialUpdateNetworkPayloadgetRoutedAttributeType(&o.Routed, v)
 }
 
 func (o PartialUpdateNetworkPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AddressFamily) {
-		toSerialize["addressFamily"] = o.AddressFamily
+	if val, ok := getPartialUpdateNetworkPayloadGetAddressFamilyAttributeTypeOk(o.AddressFamily); ok {
+		toSerialize["AddressFamily"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getPartialUpdateNetworkPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getPartialUpdateNetworkPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Routed) {
-		toSerialize["routed"] = o.Routed
+	if val, ok := getPartialUpdateNetworkPayloadgetRoutedAttributeTypeOk(o.Routed); ok {
+		toSerialize["Routed"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_port_range.go b/services/iaas/model_port_range.go
index d652cf5e0..e32e8dd7a 100644
--- a/services/iaas/model_port_range.go
+++ b/services/iaas/model_port_range.go
@@ -17,14 +17,54 @@ import (
 // checks if the PortRange type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &PortRange{}
 
+/*
+	types and functions for max
+*/
+
+// isLong
+type PortRangeGetMaxAttributeType = *int64
+type PortRangeGetMaxArgType = int64
+type PortRangeGetMaxRetType = int64
+
+func getPortRangeGetMaxAttributeTypeOk(arg PortRangeGetMaxAttributeType) (ret PortRangeGetMaxRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPortRangeGetMaxAttributeType(arg *PortRangeGetMaxAttributeType, val PortRangeGetMaxRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for min
+*/
+
+// isLong
+type PortRangeGetMinAttributeType = *int64
+type PortRangeGetMinArgType = int64
+type PortRangeGetMinRetType = int64
+
+func getPortRangeGetMinAttributeTypeOk(arg PortRangeGetMinAttributeType) (ret PortRangeGetMinRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPortRangeGetMinAttributeType(arg *PortRangeGetMinAttributeType, val PortRangeGetMinRetType) {
+	*arg = &val
+}
+
 // PortRange Object that represents a range of ports.
 type PortRange struct {
 	// The maximum port number. Should be greater or equal to the minimum.
 	// REQUIRED
-	Max *int64 `json:"max"`
+	Max PortRangeGetMaxAttributeType `json:"max"`
 	// The minimum port number. Should be less or equal to the maximum.
 	// REQUIRED
-	Min *int64 `json:"min"`
+	Min PortRangeGetMinAttributeType `json:"min"`
 }
 
 type _PortRange PortRange
@@ -33,10 +73,10 @@ type _PortRange PortRange
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewPortRange(max *int64, min *int64) *PortRange {
+func NewPortRange(max PortRangeGetMaxArgType, min PortRangeGetMinArgType) *PortRange {
 	this := PortRange{}
-	this.Max = max
-	this.Min = min
+	setPortRangeGetMaxAttributeType(&this.Max, max)
+	setPortRangeGetMinAttributeType(&this.Min, min)
 	return &this
 }
 
@@ -49,57 +89,47 @@ func NewPortRangeWithDefaults() *PortRange {
 }
 
 // GetMax returns the Max field value
-func (o *PortRange) GetMax() *int64 {
-	if o == nil || IsNil(o.Max) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Max
+func (o *PortRange) GetMax() (ret PortRangeGetMaxRetType) {
+	ret, _ = o.GetMaxOk()
+	return ret
 }
 
 // GetMaxOk returns a tuple with the Max field value
 // and a boolean to check if the value has been set.
-func (o *PortRange) GetMaxOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Max, true
+func (o *PortRange) GetMaxOk() (ret PortRangeGetMaxRetType, ok bool) {
+	return getPortRangeGetMaxAttributeTypeOk(o.Max)
 }
 
 // SetMax sets field value
-func (o *PortRange) SetMax(v *int64) {
-	o.Max = v
+func (o *PortRange) SetMax(v PortRangeGetMaxRetType) {
+	setPortRangeGetMaxAttributeType(&o.Max, v)
 }
 
 // GetMin returns the Min field value
-func (o *PortRange) GetMin() *int64 {
-	if o == nil || IsNil(o.Min) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Min
+func (o *PortRange) GetMin() (ret PortRangeGetMinRetType) {
+	ret, _ = o.GetMinOk()
+	return ret
 }
 
 // GetMinOk returns a tuple with the Min field value
 // and a boolean to check if the value has been set.
-func (o *PortRange) GetMinOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Min, true
+func (o *PortRange) GetMinOk() (ret PortRangeGetMinRetType, ok bool) {
+	return getPortRangeGetMinAttributeTypeOk(o.Min)
 }
 
 // SetMin sets field value
-func (o *PortRange) SetMin(v *int64) {
-	o.Min = v
+func (o *PortRange) SetMin(v PortRangeGetMinRetType) {
+	setPortRangeGetMinAttributeType(&o.Min, v)
 }
 
 func (o PortRange) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["max"] = o.Max
-	toSerialize["min"] = o.Min
+	if val, ok := getPortRangeGetMaxAttributeTypeOk(o.Max); ok {
+		toSerialize["Max"] = val
+	}
+	if val, ok := getPortRangeGetMinAttributeTypeOk(o.Min); ok {
+		toSerialize["Min"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_project_list_response.go b/services/iaas/model_project_list_response.go
index 9de206806..d43beca0e 100644
--- a/services/iaas/model_project_list_response.go
+++ b/services/iaas/model_project_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the ProjectListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ProjectListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type ProjectListResponseGetItemsAttributeType = *[]string
+type ProjectListResponseGetItemsArgType = []string
+type ProjectListResponseGetItemsRetType = []string
+
+func getProjectListResponseGetItemsAttributeTypeOk(arg ProjectListResponseGetItemsAttributeType) (ret ProjectListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setProjectListResponseGetItemsAttributeType(arg *ProjectListResponseGetItemsAttributeType, val ProjectListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // ProjectListResponse Project list response.
 type ProjectListResponse struct {
 	// A list of STACKIT projects.
 	// REQUIRED
-	Items *[]string `json:"items"`
+	Items ProjectListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _ProjectListResponse ProjectListResponse
@@ -30,9 +50,9 @@ type _ProjectListResponse ProjectListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewProjectListResponse(items *[]string) *ProjectListResponse {
+func NewProjectListResponse(items ProjectListResponseGetItemsArgType) *ProjectListResponse {
 	this := ProjectListResponse{}
-	this.Items = items
+	setProjectListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewProjectListResponseWithDefaults() *ProjectListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *ProjectListResponse) GetItems() *[]string {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]string
-		return ret
-	}
-
-	return o.Items
+func (o *ProjectListResponse) GetItems() (ret ProjectListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *ProjectListResponse) GetItemsOk() (*[]string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *ProjectListResponse) GetItemsOk() (ret ProjectListResponseGetItemsRetType, ok bool) {
+	return getProjectListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *ProjectListResponse) SetItems(v *[]string) {
-	o.Items = v
+func (o *ProjectListResponse) SetItems(v ProjectListResponseGetItemsRetType) {
+	setProjectListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o ProjectListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getProjectListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_protocol.go b/services/iaas/model_protocol.go
index 19785adf8..74f8a89db 100644
--- a/services/iaas/model_protocol.go
+++ b/services/iaas/model_protocol.go
@@ -17,12 +17,53 @@ import (
 // checks if the Protocol type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Protocol{}
 
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type ProtocolGetNameAttributeType = *string
+
+func getProtocolGetNameAttributeTypeOk(arg ProtocolGetNameAttributeType) (ret ProtocolGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setProtocolGetNameAttributeType(arg *ProtocolGetNameAttributeType, val ProtocolGetNameRetType) {
+	*arg = &val
+}
+
+type ProtocolGetNameArgType = string
+type ProtocolGetNameRetType = string
+
+/*
+	types and functions for number
+*/
+
+// isLong
+type ProtocolGetNumberAttributeType = *int64
+type ProtocolGetNumberArgType = int64
+type ProtocolGetNumberRetType = int64
+
+func getProtocolGetNumberAttributeTypeOk(arg ProtocolGetNumberAttributeType) (ret ProtocolGetNumberRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setProtocolGetNumberAttributeType(arg *ProtocolGetNumberAttributeType, val ProtocolGetNumberRetType) {
+	*arg = &val
+}
+
 // Protocol The schema for a protocol of a security group rule.
 type Protocol struct {
 	// The protocol name which the rule should match. Possible values: `ah`, `dccp`, `egp`, `esp`, `gre`, `icmp`, `igmp`, `ipip`, `ipv6-encap`, `ipv6-frag`, `ipv6-icmp`, `ipv6-nonxt`, `ipv6-opts`, `ipv6-route`, `ospf`, `pgm`, `rsvp`, `sctp`, `tcp`, `udp`, `udplite`, `vrrp`.
-	Name *string `json:"name,omitempty"`
+	Name ProtocolGetNameAttributeType `json:"name,omitempty"`
 	// The protocol number which the rule should match.
-	Number *int64 `json:"number,omitempty"`
+	Number ProtocolGetNumberAttributeType `json:"number,omitempty"`
 }
 
 // NewProtocol instantiates a new Protocol object
@@ -43,76 +84,58 @@ func NewProtocolWithDefaults() *Protocol {
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *Protocol) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *Protocol) GetName() (res ProtocolGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Protocol) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Protocol) GetNameOk() (ret ProtocolGetNameRetType, ok bool) {
+	return getProtocolGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *Protocol) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *Protocol) SetName(v *string) {
-	o.Name = v
+func (o *Protocol) SetName(v ProtocolGetNameRetType) {
+	setProtocolGetNameAttributeType(&o.Name, v)
 }
 
 // GetNumber returns the Number field value if set, zero value otherwise.
-func (o *Protocol) GetNumber() *int64 {
-	if o == nil || IsNil(o.Number) {
-		var ret *int64
-		return ret
-	}
-	return o.Number
+func (o *Protocol) GetNumber() (res ProtocolGetNumberRetType) {
+	res, _ = o.GetNumberOk()
+	return
 }
 
 // GetNumberOk returns a tuple with the Number field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Protocol) GetNumberOk() (*int64, bool) {
-	if o == nil || IsNil(o.Number) {
-		return nil, false
-	}
-	return o.Number, true
+func (o *Protocol) GetNumberOk() (ret ProtocolGetNumberRetType, ok bool) {
+	return getProtocolGetNumberAttributeTypeOk(o.Number)
 }
 
 // HasNumber returns a boolean if a field has been set.
 func (o *Protocol) HasNumber() bool {
-	if o != nil && !IsNil(o.Number) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNumberOk()
+	return ok
 }
 
 // SetNumber gets a reference to the given int64 and assigns it to the Number field.
-func (o *Protocol) SetNumber(v *int64) {
-	o.Number = v
+func (o *Protocol) SetNumber(v ProtocolGetNumberRetType) {
+	setProtocolGetNumberAttributeType(&o.Number, v)
 }
 
 func (o Protocol) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getProtocolGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Number) {
-		toSerialize["number"] = o.Number
+	if val, ok := getProtocolGetNumberAttributeTypeOk(o.Number); ok {
+		toSerialize["Number"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_public_ip.go b/services/iaas/model_public_ip.go
index bf715f0e1..094040ec4 100644
--- a/services/iaas/model_public_ip.go
+++ b/services/iaas/model_public_ip.go
@@ -17,16 +17,103 @@ import (
 // checks if the PublicIp type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &PublicIp{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type PublicIpGetIdAttributeType = *string
+
+func getPublicIpGetIdAttributeTypeOk(arg PublicIpGetIdAttributeType) (ret PublicIpGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPublicIpGetIdAttributeType(arg *PublicIpGetIdAttributeType, val PublicIpGetIdRetType) {
+	*arg = &val
+}
+
+type PublicIpGetIdArgType = string
+type PublicIpGetIdRetType = string
+
+/*
+	types and functions for ip
+*/
+
+// isNotNullableString
+type PublicIpGetIpAttributeType = *string
+
+func getPublicIpGetIpAttributeTypeOk(arg PublicIpGetIpAttributeType) (ret PublicIpGetIpRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPublicIpGetIpAttributeType(arg *PublicIpGetIpAttributeType, val PublicIpGetIpRetType) {
+	*arg = &val
+}
+
+type PublicIpGetIpArgType = string
+type PublicIpGetIpRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type PublicIpGetLabelsAttributeType = *map[string]interface{}
+type PublicIpGetLabelsArgType = map[string]interface{}
+type PublicIpGetLabelsRetType = map[string]interface{}
+
+func getPublicIpGetLabelsAttributeTypeOk(arg PublicIpGetLabelsAttributeType) (ret PublicIpGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPublicIpGetLabelsAttributeType(arg *PublicIpGetLabelsAttributeType, val PublicIpGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkInterface
+*/
+
+// isNullableString
+type PublicIpGetNetworkInterfaceAttributeType = *NullableString
+
+func getPublicIpGetNetworkInterfaceAttributeTypeOk(arg PublicIpGetNetworkInterfaceAttributeType) (ret PublicIpGetNetworkInterfaceRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setPublicIpGetNetworkInterfaceAttributeType(arg *PublicIpGetNetworkInterfaceAttributeType, val PublicIpGetNetworkInterfaceRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type PublicIpGetNetworkInterfaceArgType = *string
+type PublicIpGetNetworkInterfaceRetType = *string
+
 // PublicIp Object that represents a public IP.
 type PublicIp struct {
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id PublicIpGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents an IP address.
-	Ip *string `json:"ip,omitempty"`
+	Ip PublicIpGetIpAttributeType `json:"ip,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels PublicIpGetLabelsAttributeType `json:"labels,omitempty"`
 	// Universally Unique Identifier (UUID).
-	NetworkInterface *NullableString `json:"networkInterface,omitempty"`
+	NetworkInterface PublicIpGetNetworkInterfaceAttributeType `json:"networkInterface,omitempty"`
 }
 
 // NewPublicIp instantiates a new PublicIp object
@@ -47,166 +134,121 @@ func NewPublicIpWithDefaults() *PublicIp {
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *PublicIp) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *PublicIp) GetId() (res PublicIpGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PublicIp) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *PublicIp) GetIdOk() (ret PublicIpGetIdRetType, ok bool) {
+	return getPublicIpGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *PublicIp) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *PublicIp) SetId(v *string) {
-	o.Id = v
+func (o *PublicIp) SetId(v PublicIpGetIdRetType) {
+	setPublicIpGetIdAttributeType(&o.Id, v)
 }
 
 // GetIp returns the Ip field value if set, zero value otherwise.
-func (o *PublicIp) GetIp() *string {
-	if o == nil || IsNil(o.Ip) {
-		var ret *string
-		return ret
-	}
-	return o.Ip
+func (o *PublicIp) GetIp() (res PublicIpGetIpRetType) {
+	res, _ = o.GetIpOk()
+	return
 }
 
 // GetIpOk returns a tuple with the Ip field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PublicIp) GetIpOk() (*string, bool) {
-	if o == nil || IsNil(o.Ip) {
-		return nil, false
-	}
-	return o.Ip, true
+func (o *PublicIp) GetIpOk() (ret PublicIpGetIpRetType, ok bool) {
+	return getPublicIpGetIpAttributeTypeOk(o.Ip)
 }
 
 // HasIp returns a boolean if a field has been set.
 func (o *PublicIp) HasIp() bool {
-	if o != nil && !IsNil(o.Ip) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpOk()
+	return ok
 }
 
 // SetIp gets a reference to the given string and assigns it to the Ip field.
-func (o *PublicIp) SetIp(v *string) {
-	o.Ip = v
+func (o *PublicIp) SetIp(v PublicIpGetIpRetType) {
+	setPublicIpGetIpAttributeType(&o.Ip, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *PublicIp) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *PublicIp) GetLabels() (res PublicIpGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *PublicIp) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *PublicIp) GetLabelsOk() (ret PublicIpGetLabelsRetType, ok bool) {
+	return getPublicIpGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *PublicIp) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *PublicIp) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *PublicIp) SetLabels(v PublicIpGetLabelsRetType) {
+	setPublicIpGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetNetworkInterface returns the NetworkInterface field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *PublicIp) GetNetworkInterface() *string {
-	if o == nil || IsNil(o.NetworkInterface) || IsNil(o.NetworkInterface.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.NetworkInterface.Get()
+func (o *PublicIp) GetNetworkInterface() (res PublicIpGetNetworkInterfaceRetType) {
+	res, _ = o.GetNetworkInterfaceOk()
+	return
 }
 
 // GetNetworkInterfaceOk returns a tuple with the NetworkInterface field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *PublicIp) GetNetworkInterfaceOk() (*string, bool) {
-	if o == nil || IsNil(o.NetworkInterface) {
-		return nil, false
-	}
-	return o.NetworkInterface.Get(), o.NetworkInterface.IsSet()
+func (o *PublicIp) GetNetworkInterfaceOk() (ret PublicIpGetNetworkInterfaceRetType, ok bool) {
+	return getPublicIpGetNetworkInterfaceAttributeTypeOk(o.NetworkInterface)
 }
 
 // HasNetworkInterface returns a boolean if a field has been set.
 func (o *PublicIp) HasNetworkInterface() bool {
-	if o != nil && !IsNil(o.NetworkInterface) && o.NetworkInterface.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkInterfaceOk()
+	return ok
 }
 
 // SetNetworkInterface gets a reference to the given string and assigns it to the NetworkInterface field.
-func (o *PublicIp) SetNetworkInterface(v *string) {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Set(v)
+func (o *PublicIp) SetNetworkInterface(v PublicIpGetNetworkInterfaceRetType) {
+	setPublicIpGetNetworkInterfaceAttributeType(&o.NetworkInterface, v)
 }
 
 // SetNetworkInterfaceNil sets the value for NetworkInterface to be an explicit nil
 func (o *PublicIp) SetNetworkInterfaceNil() {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Set(nil)
+	o.NetworkInterface = nil
 }
 
 // UnsetNetworkInterface ensures that no value is present for NetworkInterface, not even an explicit nil
 func (o *PublicIp) UnsetNetworkInterface() {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Unset()
+	o.NetworkInterface = nil
 }
 
 func (o PublicIp) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getPublicIpGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Ip) {
-		toSerialize["ip"] = o.Ip
+	if val, ok := getPublicIpGetIpAttributeTypeOk(o.Ip); ok {
+		toSerialize["Ip"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getPublicIpGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if o.NetworkInterface.IsSet() {
-		toSerialize["networkInterface"] = o.NetworkInterface.Get()
+	if val, ok := getPublicIpGetNetworkInterfaceAttributeTypeOk(o.NetworkInterface); ok {
+		toSerialize["NetworkInterface"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_public_ip_list_response.go b/services/iaas/model_public_ip_list_response.go
index b48d57306..cec014ec7 100644
--- a/services/iaas/model_public_ip_list_response.go
+++ b/services/iaas/model_public_ip_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the PublicIpListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &PublicIpListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type PublicIpListResponseGetItemsAttributeType = *[]PublicIp
+type PublicIpListResponseGetItemsArgType = []PublicIp
+type PublicIpListResponseGetItemsRetType = []PublicIp
+
+func getPublicIpListResponseGetItemsAttributeTypeOk(arg PublicIpListResponseGetItemsAttributeType) (ret PublicIpListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPublicIpListResponseGetItemsAttributeType(arg *PublicIpListResponseGetItemsAttributeType, val PublicIpListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // PublicIpListResponse Public IP list response.
 type PublicIpListResponse struct {
 	// A list of public IPs.
 	// REQUIRED
-	Items *[]PublicIp `json:"items"`
+	Items PublicIpListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _PublicIpListResponse PublicIpListResponse
@@ -30,9 +50,9 @@ type _PublicIpListResponse PublicIpListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewPublicIpListResponse(items *[]PublicIp) *PublicIpListResponse {
+func NewPublicIpListResponse(items PublicIpListResponseGetItemsArgType) *PublicIpListResponse {
 	this := PublicIpListResponse{}
-	this.Items = items
+	setPublicIpListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewPublicIpListResponseWithDefaults() *PublicIpListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *PublicIpListResponse) GetItems() *[]PublicIp {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]PublicIp
-		return ret
-	}
-
-	return o.Items
+func (o *PublicIpListResponse) GetItems() (ret PublicIpListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *PublicIpListResponse) GetItemsOk() (*[]PublicIp, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *PublicIpListResponse) GetItemsOk() (ret PublicIpListResponseGetItemsRetType, ok bool) {
+	return getPublicIpListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *PublicIpListResponse) SetItems(v *[]PublicIp) {
-	o.Items = v
+func (o *PublicIpListResponse) SetItems(v PublicIpListResponseGetItemsRetType) {
+	setPublicIpListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o PublicIpListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getPublicIpListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_public_network.go b/services/iaas/model_public_network.go
index 8f90f2470..4109646a8 100644
--- a/services/iaas/model_public_network.go
+++ b/services/iaas/model_public_network.go
@@ -17,11 +17,32 @@ import (
 // checks if the PublicNetwork type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &PublicNetwork{}
 
+/*
+	types and functions for cidr
+*/
+
+// isNotNullableString
+type PublicNetworkGetCidrAttributeType = *string
+
+func getPublicNetworkGetCidrAttributeTypeOk(arg PublicNetworkGetCidrAttributeType) (ret PublicNetworkGetCidrRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPublicNetworkGetCidrAttributeType(arg *PublicNetworkGetCidrAttributeType, val PublicNetworkGetCidrRetType) {
+	*arg = &val
+}
+
+type PublicNetworkGetCidrArgType = string
+type PublicNetworkGetCidrRetType = string
+
 // PublicNetwork Public network.
 type PublicNetwork struct {
 	// Classless Inter-Domain Routing (CIDR).
 	// REQUIRED
-	Cidr *string `json:"cidr"`
+	Cidr PublicNetworkGetCidrAttributeType `json:"cidr"`
 }
 
 type _PublicNetwork PublicNetwork
@@ -30,9 +51,9 @@ type _PublicNetwork PublicNetwork
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewPublicNetwork(cidr *string) *PublicNetwork {
+func NewPublicNetwork(cidr PublicNetworkGetCidrArgType) *PublicNetwork {
 	this := PublicNetwork{}
-	this.Cidr = cidr
+	setPublicNetworkGetCidrAttributeType(&this.Cidr, cidr)
 	return &this
 }
 
@@ -45,32 +66,27 @@ func NewPublicNetworkWithDefaults() *PublicNetwork {
 }
 
 // GetCidr returns the Cidr field value
-func (o *PublicNetwork) GetCidr() *string {
-	if o == nil || IsNil(o.Cidr) {
-		var ret *string
-		return ret
-	}
-
-	return o.Cidr
+func (o *PublicNetwork) GetCidr() (ret PublicNetworkGetCidrRetType) {
+	ret, _ = o.GetCidrOk()
+	return ret
 }
 
 // GetCidrOk returns a tuple with the Cidr field value
 // and a boolean to check if the value has been set.
-func (o *PublicNetwork) GetCidrOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Cidr, true
+func (o *PublicNetwork) GetCidrOk() (ret PublicNetworkGetCidrRetType, ok bool) {
+	return getPublicNetworkGetCidrAttributeTypeOk(o.Cidr)
 }
 
 // SetCidr sets field value
-func (o *PublicNetwork) SetCidr(v *string) {
-	o.Cidr = v
+func (o *PublicNetwork) SetCidr(v PublicNetworkGetCidrRetType) {
+	setPublicNetworkGetCidrAttributeType(&o.Cidr, v)
 }
 
 func (o PublicNetwork) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["cidr"] = o.Cidr
+	if val, ok := getPublicNetworkGetCidrAttributeTypeOk(o.Cidr); ok {
+		toSerialize["Cidr"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_public_network_list_response.go b/services/iaas/model_public_network_list_response.go
index 824189115..69b1088b7 100644
--- a/services/iaas/model_public_network_list_response.go
+++ b/services/iaas/model_public_network_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the PublicNetworkListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &PublicNetworkListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type PublicNetworkListResponseGetItemsAttributeType = *[]PublicNetwork
+type PublicNetworkListResponseGetItemsArgType = []PublicNetwork
+type PublicNetworkListResponseGetItemsRetType = []PublicNetwork
+
+func getPublicNetworkListResponseGetItemsAttributeTypeOk(arg PublicNetworkListResponseGetItemsAttributeType) (ret PublicNetworkListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setPublicNetworkListResponseGetItemsAttributeType(arg *PublicNetworkListResponseGetItemsAttributeType, val PublicNetworkListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // PublicNetworkListResponse Public network list response.
 type PublicNetworkListResponse struct {
 	// A list of public networks.
 	// REQUIRED
-	Items *[]PublicNetwork `json:"items"`
+	Items PublicNetworkListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _PublicNetworkListResponse PublicNetworkListResponse
@@ -30,9 +50,9 @@ type _PublicNetworkListResponse PublicNetworkListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewPublicNetworkListResponse(items *[]PublicNetwork) *PublicNetworkListResponse {
+func NewPublicNetworkListResponse(items PublicNetworkListResponseGetItemsArgType) *PublicNetworkListResponse {
 	this := PublicNetworkListResponse{}
-	this.Items = items
+	setPublicNetworkListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewPublicNetworkListResponseWithDefaults() *PublicNetworkListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *PublicNetworkListResponse) GetItems() *[]PublicNetwork {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]PublicNetwork
-		return ret
-	}
-
-	return o.Items
+func (o *PublicNetworkListResponse) GetItems() (ret PublicNetworkListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *PublicNetworkListResponse) GetItemsOk() (*[]PublicNetwork, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *PublicNetworkListResponse) GetItemsOk() (ret PublicNetworkListResponseGetItemsRetType, ok bool) {
+	return getPublicNetworkListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *PublicNetworkListResponse) SetItems(v *[]PublicNetwork) {
-	o.Items = v
+func (o *PublicNetworkListResponse) SetItems(v PublicNetworkListResponseGetItemsRetType) {
+	setPublicNetworkListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o PublicNetworkListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getPublicNetworkListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota.go b/services/iaas/model_quota.go
index e0412dc27..8ba4da4ef 100644
--- a/services/iaas/model_quota.go
+++ b/services/iaas/model_quota.go
@@ -17,12 +17,52 @@ import (
 // checks if the Quota type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Quota{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaGetLimitAttributeType = *int64
+type QuotaGetLimitArgType = int64
+type QuotaGetLimitRetType = int64
+
+func getQuotaGetLimitAttributeTypeOk(arg QuotaGetLimitAttributeType) (ret QuotaGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaGetLimitAttributeType(arg *QuotaGetLimitAttributeType, val QuotaGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaGetUsageAttributeType = *int64
+type QuotaGetUsageArgType = int64
+type QuotaGetUsageRetType = int64
+
+func getQuotaGetUsageAttributeTypeOk(arg QuotaGetUsageAttributeType) (ret QuotaGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaGetUsageAttributeType(arg *QuotaGetUsageAttributeType, val QuotaGetUsageRetType) {
+	*arg = &val
+}
+
 // Quota Object that represents a single resource quota.
 type Quota struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaGetUsageAttributeType `json:"usage"`
 }
 
 type _Quota Quota
@@ -31,10 +71,10 @@ type _Quota Quota
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuota(limit *int64, usage *int64) *Quota {
+func NewQuota(limit QuotaGetLimitArgType, usage QuotaGetUsageArgType) *Quota {
 	this := Quota{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaGetLimitAttributeType(&this.Limit, limit)
+	setQuotaGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaWithDefaults() *Quota {
 }
 
 // GetLimit returns the Limit field value
-func (o *Quota) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *Quota) GetLimit() (ret QuotaGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *Quota) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *Quota) GetLimitOk() (ret QuotaGetLimitRetType, ok bool) {
+	return getQuotaGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *Quota) SetLimit(v *int64) {
-	o.Limit = v
+func (o *Quota) SetLimit(v QuotaGetLimitRetType) {
+	setQuotaGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *Quota) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *Quota) GetUsage() (ret QuotaGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *Quota) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *Quota) GetUsageOk() (ret QuotaGetUsageRetType, ok bool) {
+	return getQuotaGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *Quota) SetUsage(v *int64) {
-	o.Usage = v
+func (o *Quota) SetUsage(v QuotaGetUsageRetType) {
+	setQuotaGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o Quota) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list.go b/services/iaas/model_quota_list.go
index cb277f9a4..32b7f4d69 100644
--- a/services/iaas/model_quota_list.go
+++ b/services/iaas/model_quota_list.go
@@ -17,32 +17,272 @@ import (
 // checks if the QuotaList type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaList{}
 
+/*
+	types and functions for backupGigabytes
+*/
+
+// isModel
+type QuotaListGetBackupGigabytesAttributeType = *QuotaListBackupGigabytes
+type QuotaListGetBackupGigabytesArgType = QuotaListBackupGigabytes
+type QuotaListGetBackupGigabytesRetType = QuotaListBackupGigabytes
+
+func getQuotaListGetBackupGigabytesAttributeTypeOk(arg QuotaListGetBackupGigabytesAttributeType) (ret QuotaListGetBackupGigabytesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetBackupGigabytesAttributeType(arg *QuotaListGetBackupGigabytesAttributeType, val QuotaListGetBackupGigabytesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for backups
+*/
+
+// isModel
+type QuotaListGetBackupsAttributeType = *QuotaListBackups
+type QuotaListGetBackupsArgType = QuotaListBackups
+type QuotaListGetBackupsRetType = QuotaListBackups
+
+func getQuotaListGetBackupsAttributeTypeOk(arg QuotaListGetBackupsAttributeType) (ret QuotaListGetBackupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetBackupsAttributeType(arg *QuotaListGetBackupsAttributeType, val QuotaListGetBackupsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for gigabytes
+*/
+
+// isModel
+type QuotaListGetGigabytesAttributeType = *QuotaListGigabytes
+type QuotaListGetGigabytesArgType = QuotaListGigabytes
+type QuotaListGetGigabytesRetType = QuotaListGigabytes
+
+func getQuotaListGetGigabytesAttributeTypeOk(arg QuotaListGetGigabytesAttributeType) (ret QuotaListGetGigabytesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetGigabytesAttributeType(arg *QuotaListGetGigabytesAttributeType, val QuotaListGetGigabytesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networks
+*/
+
+// isModel
+type QuotaListGetNetworksAttributeType = *QuotaListNetworks
+type QuotaListGetNetworksArgType = QuotaListNetworks
+type QuotaListGetNetworksRetType = QuotaListNetworks
+
+func getQuotaListGetNetworksAttributeTypeOk(arg QuotaListGetNetworksAttributeType) (ret QuotaListGetNetworksRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetNetworksAttributeType(arg *QuotaListGetNetworksAttributeType, val QuotaListGetNetworksRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for nics
+*/
+
+// isModel
+type QuotaListGetNicsAttributeType = *QuotaListNics
+type QuotaListGetNicsArgType = QuotaListNics
+type QuotaListGetNicsRetType = QuotaListNics
+
+func getQuotaListGetNicsAttributeTypeOk(arg QuotaListGetNicsAttributeType) (ret QuotaListGetNicsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetNicsAttributeType(arg *QuotaListGetNicsAttributeType, val QuotaListGetNicsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for publicIps
+*/
+
+// isModel
+type QuotaListGetPublicIpsAttributeType = *QuotaListPublicIps
+type QuotaListGetPublicIpsArgType = QuotaListPublicIps
+type QuotaListGetPublicIpsRetType = QuotaListPublicIps
+
+func getQuotaListGetPublicIpsAttributeTypeOk(arg QuotaListGetPublicIpsAttributeType) (ret QuotaListGetPublicIpsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetPublicIpsAttributeType(arg *QuotaListGetPublicIpsAttributeType, val QuotaListGetPublicIpsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for ram
+*/
+
+// isModel
+type QuotaListGetRamAttributeType = *QuotaListRam
+type QuotaListGetRamArgType = QuotaListRam
+type QuotaListGetRamRetType = QuotaListRam
+
+func getQuotaListGetRamAttributeTypeOk(arg QuotaListGetRamAttributeType) (ret QuotaListGetRamRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetRamAttributeType(arg *QuotaListGetRamAttributeType, val QuotaListGetRamRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for securityGroupRules
+*/
+
+// isModel
+type QuotaListGetSecurityGroupRulesAttributeType = *QuotaListSecurityGroupRules
+type QuotaListGetSecurityGroupRulesArgType = QuotaListSecurityGroupRules
+type QuotaListGetSecurityGroupRulesRetType = QuotaListSecurityGroupRules
+
+func getQuotaListGetSecurityGroupRulesAttributeTypeOk(arg QuotaListGetSecurityGroupRulesAttributeType) (ret QuotaListGetSecurityGroupRulesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetSecurityGroupRulesAttributeType(arg *QuotaListGetSecurityGroupRulesAttributeType, val QuotaListGetSecurityGroupRulesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for securityGroups
+*/
+
+// isModel
+type QuotaListGetSecurityGroupsAttributeType = *QuotaListSecurityGroups
+type QuotaListGetSecurityGroupsArgType = QuotaListSecurityGroups
+type QuotaListGetSecurityGroupsRetType = QuotaListSecurityGroups
+
+func getQuotaListGetSecurityGroupsAttributeTypeOk(arg QuotaListGetSecurityGroupsAttributeType) (ret QuotaListGetSecurityGroupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetSecurityGroupsAttributeType(arg *QuotaListGetSecurityGroupsAttributeType, val QuotaListGetSecurityGroupsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for snapshots
+*/
+
+// isModel
+type QuotaListGetSnapshotsAttributeType = *QuotaListSnapshots
+type QuotaListGetSnapshotsArgType = QuotaListSnapshots
+type QuotaListGetSnapshotsRetType = QuotaListSnapshots
+
+func getQuotaListGetSnapshotsAttributeTypeOk(arg QuotaListGetSnapshotsAttributeType) (ret QuotaListGetSnapshotsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetSnapshotsAttributeType(arg *QuotaListGetSnapshotsAttributeType, val QuotaListGetSnapshotsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for vcpu
+*/
+
+// isModel
+type QuotaListGetVcpuAttributeType = *QuotaListVcpu
+type QuotaListGetVcpuArgType = QuotaListVcpu
+type QuotaListGetVcpuRetType = QuotaListVcpu
+
+func getQuotaListGetVcpuAttributeTypeOk(arg QuotaListGetVcpuAttributeType) (ret QuotaListGetVcpuRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetVcpuAttributeType(arg *QuotaListGetVcpuAttributeType, val QuotaListGetVcpuRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for volumes
+*/
+
+// isModel
+type QuotaListGetVolumesAttributeType = *QuotaListVolumes
+type QuotaListGetVolumesArgType = QuotaListVolumes
+type QuotaListGetVolumesRetType = QuotaListVolumes
+
+func getQuotaListGetVolumesAttributeTypeOk(arg QuotaListGetVolumesAttributeType) (ret QuotaListGetVolumesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGetVolumesAttributeType(arg *QuotaListGetVolumesAttributeType, val QuotaListGetVolumesRetType) {
+	*arg = &val
+}
+
 // QuotaList Object that represents the quotas for a project.
 type QuotaList struct {
 	// REQUIRED
-	BackupGigabytes *QuotaListBackupGigabytes `json:"backupGigabytes"`
+	BackupGigabytes QuotaListGetBackupGigabytesAttributeType `json:"backupGigabytes"`
 	// REQUIRED
-	Backups *QuotaListBackups `json:"backups"`
+	Backups QuotaListGetBackupsAttributeType `json:"backups"`
 	// REQUIRED
-	Gigabytes *QuotaListGigabytes `json:"gigabytes"`
+	Gigabytes QuotaListGetGigabytesAttributeType `json:"gigabytes"`
 	// REQUIRED
-	Networks *QuotaListNetworks `json:"networks"`
+	Networks QuotaListGetNetworksAttributeType `json:"networks"`
 	// REQUIRED
-	Nics *QuotaListNics `json:"nics"`
+	Nics QuotaListGetNicsAttributeType `json:"nics"`
 	// REQUIRED
-	PublicIps *QuotaListPublicIps `json:"publicIps"`
+	PublicIps QuotaListGetPublicIpsAttributeType `json:"publicIps"`
 	// REQUIRED
-	Ram *QuotaListRam `json:"ram"`
+	Ram QuotaListGetRamAttributeType `json:"ram"`
 	// REQUIRED
-	SecurityGroupRules *QuotaListSecurityGroupRules `json:"securityGroupRules"`
+	SecurityGroupRules QuotaListGetSecurityGroupRulesAttributeType `json:"securityGroupRules"`
 	// REQUIRED
-	SecurityGroups *QuotaListSecurityGroups `json:"securityGroups"`
+	SecurityGroups QuotaListGetSecurityGroupsAttributeType `json:"securityGroups"`
 	// REQUIRED
-	Snapshots *QuotaListSnapshots `json:"snapshots"`
+	Snapshots QuotaListGetSnapshotsAttributeType `json:"snapshots"`
 	// REQUIRED
-	Vcpu *QuotaListVcpu `json:"vcpu"`
+	Vcpu QuotaListGetVcpuAttributeType `json:"vcpu"`
 	// REQUIRED
-	Volumes *QuotaListVolumes `json:"volumes"`
+	Volumes QuotaListGetVolumesAttributeType `json:"volumes"`
 }
 
 type _QuotaList QuotaList
@@ -51,20 +291,20 @@ type _QuotaList QuotaList
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaList(backupGigabytes *QuotaListBackupGigabytes, backups *QuotaListBackups, gigabytes *QuotaListGigabytes, networks *QuotaListNetworks, nics *QuotaListNics, publicIps *QuotaListPublicIps, ram *QuotaListRam, securityGroupRules *QuotaListSecurityGroupRules, securityGroups *QuotaListSecurityGroups, snapshots *QuotaListSnapshots, vcpu *QuotaListVcpu, volumes *QuotaListVolumes) *QuotaList {
+func NewQuotaList(backupGigabytes QuotaListGetBackupGigabytesArgType, backups QuotaListGetBackupsArgType, gigabytes QuotaListGetGigabytesArgType, networks QuotaListGetNetworksArgType, nics QuotaListGetNicsArgType, publicIps QuotaListGetPublicIpsArgType, ram QuotaListGetRamArgType, securityGroupRules QuotaListGetSecurityGroupRulesArgType, securityGroups QuotaListGetSecurityGroupsArgType, snapshots QuotaListGetSnapshotsArgType, vcpu QuotaListGetVcpuArgType, volumes QuotaListGetVolumesArgType) *QuotaList {
 	this := QuotaList{}
-	this.BackupGigabytes = backupGigabytes
-	this.Backups = backups
-	this.Gigabytes = gigabytes
-	this.Networks = networks
-	this.Nics = nics
-	this.PublicIps = publicIps
-	this.Ram = ram
-	this.SecurityGroupRules = securityGroupRules
-	this.SecurityGroups = securityGroups
-	this.Snapshots = snapshots
-	this.Vcpu = vcpu
-	this.Volumes = volumes
+	setQuotaListGetBackupGigabytesAttributeType(&this.BackupGigabytes, backupGigabytes)
+	setQuotaListGetBackupsAttributeType(&this.Backups, backups)
+	setQuotaListGetGigabytesAttributeType(&this.Gigabytes, gigabytes)
+	setQuotaListGetNetworksAttributeType(&this.Networks, networks)
+	setQuotaListGetNicsAttributeType(&this.Nics, nics)
+	setQuotaListGetPublicIpsAttributeType(&this.PublicIps, publicIps)
+	setQuotaListGetRamAttributeType(&this.Ram, ram)
+	setQuotaListGetSecurityGroupRulesAttributeType(&this.SecurityGroupRules, securityGroupRules)
+	setQuotaListGetSecurityGroupsAttributeType(&this.SecurityGroups, securityGroups)
+	setQuotaListGetSnapshotsAttributeType(&this.Snapshots, snapshots)
+	setQuotaListGetVcpuAttributeType(&this.Vcpu, vcpu)
+	setQuotaListGetVolumesAttributeType(&this.Volumes, volumes)
 	return &this
 }
 
@@ -77,307 +317,247 @@ func NewQuotaListWithDefaults() *QuotaList {
 }
 
 // GetBackupGigabytes returns the BackupGigabytes field value
-func (o *QuotaList) GetBackupGigabytes() *QuotaListBackupGigabytes {
-	if o == nil || IsNil(o.BackupGigabytes) {
-		var ret *QuotaListBackupGigabytes
-		return ret
-	}
-
-	return o.BackupGigabytes
+func (o *QuotaList) GetBackupGigabytes() (ret QuotaListGetBackupGigabytesRetType) {
+	ret, _ = o.GetBackupGigabytesOk()
+	return ret
 }
 
 // GetBackupGigabytesOk returns a tuple with the BackupGigabytes field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetBackupGigabytesOk() (*QuotaListBackupGigabytes, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.BackupGigabytes, true
+func (o *QuotaList) GetBackupGigabytesOk() (ret QuotaListGetBackupGigabytesRetType, ok bool) {
+	return getQuotaListGetBackupGigabytesAttributeTypeOk(o.BackupGigabytes)
 }
 
 // SetBackupGigabytes sets field value
-func (o *QuotaList) SetBackupGigabytes(v *QuotaListBackupGigabytes) {
-	o.BackupGigabytes = v
+func (o *QuotaList) SetBackupGigabytes(v QuotaListGetBackupGigabytesRetType) {
+	setQuotaListGetBackupGigabytesAttributeType(&o.BackupGigabytes, v)
 }
 
 // GetBackups returns the Backups field value
-func (o *QuotaList) GetBackups() *QuotaListBackups {
-	if o == nil || IsNil(o.Backups) {
-		var ret *QuotaListBackups
-		return ret
-	}
-
-	return o.Backups
+func (o *QuotaList) GetBackups() (ret QuotaListGetBackupsRetType) {
+	ret, _ = o.GetBackupsOk()
+	return ret
 }
 
 // GetBackupsOk returns a tuple with the Backups field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetBackupsOk() (*QuotaListBackups, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Backups, true
+func (o *QuotaList) GetBackupsOk() (ret QuotaListGetBackupsRetType, ok bool) {
+	return getQuotaListGetBackupsAttributeTypeOk(o.Backups)
 }
 
 // SetBackups sets field value
-func (o *QuotaList) SetBackups(v *QuotaListBackups) {
-	o.Backups = v
+func (o *QuotaList) SetBackups(v QuotaListGetBackupsRetType) {
+	setQuotaListGetBackupsAttributeType(&o.Backups, v)
 }
 
 // GetGigabytes returns the Gigabytes field value
-func (o *QuotaList) GetGigabytes() *QuotaListGigabytes {
-	if o == nil || IsNil(o.Gigabytes) {
-		var ret *QuotaListGigabytes
-		return ret
-	}
-
-	return o.Gigabytes
+func (o *QuotaList) GetGigabytes() (ret QuotaListGetGigabytesRetType) {
+	ret, _ = o.GetGigabytesOk()
+	return ret
 }
 
 // GetGigabytesOk returns a tuple with the Gigabytes field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetGigabytesOk() (*QuotaListGigabytes, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Gigabytes, true
+func (o *QuotaList) GetGigabytesOk() (ret QuotaListGetGigabytesRetType, ok bool) {
+	return getQuotaListGetGigabytesAttributeTypeOk(o.Gigabytes)
 }
 
 // SetGigabytes sets field value
-func (o *QuotaList) SetGigabytes(v *QuotaListGigabytes) {
-	o.Gigabytes = v
+func (o *QuotaList) SetGigabytes(v QuotaListGetGigabytesRetType) {
+	setQuotaListGetGigabytesAttributeType(&o.Gigabytes, v)
 }
 
 // GetNetworks returns the Networks field value
-func (o *QuotaList) GetNetworks() *QuotaListNetworks {
-	if o == nil || IsNil(o.Networks) {
-		var ret *QuotaListNetworks
-		return ret
-	}
-
-	return o.Networks
+func (o *QuotaList) GetNetworks() (ret QuotaListGetNetworksRetType) {
+	ret, _ = o.GetNetworksOk()
+	return ret
 }
 
 // GetNetworksOk returns a tuple with the Networks field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetNetworksOk() (*QuotaListNetworks, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Networks, true
+func (o *QuotaList) GetNetworksOk() (ret QuotaListGetNetworksRetType, ok bool) {
+	return getQuotaListGetNetworksAttributeTypeOk(o.Networks)
 }
 
 // SetNetworks sets field value
-func (o *QuotaList) SetNetworks(v *QuotaListNetworks) {
-	o.Networks = v
+func (o *QuotaList) SetNetworks(v QuotaListGetNetworksRetType) {
+	setQuotaListGetNetworksAttributeType(&o.Networks, v)
 }
 
 // GetNics returns the Nics field value
-func (o *QuotaList) GetNics() *QuotaListNics {
-	if o == nil || IsNil(o.Nics) {
-		var ret *QuotaListNics
-		return ret
-	}
-
-	return o.Nics
+func (o *QuotaList) GetNics() (ret QuotaListGetNicsRetType) {
+	ret, _ = o.GetNicsOk()
+	return ret
 }
 
 // GetNicsOk returns a tuple with the Nics field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetNicsOk() (*QuotaListNics, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Nics, true
+func (o *QuotaList) GetNicsOk() (ret QuotaListGetNicsRetType, ok bool) {
+	return getQuotaListGetNicsAttributeTypeOk(o.Nics)
 }
 
 // SetNics sets field value
-func (o *QuotaList) SetNics(v *QuotaListNics) {
-	o.Nics = v
+func (o *QuotaList) SetNics(v QuotaListGetNicsRetType) {
+	setQuotaListGetNicsAttributeType(&o.Nics, v)
 }
 
 // GetPublicIps returns the PublicIps field value
-func (o *QuotaList) GetPublicIps() *QuotaListPublicIps {
-	if o == nil || IsNil(o.PublicIps) {
-		var ret *QuotaListPublicIps
-		return ret
-	}
-
-	return o.PublicIps
+func (o *QuotaList) GetPublicIps() (ret QuotaListGetPublicIpsRetType) {
+	ret, _ = o.GetPublicIpsOk()
+	return ret
 }
 
 // GetPublicIpsOk returns a tuple with the PublicIps field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetPublicIpsOk() (*QuotaListPublicIps, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.PublicIps, true
+func (o *QuotaList) GetPublicIpsOk() (ret QuotaListGetPublicIpsRetType, ok bool) {
+	return getQuotaListGetPublicIpsAttributeTypeOk(o.PublicIps)
 }
 
 // SetPublicIps sets field value
-func (o *QuotaList) SetPublicIps(v *QuotaListPublicIps) {
-	o.PublicIps = v
+func (o *QuotaList) SetPublicIps(v QuotaListGetPublicIpsRetType) {
+	setQuotaListGetPublicIpsAttributeType(&o.PublicIps, v)
 }
 
 // GetRam returns the Ram field value
-func (o *QuotaList) GetRam() *QuotaListRam {
-	if o == nil || IsNil(o.Ram) {
-		var ret *QuotaListRam
-		return ret
-	}
-
-	return o.Ram
+func (o *QuotaList) GetRam() (ret QuotaListGetRamRetType) {
+	ret, _ = o.GetRamOk()
+	return ret
 }
 
 // GetRamOk returns a tuple with the Ram field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetRamOk() (*QuotaListRam, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Ram, true
+func (o *QuotaList) GetRamOk() (ret QuotaListGetRamRetType, ok bool) {
+	return getQuotaListGetRamAttributeTypeOk(o.Ram)
 }
 
 // SetRam sets field value
-func (o *QuotaList) SetRam(v *QuotaListRam) {
-	o.Ram = v
+func (o *QuotaList) SetRam(v QuotaListGetRamRetType) {
+	setQuotaListGetRamAttributeType(&o.Ram, v)
 }
 
 // GetSecurityGroupRules returns the SecurityGroupRules field value
-func (o *QuotaList) GetSecurityGroupRules() *QuotaListSecurityGroupRules {
-	if o == nil || IsNil(o.SecurityGroupRules) {
-		var ret *QuotaListSecurityGroupRules
-		return ret
-	}
-
-	return o.SecurityGroupRules
+func (o *QuotaList) GetSecurityGroupRules() (ret QuotaListGetSecurityGroupRulesRetType) {
+	ret, _ = o.GetSecurityGroupRulesOk()
+	return ret
 }
 
 // GetSecurityGroupRulesOk returns a tuple with the SecurityGroupRules field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetSecurityGroupRulesOk() (*QuotaListSecurityGroupRules, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.SecurityGroupRules, true
+func (o *QuotaList) GetSecurityGroupRulesOk() (ret QuotaListGetSecurityGroupRulesRetType, ok bool) {
+	return getQuotaListGetSecurityGroupRulesAttributeTypeOk(o.SecurityGroupRules)
 }
 
 // SetSecurityGroupRules sets field value
-func (o *QuotaList) SetSecurityGroupRules(v *QuotaListSecurityGroupRules) {
-	o.SecurityGroupRules = v
+func (o *QuotaList) SetSecurityGroupRules(v QuotaListGetSecurityGroupRulesRetType) {
+	setQuotaListGetSecurityGroupRulesAttributeType(&o.SecurityGroupRules, v)
 }
 
 // GetSecurityGroups returns the SecurityGroups field value
-func (o *QuotaList) GetSecurityGroups() *QuotaListSecurityGroups {
-	if o == nil || IsNil(o.SecurityGroups) {
-		var ret *QuotaListSecurityGroups
-		return ret
-	}
-
-	return o.SecurityGroups
+func (o *QuotaList) GetSecurityGroups() (ret QuotaListGetSecurityGroupsRetType) {
+	ret, _ = o.GetSecurityGroupsOk()
+	return ret
 }
 
 // GetSecurityGroupsOk returns a tuple with the SecurityGroups field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetSecurityGroupsOk() (*QuotaListSecurityGroups, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.SecurityGroups, true
+func (o *QuotaList) GetSecurityGroupsOk() (ret QuotaListGetSecurityGroupsRetType, ok bool) {
+	return getQuotaListGetSecurityGroupsAttributeTypeOk(o.SecurityGroups)
 }
 
 // SetSecurityGroups sets field value
-func (o *QuotaList) SetSecurityGroups(v *QuotaListSecurityGroups) {
-	o.SecurityGroups = v
+func (o *QuotaList) SetSecurityGroups(v QuotaListGetSecurityGroupsRetType) {
+	setQuotaListGetSecurityGroupsAttributeType(&o.SecurityGroups, v)
 }
 
 // GetSnapshots returns the Snapshots field value
-func (o *QuotaList) GetSnapshots() *QuotaListSnapshots {
-	if o == nil || IsNil(o.Snapshots) {
-		var ret *QuotaListSnapshots
-		return ret
-	}
-
-	return o.Snapshots
+func (o *QuotaList) GetSnapshots() (ret QuotaListGetSnapshotsRetType) {
+	ret, _ = o.GetSnapshotsOk()
+	return ret
 }
 
 // GetSnapshotsOk returns a tuple with the Snapshots field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetSnapshotsOk() (*QuotaListSnapshots, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Snapshots, true
+func (o *QuotaList) GetSnapshotsOk() (ret QuotaListGetSnapshotsRetType, ok bool) {
+	return getQuotaListGetSnapshotsAttributeTypeOk(o.Snapshots)
 }
 
 // SetSnapshots sets field value
-func (o *QuotaList) SetSnapshots(v *QuotaListSnapshots) {
-	o.Snapshots = v
+func (o *QuotaList) SetSnapshots(v QuotaListGetSnapshotsRetType) {
+	setQuotaListGetSnapshotsAttributeType(&o.Snapshots, v)
 }
 
 // GetVcpu returns the Vcpu field value
-func (o *QuotaList) GetVcpu() *QuotaListVcpu {
-	if o == nil || IsNil(o.Vcpu) {
-		var ret *QuotaListVcpu
-		return ret
-	}
-
-	return o.Vcpu
+func (o *QuotaList) GetVcpu() (ret QuotaListGetVcpuRetType) {
+	ret, _ = o.GetVcpuOk()
+	return ret
 }
 
 // GetVcpuOk returns a tuple with the Vcpu field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetVcpuOk() (*QuotaListVcpu, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Vcpu, true
+func (o *QuotaList) GetVcpuOk() (ret QuotaListGetVcpuRetType, ok bool) {
+	return getQuotaListGetVcpuAttributeTypeOk(o.Vcpu)
 }
 
 // SetVcpu sets field value
-func (o *QuotaList) SetVcpu(v *QuotaListVcpu) {
-	o.Vcpu = v
+func (o *QuotaList) SetVcpu(v QuotaListGetVcpuRetType) {
+	setQuotaListGetVcpuAttributeType(&o.Vcpu, v)
 }
 
 // GetVolumes returns the Volumes field value
-func (o *QuotaList) GetVolumes() *QuotaListVolumes {
-	if o == nil || IsNil(o.Volumes) {
-		var ret *QuotaListVolumes
-		return ret
-	}
-
-	return o.Volumes
+func (o *QuotaList) GetVolumes() (ret QuotaListGetVolumesRetType) {
+	ret, _ = o.GetVolumesOk()
+	return ret
 }
 
 // GetVolumesOk returns a tuple with the Volumes field value
 // and a boolean to check if the value has been set.
-func (o *QuotaList) GetVolumesOk() (*QuotaListVolumes, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Volumes, true
+func (o *QuotaList) GetVolumesOk() (ret QuotaListGetVolumesRetType, ok bool) {
+	return getQuotaListGetVolumesAttributeTypeOk(o.Volumes)
 }
 
 // SetVolumes sets field value
-func (o *QuotaList) SetVolumes(v *QuotaListVolumes) {
-	o.Volumes = v
+func (o *QuotaList) SetVolumes(v QuotaListGetVolumesRetType) {
+	setQuotaListGetVolumesAttributeType(&o.Volumes, v)
 }
 
 func (o QuotaList) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["backupGigabytes"] = o.BackupGigabytes
-	toSerialize["backups"] = o.Backups
-	toSerialize["gigabytes"] = o.Gigabytes
-	toSerialize["networks"] = o.Networks
-	toSerialize["nics"] = o.Nics
-	toSerialize["publicIps"] = o.PublicIps
-	toSerialize["ram"] = o.Ram
-	toSerialize["securityGroupRules"] = o.SecurityGroupRules
-	toSerialize["securityGroups"] = o.SecurityGroups
-	toSerialize["snapshots"] = o.Snapshots
-	toSerialize["vcpu"] = o.Vcpu
-	toSerialize["volumes"] = o.Volumes
+	if val, ok := getQuotaListGetBackupGigabytesAttributeTypeOk(o.BackupGigabytes); ok {
+		toSerialize["BackupGigabytes"] = val
+	}
+	if val, ok := getQuotaListGetBackupsAttributeTypeOk(o.Backups); ok {
+		toSerialize["Backups"] = val
+	}
+	if val, ok := getQuotaListGetGigabytesAttributeTypeOk(o.Gigabytes); ok {
+		toSerialize["Gigabytes"] = val
+	}
+	if val, ok := getQuotaListGetNetworksAttributeTypeOk(o.Networks); ok {
+		toSerialize["Networks"] = val
+	}
+	if val, ok := getQuotaListGetNicsAttributeTypeOk(o.Nics); ok {
+		toSerialize["Nics"] = val
+	}
+	if val, ok := getQuotaListGetPublicIpsAttributeTypeOk(o.PublicIps); ok {
+		toSerialize["PublicIps"] = val
+	}
+	if val, ok := getQuotaListGetRamAttributeTypeOk(o.Ram); ok {
+		toSerialize["Ram"] = val
+	}
+	if val, ok := getQuotaListGetSecurityGroupRulesAttributeTypeOk(o.SecurityGroupRules); ok {
+		toSerialize["SecurityGroupRules"] = val
+	}
+	if val, ok := getQuotaListGetSecurityGroupsAttributeTypeOk(o.SecurityGroups); ok {
+		toSerialize["SecurityGroups"] = val
+	}
+	if val, ok := getQuotaListGetSnapshotsAttributeTypeOk(o.Snapshots); ok {
+		toSerialize["Snapshots"] = val
+	}
+	if val, ok := getQuotaListGetVcpuAttributeTypeOk(o.Vcpu); ok {
+		toSerialize["Vcpu"] = val
+	}
+	if val, ok := getQuotaListGetVolumesAttributeTypeOk(o.Volumes); ok {
+		toSerialize["Volumes"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_backup_gigabytes.go b/services/iaas/model_quota_list_backup_gigabytes.go
index 533bd7390..af1c79430 100644
--- a/services/iaas/model_quota_list_backup_gigabytes.go
+++ b/services/iaas/model_quota_list_backup_gigabytes.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListBackupGigabytes type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListBackupGigabytes{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListBackupGigabytesGetLimitAttributeType = *int64
+type QuotaListBackupGigabytesGetLimitArgType = int64
+type QuotaListBackupGigabytesGetLimitRetType = int64
+
+func getQuotaListBackupGigabytesGetLimitAttributeTypeOk(arg QuotaListBackupGigabytesGetLimitAttributeType) (ret QuotaListBackupGigabytesGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListBackupGigabytesGetLimitAttributeType(arg *QuotaListBackupGigabytesGetLimitAttributeType, val QuotaListBackupGigabytesGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListBackupGigabytesGetUsageAttributeType = *int64
+type QuotaListBackupGigabytesGetUsageArgType = int64
+type QuotaListBackupGigabytesGetUsageRetType = int64
+
+func getQuotaListBackupGigabytesGetUsageAttributeTypeOk(arg QuotaListBackupGigabytesGetUsageAttributeType) (ret QuotaListBackupGigabytesGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListBackupGigabytesGetUsageAttributeType(arg *QuotaListBackupGigabytesGetUsageAttributeType, val QuotaListBackupGigabytesGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListBackupGigabytes Total size in GiB of backups.
 type QuotaListBackupGigabytes struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListBackupGigabytesGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListBackupGigabytesGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListBackupGigabytes QuotaListBackupGigabytes
@@ -31,10 +71,10 @@ type _QuotaListBackupGigabytes QuotaListBackupGigabytes
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListBackupGigabytes(limit *int64, usage *int64) *QuotaListBackupGigabytes {
+func NewQuotaListBackupGigabytes(limit QuotaListBackupGigabytesGetLimitArgType, usage QuotaListBackupGigabytesGetUsageArgType) *QuotaListBackupGigabytes {
 	this := QuotaListBackupGigabytes{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListBackupGigabytesGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListBackupGigabytesGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListBackupGigabytesWithDefaults() *QuotaListBackupGigabytes {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListBackupGigabytes) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListBackupGigabytes) GetLimit() (ret QuotaListBackupGigabytesGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListBackupGigabytes) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListBackupGigabytes) GetLimitOk() (ret QuotaListBackupGigabytesGetLimitRetType, ok bool) {
+	return getQuotaListBackupGigabytesGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListBackupGigabytes) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListBackupGigabytes) SetLimit(v QuotaListBackupGigabytesGetLimitRetType) {
+	setQuotaListBackupGigabytesGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListBackupGigabytes) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListBackupGigabytes) GetUsage() (ret QuotaListBackupGigabytesGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListBackupGigabytes) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListBackupGigabytes) GetUsageOk() (ret QuotaListBackupGigabytesGetUsageRetType, ok bool) {
+	return getQuotaListBackupGigabytesGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListBackupGigabytes) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListBackupGigabytes) SetUsage(v QuotaListBackupGigabytesGetUsageRetType) {
+	setQuotaListBackupGigabytesGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListBackupGigabytes) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListBackupGigabytesGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListBackupGigabytesGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_backups.go b/services/iaas/model_quota_list_backups.go
index b2d12d61a..94d47a746 100644
--- a/services/iaas/model_quota_list_backups.go
+++ b/services/iaas/model_quota_list_backups.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListBackups type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListBackups{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListBackupsGetLimitAttributeType = *int64
+type QuotaListBackupsGetLimitArgType = int64
+type QuotaListBackupsGetLimitRetType = int64
+
+func getQuotaListBackupsGetLimitAttributeTypeOk(arg QuotaListBackupsGetLimitAttributeType) (ret QuotaListBackupsGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListBackupsGetLimitAttributeType(arg *QuotaListBackupsGetLimitAttributeType, val QuotaListBackupsGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListBackupsGetUsageAttributeType = *int64
+type QuotaListBackupsGetUsageArgType = int64
+type QuotaListBackupsGetUsageRetType = int64
+
+func getQuotaListBackupsGetUsageAttributeTypeOk(arg QuotaListBackupsGetUsageAttributeType) (ret QuotaListBackupsGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListBackupsGetUsageAttributeType(arg *QuotaListBackupsGetUsageAttributeType, val QuotaListBackupsGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListBackups Number of backups.
 type QuotaListBackups struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListBackupsGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListBackupsGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListBackups QuotaListBackups
@@ -31,10 +71,10 @@ type _QuotaListBackups QuotaListBackups
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListBackups(limit *int64, usage *int64) *QuotaListBackups {
+func NewQuotaListBackups(limit QuotaListBackupsGetLimitArgType, usage QuotaListBackupsGetUsageArgType) *QuotaListBackups {
 	this := QuotaListBackups{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListBackupsGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListBackupsGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListBackupsWithDefaults() *QuotaListBackups {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListBackups) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListBackups) GetLimit() (ret QuotaListBackupsGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListBackups) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListBackups) GetLimitOk() (ret QuotaListBackupsGetLimitRetType, ok bool) {
+	return getQuotaListBackupsGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListBackups) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListBackups) SetLimit(v QuotaListBackupsGetLimitRetType) {
+	setQuotaListBackupsGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListBackups) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListBackups) GetUsage() (ret QuotaListBackupsGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListBackups) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListBackups) GetUsageOk() (ret QuotaListBackupsGetUsageRetType, ok bool) {
+	return getQuotaListBackupsGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListBackups) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListBackups) SetUsage(v QuotaListBackupsGetUsageRetType) {
+	setQuotaListBackupsGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListBackups) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListBackupsGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListBackupsGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_gigabytes.go b/services/iaas/model_quota_list_gigabytes.go
index ee40de718..1cc1cc3af 100644
--- a/services/iaas/model_quota_list_gigabytes.go
+++ b/services/iaas/model_quota_list_gigabytes.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListGigabytes type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListGigabytes{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListGigabytesGetLimitAttributeType = *int64
+type QuotaListGigabytesGetLimitArgType = int64
+type QuotaListGigabytesGetLimitRetType = int64
+
+func getQuotaListGigabytesGetLimitAttributeTypeOk(arg QuotaListGigabytesGetLimitAttributeType) (ret QuotaListGigabytesGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGigabytesGetLimitAttributeType(arg *QuotaListGigabytesGetLimitAttributeType, val QuotaListGigabytesGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListGigabytesGetUsageAttributeType = *int64
+type QuotaListGigabytesGetUsageArgType = int64
+type QuotaListGigabytesGetUsageRetType = int64
+
+func getQuotaListGigabytesGetUsageAttributeTypeOk(arg QuotaListGigabytesGetUsageAttributeType) (ret QuotaListGigabytesGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListGigabytesGetUsageAttributeType(arg *QuotaListGigabytesGetUsageAttributeType, val QuotaListGigabytesGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListGigabytes Total size in GiB of volumes and snapshots.
 type QuotaListGigabytes struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListGigabytesGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListGigabytesGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListGigabytes QuotaListGigabytes
@@ -31,10 +71,10 @@ type _QuotaListGigabytes QuotaListGigabytes
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListGigabytes(limit *int64, usage *int64) *QuotaListGigabytes {
+func NewQuotaListGigabytes(limit QuotaListGigabytesGetLimitArgType, usage QuotaListGigabytesGetUsageArgType) *QuotaListGigabytes {
 	this := QuotaListGigabytes{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListGigabytesGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListGigabytesGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListGigabytesWithDefaults() *QuotaListGigabytes {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListGigabytes) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListGigabytes) GetLimit() (ret QuotaListGigabytesGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListGigabytes) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListGigabytes) GetLimitOk() (ret QuotaListGigabytesGetLimitRetType, ok bool) {
+	return getQuotaListGigabytesGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListGigabytes) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListGigabytes) SetLimit(v QuotaListGigabytesGetLimitRetType) {
+	setQuotaListGigabytesGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListGigabytes) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListGigabytes) GetUsage() (ret QuotaListGigabytesGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListGigabytes) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListGigabytes) GetUsageOk() (ret QuotaListGigabytesGetUsageRetType, ok bool) {
+	return getQuotaListGigabytesGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListGigabytes) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListGigabytes) SetUsage(v QuotaListGigabytesGetUsageRetType) {
+	setQuotaListGigabytesGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListGigabytes) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListGigabytesGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListGigabytesGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_networks.go b/services/iaas/model_quota_list_networks.go
index 664c40676..268d5a980 100644
--- a/services/iaas/model_quota_list_networks.go
+++ b/services/iaas/model_quota_list_networks.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListNetworks type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListNetworks{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListNetworksGetLimitAttributeType = *int64
+type QuotaListNetworksGetLimitArgType = int64
+type QuotaListNetworksGetLimitRetType = int64
+
+func getQuotaListNetworksGetLimitAttributeTypeOk(arg QuotaListNetworksGetLimitAttributeType) (ret QuotaListNetworksGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListNetworksGetLimitAttributeType(arg *QuotaListNetworksGetLimitAttributeType, val QuotaListNetworksGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListNetworksGetUsageAttributeType = *int64
+type QuotaListNetworksGetUsageArgType = int64
+type QuotaListNetworksGetUsageRetType = int64
+
+func getQuotaListNetworksGetUsageAttributeTypeOk(arg QuotaListNetworksGetUsageAttributeType) (ret QuotaListNetworksGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListNetworksGetUsageAttributeType(arg *QuotaListNetworksGetUsageAttributeType, val QuotaListNetworksGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListNetworks Number of networks.
 type QuotaListNetworks struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListNetworksGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListNetworksGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListNetworks QuotaListNetworks
@@ -31,10 +71,10 @@ type _QuotaListNetworks QuotaListNetworks
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListNetworks(limit *int64, usage *int64) *QuotaListNetworks {
+func NewQuotaListNetworks(limit QuotaListNetworksGetLimitArgType, usage QuotaListNetworksGetUsageArgType) *QuotaListNetworks {
 	this := QuotaListNetworks{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListNetworksGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListNetworksGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListNetworksWithDefaults() *QuotaListNetworks {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListNetworks) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListNetworks) GetLimit() (ret QuotaListNetworksGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListNetworks) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListNetworks) GetLimitOk() (ret QuotaListNetworksGetLimitRetType, ok bool) {
+	return getQuotaListNetworksGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListNetworks) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListNetworks) SetLimit(v QuotaListNetworksGetLimitRetType) {
+	setQuotaListNetworksGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListNetworks) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListNetworks) GetUsage() (ret QuotaListNetworksGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListNetworks) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListNetworks) GetUsageOk() (ret QuotaListNetworksGetUsageRetType, ok bool) {
+	return getQuotaListNetworksGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListNetworks) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListNetworks) SetUsage(v QuotaListNetworksGetUsageRetType) {
+	setQuotaListNetworksGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListNetworks) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListNetworksGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListNetworksGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_nics.go b/services/iaas/model_quota_list_nics.go
index 21114db78..20b966445 100644
--- a/services/iaas/model_quota_list_nics.go
+++ b/services/iaas/model_quota_list_nics.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListNics type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListNics{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListNicsGetLimitAttributeType = *int64
+type QuotaListNicsGetLimitArgType = int64
+type QuotaListNicsGetLimitRetType = int64
+
+func getQuotaListNicsGetLimitAttributeTypeOk(arg QuotaListNicsGetLimitAttributeType) (ret QuotaListNicsGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListNicsGetLimitAttributeType(arg *QuotaListNicsGetLimitAttributeType, val QuotaListNicsGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListNicsGetUsageAttributeType = *int64
+type QuotaListNicsGetUsageArgType = int64
+type QuotaListNicsGetUsageRetType = int64
+
+func getQuotaListNicsGetUsageAttributeTypeOk(arg QuotaListNicsGetUsageAttributeType) (ret QuotaListNicsGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListNicsGetUsageAttributeType(arg *QuotaListNicsGetUsageAttributeType, val QuotaListNicsGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListNics Number of network interfaces.
 type QuotaListNics struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListNicsGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListNicsGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListNics QuotaListNics
@@ -31,10 +71,10 @@ type _QuotaListNics QuotaListNics
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListNics(limit *int64, usage *int64) *QuotaListNics {
+func NewQuotaListNics(limit QuotaListNicsGetLimitArgType, usage QuotaListNicsGetUsageArgType) *QuotaListNics {
 	this := QuotaListNics{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListNicsGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListNicsGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListNicsWithDefaults() *QuotaListNics {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListNics) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListNics) GetLimit() (ret QuotaListNicsGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListNics) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListNics) GetLimitOk() (ret QuotaListNicsGetLimitRetType, ok bool) {
+	return getQuotaListNicsGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListNics) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListNics) SetLimit(v QuotaListNicsGetLimitRetType) {
+	setQuotaListNicsGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListNics) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListNics) GetUsage() (ret QuotaListNicsGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListNics) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListNics) GetUsageOk() (ret QuotaListNicsGetUsageRetType, ok bool) {
+	return getQuotaListNicsGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListNics) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListNics) SetUsage(v QuotaListNicsGetUsageRetType) {
+	setQuotaListNicsGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListNics) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListNicsGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListNicsGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_public_ips.go b/services/iaas/model_quota_list_public_ips.go
index 345a33f52..ea7448376 100644
--- a/services/iaas/model_quota_list_public_ips.go
+++ b/services/iaas/model_quota_list_public_ips.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListPublicIps type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListPublicIps{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListPublicIpsGetLimitAttributeType = *int64
+type QuotaListPublicIpsGetLimitArgType = int64
+type QuotaListPublicIpsGetLimitRetType = int64
+
+func getQuotaListPublicIpsGetLimitAttributeTypeOk(arg QuotaListPublicIpsGetLimitAttributeType) (ret QuotaListPublicIpsGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListPublicIpsGetLimitAttributeType(arg *QuotaListPublicIpsGetLimitAttributeType, val QuotaListPublicIpsGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListPublicIpsGetUsageAttributeType = *int64
+type QuotaListPublicIpsGetUsageArgType = int64
+type QuotaListPublicIpsGetUsageRetType = int64
+
+func getQuotaListPublicIpsGetUsageAttributeTypeOk(arg QuotaListPublicIpsGetUsageAttributeType) (ret QuotaListPublicIpsGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListPublicIpsGetUsageAttributeType(arg *QuotaListPublicIpsGetUsageAttributeType, val QuotaListPublicIpsGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListPublicIps Number of public IP addresses.
 type QuotaListPublicIps struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListPublicIpsGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListPublicIpsGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListPublicIps QuotaListPublicIps
@@ -31,10 +71,10 @@ type _QuotaListPublicIps QuotaListPublicIps
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListPublicIps(limit *int64, usage *int64) *QuotaListPublicIps {
+func NewQuotaListPublicIps(limit QuotaListPublicIpsGetLimitArgType, usage QuotaListPublicIpsGetUsageArgType) *QuotaListPublicIps {
 	this := QuotaListPublicIps{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListPublicIpsGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListPublicIpsGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListPublicIpsWithDefaults() *QuotaListPublicIps {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListPublicIps) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListPublicIps) GetLimit() (ret QuotaListPublicIpsGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListPublicIps) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListPublicIps) GetLimitOk() (ret QuotaListPublicIpsGetLimitRetType, ok bool) {
+	return getQuotaListPublicIpsGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListPublicIps) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListPublicIps) SetLimit(v QuotaListPublicIpsGetLimitRetType) {
+	setQuotaListPublicIpsGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListPublicIps) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListPublicIps) GetUsage() (ret QuotaListPublicIpsGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListPublicIps) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListPublicIps) GetUsageOk() (ret QuotaListPublicIpsGetUsageRetType, ok bool) {
+	return getQuotaListPublicIpsGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListPublicIps) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListPublicIps) SetUsage(v QuotaListPublicIpsGetUsageRetType) {
+	setQuotaListPublicIpsGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListPublicIps) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListPublicIpsGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListPublicIpsGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_ram.go b/services/iaas/model_quota_list_ram.go
index 896357695..349b3553d 100644
--- a/services/iaas/model_quota_list_ram.go
+++ b/services/iaas/model_quota_list_ram.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListRam type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListRam{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListRamGetLimitAttributeType = *int64
+type QuotaListRamGetLimitArgType = int64
+type QuotaListRamGetLimitRetType = int64
+
+func getQuotaListRamGetLimitAttributeTypeOk(arg QuotaListRamGetLimitAttributeType) (ret QuotaListRamGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListRamGetLimitAttributeType(arg *QuotaListRamGetLimitAttributeType, val QuotaListRamGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListRamGetUsageAttributeType = *int64
+type QuotaListRamGetUsageArgType = int64
+type QuotaListRamGetUsageRetType = int64
+
+func getQuotaListRamGetUsageAttributeTypeOk(arg QuotaListRamGetUsageAttributeType) (ret QuotaListRamGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListRamGetUsageAttributeType(arg *QuotaListRamGetUsageAttributeType, val QuotaListRamGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListRam Amount of server RAM in MiB.
 type QuotaListRam struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListRamGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListRamGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListRam QuotaListRam
@@ -31,10 +71,10 @@ type _QuotaListRam QuotaListRam
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListRam(limit *int64, usage *int64) *QuotaListRam {
+func NewQuotaListRam(limit QuotaListRamGetLimitArgType, usage QuotaListRamGetUsageArgType) *QuotaListRam {
 	this := QuotaListRam{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListRamGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListRamGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListRamWithDefaults() *QuotaListRam {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListRam) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListRam) GetLimit() (ret QuotaListRamGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListRam) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListRam) GetLimitOk() (ret QuotaListRamGetLimitRetType, ok bool) {
+	return getQuotaListRamGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListRam) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListRam) SetLimit(v QuotaListRamGetLimitRetType) {
+	setQuotaListRamGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListRam) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListRam) GetUsage() (ret QuotaListRamGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListRam) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListRam) GetUsageOk() (ret QuotaListRamGetUsageRetType, ok bool) {
+	return getQuotaListRamGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListRam) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListRam) SetUsage(v QuotaListRamGetUsageRetType) {
+	setQuotaListRamGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListRam) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListRamGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListRamGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_response.go b/services/iaas/model_quota_list_response.go
index d1b047ff7..80bbd08a9 100644
--- a/services/iaas/model_quota_list_response.go
+++ b/services/iaas/model_quota_list_response.go
@@ -17,10 +17,30 @@ import (
 // checks if the QuotaListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListResponse{}
 
+/*
+	types and functions for quotas
+*/
+
+// isModel
+type QuotaListResponseGetQuotasAttributeType = *QuotaList
+type QuotaListResponseGetQuotasArgType = QuotaList
+type QuotaListResponseGetQuotasRetType = QuotaList
+
+func getQuotaListResponseGetQuotasAttributeTypeOk(arg QuotaListResponseGetQuotasAttributeType) (ret QuotaListResponseGetQuotasRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListResponseGetQuotasAttributeType(arg *QuotaListResponseGetQuotasAttributeType, val QuotaListResponseGetQuotasRetType) {
+	*arg = &val
+}
+
 // QuotaListResponse Quotas list response.
 type QuotaListResponse struct {
 	// REQUIRED
-	Quotas *QuotaList `json:"quotas"`
+	Quotas QuotaListResponseGetQuotasAttributeType `json:"quotas"`
 }
 
 type _QuotaListResponse QuotaListResponse
@@ -29,9 +49,9 @@ type _QuotaListResponse QuotaListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListResponse(quotas *QuotaList) *QuotaListResponse {
+func NewQuotaListResponse(quotas QuotaListResponseGetQuotasArgType) *QuotaListResponse {
 	this := QuotaListResponse{}
-	this.Quotas = quotas
+	setQuotaListResponseGetQuotasAttributeType(&this.Quotas, quotas)
 	return &this
 }
 
@@ -44,32 +64,27 @@ func NewQuotaListResponseWithDefaults() *QuotaListResponse {
 }
 
 // GetQuotas returns the Quotas field value
-func (o *QuotaListResponse) GetQuotas() *QuotaList {
-	if o == nil || IsNil(o.Quotas) {
-		var ret *QuotaList
-		return ret
-	}
-
-	return o.Quotas
+func (o *QuotaListResponse) GetQuotas() (ret QuotaListResponseGetQuotasRetType) {
+	ret, _ = o.GetQuotasOk()
+	return ret
 }
 
 // GetQuotasOk returns a tuple with the Quotas field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListResponse) GetQuotasOk() (*QuotaList, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Quotas, true
+func (o *QuotaListResponse) GetQuotasOk() (ret QuotaListResponseGetQuotasRetType, ok bool) {
+	return getQuotaListResponseGetQuotasAttributeTypeOk(o.Quotas)
 }
 
 // SetQuotas sets field value
-func (o *QuotaListResponse) SetQuotas(v *QuotaList) {
-	o.Quotas = v
+func (o *QuotaListResponse) SetQuotas(v QuotaListResponseGetQuotasRetType) {
+	setQuotaListResponseGetQuotasAttributeType(&o.Quotas, v)
 }
 
 func (o QuotaListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["quotas"] = o.Quotas
+	if val, ok := getQuotaListResponseGetQuotasAttributeTypeOk(o.Quotas); ok {
+		toSerialize["Quotas"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_security_group_rules.go b/services/iaas/model_quota_list_security_group_rules.go
index 8cd449de7..af34850e4 100644
--- a/services/iaas/model_quota_list_security_group_rules.go
+++ b/services/iaas/model_quota_list_security_group_rules.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListSecurityGroupRules type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListSecurityGroupRules{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListSecurityGroupRulesGetLimitAttributeType = *int64
+type QuotaListSecurityGroupRulesGetLimitArgType = int64
+type QuotaListSecurityGroupRulesGetLimitRetType = int64
+
+func getQuotaListSecurityGroupRulesGetLimitAttributeTypeOk(arg QuotaListSecurityGroupRulesGetLimitAttributeType) (ret QuotaListSecurityGroupRulesGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListSecurityGroupRulesGetLimitAttributeType(arg *QuotaListSecurityGroupRulesGetLimitAttributeType, val QuotaListSecurityGroupRulesGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListSecurityGroupRulesGetUsageAttributeType = *int64
+type QuotaListSecurityGroupRulesGetUsageArgType = int64
+type QuotaListSecurityGroupRulesGetUsageRetType = int64
+
+func getQuotaListSecurityGroupRulesGetUsageAttributeTypeOk(arg QuotaListSecurityGroupRulesGetUsageAttributeType) (ret QuotaListSecurityGroupRulesGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListSecurityGroupRulesGetUsageAttributeType(arg *QuotaListSecurityGroupRulesGetUsageAttributeType, val QuotaListSecurityGroupRulesGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListSecurityGroupRules Number of security group rules.
 type QuotaListSecurityGroupRules struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListSecurityGroupRulesGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListSecurityGroupRulesGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListSecurityGroupRules QuotaListSecurityGroupRules
@@ -31,10 +71,10 @@ type _QuotaListSecurityGroupRules QuotaListSecurityGroupRules
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListSecurityGroupRules(limit *int64, usage *int64) *QuotaListSecurityGroupRules {
+func NewQuotaListSecurityGroupRules(limit QuotaListSecurityGroupRulesGetLimitArgType, usage QuotaListSecurityGroupRulesGetUsageArgType) *QuotaListSecurityGroupRules {
 	this := QuotaListSecurityGroupRules{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListSecurityGroupRulesGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListSecurityGroupRulesGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListSecurityGroupRulesWithDefaults() *QuotaListSecurityGroupRules {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListSecurityGroupRules) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListSecurityGroupRules) GetLimit() (ret QuotaListSecurityGroupRulesGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListSecurityGroupRules) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListSecurityGroupRules) GetLimitOk() (ret QuotaListSecurityGroupRulesGetLimitRetType, ok bool) {
+	return getQuotaListSecurityGroupRulesGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListSecurityGroupRules) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListSecurityGroupRules) SetLimit(v QuotaListSecurityGroupRulesGetLimitRetType) {
+	setQuotaListSecurityGroupRulesGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListSecurityGroupRules) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListSecurityGroupRules) GetUsage() (ret QuotaListSecurityGroupRulesGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListSecurityGroupRules) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListSecurityGroupRules) GetUsageOk() (ret QuotaListSecurityGroupRulesGetUsageRetType, ok bool) {
+	return getQuotaListSecurityGroupRulesGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListSecurityGroupRules) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListSecurityGroupRules) SetUsage(v QuotaListSecurityGroupRulesGetUsageRetType) {
+	setQuotaListSecurityGroupRulesGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListSecurityGroupRules) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListSecurityGroupRulesGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListSecurityGroupRulesGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_security_groups.go b/services/iaas/model_quota_list_security_groups.go
index 19e797399..0db1f02b6 100644
--- a/services/iaas/model_quota_list_security_groups.go
+++ b/services/iaas/model_quota_list_security_groups.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListSecurityGroups type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListSecurityGroups{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListSecurityGroupsGetLimitAttributeType = *int64
+type QuotaListSecurityGroupsGetLimitArgType = int64
+type QuotaListSecurityGroupsGetLimitRetType = int64
+
+func getQuotaListSecurityGroupsGetLimitAttributeTypeOk(arg QuotaListSecurityGroupsGetLimitAttributeType) (ret QuotaListSecurityGroupsGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListSecurityGroupsGetLimitAttributeType(arg *QuotaListSecurityGroupsGetLimitAttributeType, val QuotaListSecurityGroupsGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListSecurityGroupsGetUsageAttributeType = *int64
+type QuotaListSecurityGroupsGetUsageArgType = int64
+type QuotaListSecurityGroupsGetUsageRetType = int64
+
+func getQuotaListSecurityGroupsGetUsageAttributeTypeOk(arg QuotaListSecurityGroupsGetUsageAttributeType) (ret QuotaListSecurityGroupsGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListSecurityGroupsGetUsageAttributeType(arg *QuotaListSecurityGroupsGetUsageAttributeType, val QuotaListSecurityGroupsGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListSecurityGroups Number of security groups.
 type QuotaListSecurityGroups struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListSecurityGroupsGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListSecurityGroupsGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListSecurityGroups QuotaListSecurityGroups
@@ -31,10 +71,10 @@ type _QuotaListSecurityGroups QuotaListSecurityGroups
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListSecurityGroups(limit *int64, usage *int64) *QuotaListSecurityGroups {
+func NewQuotaListSecurityGroups(limit QuotaListSecurityGroupsGetLimitArgType, usage QuotaListSecurityGroupsGetUsageArgType) *QuotaListSecurityGroups {
 	this := QuotaListSecurityGroups{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListSecurityGroupsGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListSecurityGroupsGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListSecurityGroupsWithDefaults() *QuotaListSecurityGroups {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListSecurityGroups) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListSecurityGroups) GetLimit() (ret QuotaListSecurityGroupsGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListSecurityGroups) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListSecurityGroups) GetLimitOk() (ret QuotaListSecurityGroupsGetLimitRetType, ok bool) {
+	return getQuotaListSecurityGroupsGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListSecurityGroups) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListSecurityGroups) SetLimit(v QuotaListSecurityGroupsGetLimitRetType) {
+	setQuotaListSecurityGroupsGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListSecurityGroups) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListSecurityGroups) GetUsage() (ret QuotaListSecurityGroupsGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListSecurityGroups) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListSecurityGroups) GetUsageOk() (ret QuotaListSecurityGroupsGetUsageRetType, ok bool) {
+	return getQuotaListSecurityGroupsGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListSecurityGroups) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListSecurityGroups) SetUsage(v QuotaListSecurityGroupsGetUsageRetType) {
+	setQuotaListSecurityGroupsGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListSecurityGroups) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListSecurityGroupsGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListSecurityGroupsGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_snapshots.go b/services/iaas/model_quota_list_snapshots.go
index 00cbab628..ea9e523e0 100644
--- a/services/iaas/model_quota_list_snapshots.go
+++ b/services/iaas/model_quota_list_snapshots.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListSnapshots type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListSnapshots{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListSnapshotsGetLimitAttributeType = *int64
+type QuotaListSnapshotsGetLimitArgType = int64
+type QuotaListSnapshotsGetLimitRetType = int64
+
+func getQuotaListSnapshotsGetLimitAttributeTypeOk(arg QuotaListSnapshotsGetLimitAttributeType) (ret QuotaListSnapshotsGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListSnapshotsGetLimitAttributeType(arg *QuotaListSnapshotsGetLimitAttributeType, val QuotaListSnapshotsGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListSnapshotsGetUsageAttributeType = *int64
+type QuotaListSnapshotsGetUsageArgType = int64
+type QuotaListSnapshotsGetUsageRetType = int64
+
+func getQuotaListSnapshotsGetUsageAttributeTypeOk(arg QuotaListSnapshotsGetUsageAttributeType) (ret QuotaListSnapshotsGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListSnapshotsGetUsageAttributeType(arg *QuotaListSnapshotsGetUsageAttributeType, val QuotaListSnapshotsGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListSnapshots Number of snapshots.
 type QuotaListSnapshots struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListSnapshotsGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListSnapshotsGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListSnapshots QuotaListSnapshots
@@ -31,10 +71,10 @@ type _QuotaListSnapshots QuotaListSnapshots
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListSnapshots(limit *int64, usage *int64) *QuotaListSnapshots {
+func NewQuotaListSnapshots(limit QuotaListSnapshotsGetLimitArgType, usage QuotaListSnapshotsGetUsageArgType) *QuotaListSnapshots {
 	this := QuotaListSnapshots{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListSnapshotsGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListSnapshotsGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListSnapshotsWithDefaults() *QuotaListSnapshots {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListSnapshots) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListSnapshots) GetLimit() (ret QuotaListSnapshotsGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListSnapshots) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListSnapshots) GetLimitOk() (ret QuotaListSnapshotsGetLimitRetType, ok bool) {
+	return getQuotaListSnapshotsGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListSnapshots) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListSnapshots) SetLimit(v QuotaListSnapshotsGetLimitRetType) {
+	setQuotaListSnapshotsGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListSnapshots) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListSnapshots) GetUsage() (ret QuotaListSnapshotsGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListSnapshots) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListSnapshots) GetUsageOk() (ret QuotaListSnapshotsGetUsageRetType, ok bool) {
+	return getQuotaListSnapshotsGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListSnapshots) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListSnapshots) SetUsage(v QuotaListSnapshotsGetUsageRetType) {
+	setQuotaListSnapshotsGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListSnapshots) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListSnapshotsGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListSnapshotsGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_vcpu.go b/services/iaas/model_quota_list_vcpu.go
index cec476cdb..0a09b9921 100644
--- a/services/iaas/model_quota_list_vcpu.go
+++ b/services/iaas/model_quota_list_vcpu.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListVcpu type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListVcpu{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListVcpuGetLimitAttributeType = *int64
+type QuotaListVcpuGetLimitArgType = int64
+type QuotaListVcpuGetLimitRetType = int64
+
+func getQuotaListVcpuGetLimitAttributeTypeOk(arg QuotaListVcpuGetLimitAttributeType) (ret QuotaListVcpuGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListVcpuGetLimitAttributeType(arg *QuotaListVcpuGetLimitAttributeType, val QuotaListVcpuGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListVcpuGetUsageAttributeType = *int64
+type QuotaListVcpuGetUsageArgType = int64
+type QuotaListVcpuGetUsageRetType = int64
+
+func getQuotaListVcpuGetUsageAttributeTypeOk(arg QuotaListVcpuGetUsageAttributeType) (ret QuotaListVcpuGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListVcpuGetUsageAttributeType(arg *QuotaListVcpuGetUsageAttributeType, val QuotaListVcpuGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListVcpu Number of server cores.
 type QuotaListVcpu struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListVcpuGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListVcpuGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListVcpu QuotaListVcpu
@@ -31,10 +71,10 @@ type _QuotaListVcpu QuotaListVcpu
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListVcpu(limit *int64, usage *int64) *QuotaListVcpu {
+func NewQuotaListVcpu(limit QuotaListVcpuGetLimitArgType, usage QuotaListVcpuGetUsageArgType) *QuotaListVcpu {
 	this := QuotaListVcpu{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListVcpuGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListVcpuGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListVcpuWithDefaults() *QuotaListVcpu {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListVcpu) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListVcpu) GetLimit() (ret QuotaListVcpuGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListVcpu) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListVcpu) GetLimitOk() (ret QuotaListVcpuGetLimitRetType, ok bool) {
+	return getQuotaListVcpuGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListVcpu) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListVcpu) SetLimit(v QuotaListVcpuGetLimitRetType) {
+	setQuotaListVcpuGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListVcpu) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListVcpu) GetUsage() (ret QuotaListVcpuGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListVcpu) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListVcpu) GetUsageOk() (ret QuotaListVcpuGetUsageRetType, ok bool) {
+	return getQuotaListVcpuGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListVcpu) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListVcpu) SetUsage(v QuotaListVcpuGetUsageRetType) {
+	setQuotaListVcpuGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListVcpu) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListVcpuGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListVcpuGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_quota_list_volumes.go b/services/iaas/model_quota_list_volumes.go
index f4fc99339..a5a384192 100644
--- a/services/iaas/model_quota_list_volumes.go
+++ b/services/iaas/model_quota_list_volumes.go
@@ -17,12 +17,52 @@ import (
 // checks if the QuotaListVolumes type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &QuotaListVolumes{}
 
+/*
+	types and functions for limit
+*/
+
+// isLong
+type QuotaListVolumesGetLimitAttributeType = *int64
+type QuotaListVolumesGetLimitArgType = int64
+type QuotaListVolumesGetLimitRetType = int64
+
+func getQuotaListVolumesGetLimitAttributeTypeOk(arg QuotaListVolumesGetLimitAttributeType) (ret QuotaListVolumesGetLimitRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListVolumesGetLimitAttributeType(arg *QuotaListVolumesGetLimitAttributeType, val QuotaListVolumesGetLimitRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for usage
+*/
+
+// isLong
+type QuotaListVolumesGetUsageAttributeType = *int64
+type QuotaListVolumesGetUsageArgType = int64
+type QuotaListVolumesGetUsageRetType = int64
+
+func getQuotaListVolumesGetUsageAttributeTypeOk(arg QuotaListVolumesGetUsageAttributeType) (ret QuotaListVolumesGetUsageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setQuotaListVolumesGetUsageAttributeType(arg *QuotaListVolumesGetUsageAttributeType, val QuotaListVolumesGetUsageRetType) {
+	*arg = &val
+}
+
 // QuotaListVolumes Number of volumes.
 type QuotaListVolumes struct {
 	// REQUIRED
-	Limit *int64 `json:"limit"`
+	Limit QuotaListVolumesGetLimitAttributeType `json:"limit"`
 	// REQUIRED
-	Usage *int64 `json:"usage"`
+	Usage QuotaListVolumesGetUsageAttributeType `json:"usage"`
 }
 
 type _QuotaListVolumes QuotaListVolumes
@@ -31,10 +71,10 @@ type _QuotaListVolumes QuotaListVolumes
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewQuotaListVolumes(limit *int64, usage *int64) *QuotaListVolumes {
+func NewQuotaListVolumes(limit QuotaListVolumesGetLimitArgType, usage QuotaListVolumesGetUsageArgType) *QuotaListVolumes {
 	this := QuotaListVolumes{}
-	this.Limit = limit
-	this.Usage = usage
+	setQuotaListVolumesGetLimitAttributeType(&this.Limit, limit)
+	setQuotaListVolumesGetUsageAttributeType(&this.Usage, usage)
 	return &this
 }
 
@@ -47,57 +87,47 @@ func NewQuotaListVolumesWithDefaults() *QuotaListVolumes {
 }
 
 // GetLimit returns the Limit field value
-func (o *QuotaListVolumes) GetLimit() *int64 {
-	if o == nil || IsNil(o.Limit) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Limit
+func (o *QuotaListVolumes) GetLimit() (ret QuotaListVolumesGetLimitRetType) {
+	ret, _ = o.GetLimitOk()
+	return ret
 }
 
 // GetLimitOk returns a tuple with the Limit field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListVolumes) GetLimitOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Limit, true
+func (o *QuotaListVolumes) GetLimitOk() (ret QuotaListVolumesGetLimitRetType, ok bool) {
+	return getQuotaListVolumesGetLimitAttributeTypeOk(o.Limit)
 }
 
 // SetLimit sets field value
-func (o *QuotaListVolumes) SetLimit(v *int64) {
-	o.Limit = v
+func (o *QuotaListVolumes) SetLimit(v QuotaListVolumesGetLimitRetType) {
+	setQuotaListVolumesGetLimitAttributeType(&o.Limit, v)
 }
 
 // GetUsage returns the Usage field value
-func (o *QuotaListVolumes) GetUsage() *int64 {
-	if o == nil || IsNil(o.Usage) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Usage
+func (o *QuotaListVolumes) GetUsage() (ret QuotaListVolumesGetUsageRetType) {
+	ret, _ = o.GetUsageOk()
+	return ret
 }
 
 // GetUsageOk returns a tuple with the Usage field value
 // and a boolean to check if the value has been set.
-func (o *QuotaListVolumes) GetUsageOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Usage, true
+func (o *QuotaListVolumes) GetUsageOk() (ret QuotaListVolumesGetUsageRetType, ok bool) {
+	return getQuotaListVolumesGetUsageAttributeTypeOk(o.Usage)
 }
 
 // SetUsage sets field value
-func (o *QuotaListVolumes) SetUsage(v *int64) {
-	o.Usage = v
+func (o *QuotaListVolumes) SetUsage(v QuotaListVolumesGetUsageRetType) {
+	setQuotaListVolumesGetUsageAttributeType(&o.Usage, v)
 }
 
 func (o QuotaListVolumes) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["limit"] = o.Limit
-	toSerialize["usage"] = o.Usage
+	if val, ok := getQuotaListVolumesGetLimitAttributeTypeOk(o.Limit); ok {
+		toSerialize["Limit"] = val
+	}
+	if val, ok := getQuotaListVolumesGetUsageAttributeTypeOk(o.Usage); ok {
+		toSerialize["Usage"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_request.go b/services/iaas/model_request.go
index 842ce74ca..021500fb0 100644
--- a/services/iaas/model_request.go
+++ b/services/iaas/model_request.go
@@ -17,23 +17,148 @@ import (
 // checks if the Request type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Request{}
 
+/*
+	types and functions for details
+*/
+
+// isNotNullableString
+type RequestGetDetailsAttributeType = *string
+
+func getRequestGetDetailsAttributeTypeOk(arg RequestGetDetailsAttributeType) (ret RequestGetDetailsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestGetDetailsAttributeType(arg *RequestGetDetailsAttributeType, val RequestGetDetailsRetType) {
+	*arg = &val
+}
+
+type RequestGetDetailsArgType = string
+type RequestGetDetailsRetType = string
+
+/*
+	types and functions for requestAction
+*/
+
+// isNotNullableString
+type RequestGetRequestActionAttributeType = *string
+
+func getRequestGetRequestActionAttributeTypeOk(arg RequestGetRequestActionAttributeType) (ret RequestGetRequestActionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestGetRequestActionAttributeType(arg *RequestGetRequestActionAttributeType, val RequestGetRequestActionRetType) {
+	*arg = &val
+}
+
+type RequestGetRequestActionArgType = string
+type RequestGetRequestActionRetType = string
+
+/*
+	types and functions for requestId
+*/
+
+// isNotNullableString
+type RequestGetRequestIdAttributeType = *string
+
+func getRequestGetRequestIdAttributeTypeOk(arg RequestGetRequestIdAttributeType) (ret RequestGetRequestIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestGetRequestIdAttributeType(arg *RequestGetRequestIdAttributeType, val RequestGetRequestIdRetType) {
+	*arg = &val
+}
+
+type RequestGetRequestIdArgType = string
+type RequestGetRequestIdRetType = string
+
+/*
+	types and functions for requestType
+*/
+
+// isNotNullableString
+type RequestGetRequestTypeAttributeType = *string
+
+func getRequestGetRequestTypeAttributeTypeOk(arg RequestGetRequestTypeAttributeType) (ret RequestGetRequestTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestGetRequestTypeAttributeType(arg *RequestGetRequestTypeAttributeType, val RequestGetRequestTypeRetType) {
+	*arg = &val
+}
+
+type RequestGetRequestTypeArgType = string
+type RequestGetRequestTypeRetType = string
+
+/*
+	types and functions for resources
+*/
+
+// isArray
+type RequestGetResourcesAttributeType = *[]RequestResource
+type RequestGetResourcesArgType = []RequestResource
+type RequestGetResourcesRetType = []RequestResource
+
+func getRequestGetResourcesAttributeTypeOk(arg RequestGetResourcesAttributeType) (ret RequestGetResourcesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestGetResourcesAttributeType(arg *RequestGetResourcesAttributeType, val RequestGetResourcesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type RequestGetStatusAttributeType = *string
+
+func getRequestGetStatusAttributeTypeOk(arg RequestGetStatusAttributeType) (ret RequestGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestGetStatusAttributeType(arg *RequestGetStatusAttributeType, val RequestGetStatusRetType) {
+	*arg = &val
+}
+
+type RequestGetStatusArgType = string
+type RequestGetStatusRetType = string
+
 // Request Object that represents a request.
 type Request struct {
-	Details *string `json:"details,omitempty"`
+	Details RequestGetDetailsAttributeType `json:"details,omitempty"`
 	// Object that represents a resource action. Possible values: `CREATE`, `DELETE`, `UPDATE`.
 	// REQUIRED
-	RequestAction *string `json:"requestAction"`
+	RequestAction RequestGetRequestActionAttributeType `json:"requestAction"`
 	// Identifier (ID) representing a single API request.
 	// REQUIRED
-	RequestId *string `json:"requestId"`
+	RequestId RequestGetRequestIdAttributeType `json:"requestId"`
 	// Object that represents a resource type. Possible values: `BACKUP`, `IMAGE`, `NETWORK`, `NETWORKAREA`, `NIC`, `PROJECT`, `ROUTE`, `SERVER`, `SERVICEACCOUNT`, `SNAPSHOT`, `VIRTUALIP`, `VOLUME`.
 	// REQUIRED
-	RequestType *string `json:"requestType"`
+	RequestType RequestGetRequestTypeAttributeType `json:"requestType"`
 	// REQUIRED
-	Resources *[]RequestResource `json:"resources"`
+	Resources RequestGetResourcesAttributeType `json:"resources"`
 	// The state of a resource object. Possible values: `CREATING`, `CREATED`, `DELETING`, `DELETED`, `FAILED`, `UPDATED`, `UPDATING`.
 	// REQUIRED
-	Status *string `json:"status"`
+	Status RequestGetStatusAttributeType `json:"status"`
 }
 
 type _Request Request
@@ -42,13 +167,13 @@ type _Request Request
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewRequest(requestAction *string, requestId *string, requestType *string, resources *[]RequestResource, status *string) *Request {
+func NewRequest(requestAction RequestGetRequestActionArgType, requestId RequestGetRequestIdArgType, requestType RequestGetRequestTypeArgType, resources RequestGetResourcesArgType, status RequestGetStatusArgType) *Request {
 	this := Request{}
-	this.RequestAction = requestAction
-	this.RequestId = requestId
-	this.RequestType = requestType
-	this.Resources = resources
-	this.Status = status
+	setRequestGetRequestActionAttributeType(&this.RequestAction, requestAction)
+	setRequestGetRequestIdAttributeType(&this.RequestId, requestId)
+	setRequestGetRequestTypeAttributeType(&this.RequestType, requestType)
+	setRequestGetResourcesAttributeType(&this.Resources, resources)
+	setRequestGetStatusAttributeType(&this.Status, status)
 	return &this
 }
 
@@ -61,167 +186,133 @@ func NewRequestWithDefaults() *Request {
 }
 
 // GetDetails returns the Details field value if set, zero value otherwise.
-func (o *Request) GetDetails() *string {
-	if o == nil || IsNil(o.Details) {
-		var ret *string
-		return ret
-	}
-	return o.Details
+func (o *Request) GetDetails() (res RequestGetDetailsRetType) {
+	res, _ = o.GetDetailsOk()
+	return
 }
 
 // GetDetailsOk returns a tuple with the Details field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Request) GetDetailsOk() (*string, bool) {
-	if o == nil || IsNil(o.Details) {
-		return nil, false
-	}
-	return o.Details, true
+func (o *Request) GetDetailsOk() (ret RequestGetDetailsRetType, ok bool) {
+	return getRequestGetDetailsAttributeTypeOk(o.Details)
 }
 
 // HasDetails returns a boolean if a field has been set.
 func (o *Request) HasDetails() bool {
-	if o != nil && !IsNil(o.Details) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDetailsOk()
+	return ok
 }
 
 // SetDetails gets a reference to the given string and assigns it to the Details field.
-func (o *Request) SetDetails(v *string) {
-	o.Details = v
+func (o *Request) SetDetails(v RequestGetDetailsRetType) {
+	setRequestGetDetailsAttributeType(&o.Details, v)
 }
 
 // GetRequestAction returns the RequestAction field value
-func (o *Request) GetRequestAction() *string {
-	if o == nil || IsNil(o.RequestAction) {
-		var ret *string
-		return ret
-	}
-
-	return o.RequestAction
+func (o *Request) GetRequestAction() (ret RequestGetRequestActionRetType) {
+	ret, _ = o.GetRequestActionOk()
+	return ret
 }
 
 // GetRequestActionOk returns a tuple with the RequestAction field value
 // and a boolean to check if the value has been set.
-func (o *Request) GetRequestActionOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.RequestAction, true
+func (o *Request) GetRequestActionOk() (ret RequestGetRequestActionRetType, ok bool) {
+	return getRequestGetRequestActionAttributeTypeOk(o.RequestAction)
 }
 
 // SetRequestAction sets field value
-func (o *Request) SetRequestAction(v *string) {
-	o.RequestAction = v
+func (o *Request) SetRequestAction(v RequestGetRequestActionRetType) {
+	setRequestGetRequestActionAttributeType(&o.RequestAction, v)
 }
 
 // GetRequestId returns the RequestId field value
-func (o *Request) GetRequestId() *string {
-	if o == nil || IsNil(o.RequestId) {
-		var ret *string
-		return ret
-	}
-
-	return o.RequestId
+func (o *Request) GetRequestId() (ret RequestGetRequestIdRetType) {
+	ret, _ = o.GetRequestIdOk()
+	return ret
 }
 
 // GetRequestIdOk returns a tuple with the RequestId field value
 // and a boolean to check if the value has been set.
-func (o *Request) GetRequestIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.RequestId, true
+func (o *Request) GetRequestIdOk() (ret RequestGetRequestIdRetType, ok bool) {
+	return getRequestGetRequestIdAttributeTypeOk(o.RequestId)
 }
 
 // SetRequestId sets field value
-func (o *Request) SetRequestId(v *string) {
-	o.RequestId = v
+func (o *Request) SetRequestId(v RequestGetRequestIdRetType) {
+	setRequestGetRequestIdAttributeType(&o.RequestId, v)
 }
 
 // GetRequestType returns the RequestType field value
-func (o *Request) GetRequestType() *string {
-	if o == nil || IsNil(o.RequestType) {
-		var ret *string
-		return ret
-	}
-
-	return o.RequestType
+func (o *Request) GetRequestType() (ret RequestGetRequestTypeRetType) {
+	ret, _ = o.GetRequestTypeOk()
+	return ret
 }
 
 // GetRequestTypeOk returns a tuple with the RequestType field value
 // and a boolean to check if the value has been set.
-func (o *Request) GetRequestTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.RequestType, true
+func (o *Request) GetRequestTypeOk() (ret RequestGetRequestTypeRetType, ok bool) {
+	return getRequestGetRequestTypeAttributeTypeOk(o.RequestType)
 }
 
 // SetRequestType sets field value
-func (o *Request) SetRequestType(v *string) {
-	o.RequestType = v
+func (o *Request) SetRequestType(v RequestGetRequestTypeRetType) {
+	setRequestGetRequestTypeAttributeType(&o.RequestType, v)
 }
 
 // GetResources returns the Resources field value
-func (o *Request) GetResources() *[]RequestResource {
-	if o == nil || IsNil(o.Resources) {
-		var ret *[]RequestResource
-		return ret
-	}
-
-	return o.Resources
+func (o *Request) GetResources() (ret RequestGetResourcesRetType) {
+	ret, _ = o.GetResourcesOk()
+	return ret
 }
 
 // GetResourcesOk returns a tuple with the Resources field value
 // and a boolean to check if the value has been set.
-func (o *Request) GetResourcesOk() (*[]RequestResource, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Resources, true
+func (o *Request) GetResourcesOk() (ret RequestGetResourcesRetType, ok bool) {
+	return getRequestGetResourcesAttributeTypeOk(o.Resources)
 }
 
 // SetResources sets field value
-func (o *Request) SetResources(v *[]RequestResource) {
-	o.Resources = v
+func (o *Request) SetResources(v RequestGetResourcesRetType) {
+	setRequestGetResourcesAttributeType(&o.Resources, v)
 }
 
 // GetStatus returns the Status field value
-func (o *Request) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-
-	return o.Status
+func (o *Request) GetStatus() (ret RequestGetStatusRetType) {
+	ret, _ = o.GetStatusOk()
+	return ret
 }
 
 // GetStatusOk returns a tuple with the Status field value
 // and a boolean to check if the value has been set.
-func (o *Request) GetStatusOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Status, true
+func (o *Request) GetStatusOk() (ret RequestGetStatusRetType, ok bool) {
+	return getRequestGetStatusAttributeTypeOk(o.Status)
 }
 
 // SetStatus sets field value
-func (o *Request) SetStatus(v *string) {
-	o.Status = v
+func (o *Request) SetStatus(v RequestGetStatusRetType) {
+	setRequestGetStatusAttributeType(&o.Status, v)
 }
 
 func (o Request) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Details) {
-		toSerialize["details"] = o.Details
+	if val, ok := getRequestGetDetailsAttributeTypeOk(o.Details); ok {
+		toSerialize["Details"] = val
+	}
+	if val, ok := getRequestGetRequestActionAttributeTypeOk(o.RequestAction); ok {
+		toSerialize["RequestAction"] = val
+	}
+	if val, ok := getRequestGetRequestIdAttributeTypeOk(o.RequestId); ok {
+		toSerialize["RequestId"] = val
+	}
+	if val, ok := getRequestGetRequestTypeAttributeTypeOk(o.RequestType); ok {
+		toSerialize["RequestType"] = val
+	}
+	if val, ok := getRequestGetResourcesAttributeTypeOk(o.Resources); ok {
+		toSerialize["Resources"] = val
+	}
+	if val, ok := getRequestGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	toSerialize["requestAction"] = o.RequestAction
-	toSerialize["requestId"] = o.RequestId
-	toSerialize["requestType"] = o.RequestType
-	toSerialize["resources"] = o.Resources
-	toSerialize["status"] = o.Status
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_request_resource.go b/services/iaas/model_request_resource.go
index dec67bad3..117854a5f 100644
--- a/services/iaas/model_request_resource.go
+++ b/services/iaas/model_request_resource.go
@@ -17,17 +17,80 @@ import (
 // checks if the RequestResource type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &RequestResource{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type RequestResourceGetIdAttributeType = *string
+
+func getRequestResourceGetIdAttributeTypeOk(arg RequestResourceGetIdAttributeType) (ret RequestResourceGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestResourceGetIdAttributeType(arg *RequestResourceGetIdAttributeType, val RequestResourceGetIdRetType) {
+	*arg = &val
+}
+
+type RequestResourceGetIdArgType = string
+type RequestResourceGetIdRetType = string
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type RequestResourceGetStatusAttributeType = *string
+
+func getRequestResourceGetStatusAttributeTypeOk(arg RequestResourceGetStatusAttributeType) (ret RequestResourceGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestResourceGetStatusAttributeType(arg *RequestResourceGetStatusAttributeType, val RequestResourceGetStatusRetType) {
+	*arg = &val
+}
+
+type RequestResourceGetStatusArgType = string
+type RequestResourceGetStatusRetType = string
+
+/*
+	types and functions for type
+*/
+
+// isNotNullableString
+type RequestResourceGetTypeAttributeType = *string
+
+func getRequestResourceGetTypeAttributeTypeOk(arg RequestResourceGetTypeAttributeType) (ret RequestResourceGetTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRequestResourceGetTypeAttributeType(arg *RequestResourceGetTypeAttributeType, val RequestResourceGetTypeRetType) {
+	*arg = &val
+}
+
+type RequestResourceGetTypeArgType = string
+type RequestResourceGetTypeRetType = string
+
 // RequestResource Object that represents a resource as part of a request.
 type RequestResource struct {
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	Id *string `json:"id"`
+	Id RequestResourceGetIdAttributeType `json:"id"`
 	// The state of a resource object. Possible values: `CREATING`, `CREATED`, `DELETING`, `DELETED`, `FAILED`, `UPDATED`, `UPDATING`.
 	// REQUIRED
-	Status *string `json:"status"`
+	Status RequestResourceGetStatusAttributeType `json:"status"`
 	// Object that represents a resource type. Possible values: `BACKUP`, `IMAGE`, `NETWORK`, `NETWORKAREA`, `NIC`, `PROJECT`, `ROUTE`, `SERVER`, `SERVICEACCOUNT`, `SNAPSHOT`, `VIRTUALIP`, `VOLUME`.
 	// REQUIRED
-	Type *string `json:"type"`
+	Type RequestResourceGetTypeAttributeType `json:"type"`
 }
 
 type _RequestResource RequestResource
@@ -36,11 +99,11 @@ type _RequestResource RequestResource
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewRequestResource(id *string, status *string, type_ *string) *RequestResource {
+func NewRequestResource(id RequestResourceGetIdArgType, status RequestResourceGetStatusArgType, type_ RequestResourceGetTypeArgType) *RequestResource {
 	this := RequestResource{}
-	this.Id = id
-	this.Status = status
-	this.Type = type_
+	setRequestResourceGetIdAttributeType(&this.Id, id)
+	setRequestResourceGetStatusAttributeType(&this.Status, status)
+	setRequestResourceGetTypeAttributeType(&this.Type, type_)
 	return &this
 }
 
@@ -53,82 +116,67 @@ func NewRequestResourceWithDefaults() *RequestResource {
 }
 
 // GetId returns the Id field value
-func (o *RequestResource) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-
-	return o.Id
+func (o *RequestResource) GetId() (ret RequestResourceGetIdRetType) {
+	ret, _ = o.GetIdOk()
+	return ret
 }
 
 // GetIdOk returns a tuple with the Id field value
 // and a boolean to check if the value has been set.
-func (o *RequestResource) GetIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Id, true
+func (o *RequestResource) GetIdOk() (ret RequestResourceGetIdRetType, ok bool) {
+	return getRequestResourceGetIdAttributeTypeOk(o.Id)
 }
 
 // SetId sets field value
-func (o *RequestResource) SetId(v *string) {
-	o.Id = v
+func (o *RequestResource) SetId(v RequestResourceGetIdRetType) {
+	setRequestResourceGetIdAttributeType(&o.Id, v)
 }
 
 // GetStatus returns the Status field value
-func (o *RequestResource) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-
-	return o.Status
+func (o *RequestResource) GetStatus() (ret RequestResourceGetStatusRetType) {
+	ret, _ = o.GetStatusOk()
+	return ret
 }
 
 // GetStatusOk returns a tuple with the Status field value
 // and a boolean to check if the value has been set.
-func (o *RequestResource) GetStatusOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Status, true
+func (o *RequestResource) GetStatusOk() (ret RequestResourceGetStatusRetType, ok bool) {
+	return getRequestResourceGetStatusAttributeTypeOk(o.Status)
 }
 
 // SetStatus sets field value
-func (o *RequestResource) SetStatus(v *string) {
-	o.Status = v
+func (o *RequestResource) SetStatus(v RequestResourceGetStatusRetType) {
+	setRequestResourceGetStatusAttributeType(&o.Status, v)
 }
 
 // GetType returns the Type field value
-func (o *RequestResource) GetType() *string {
-	if o == nil || IsNil(o.Type) {
-		var ret *string
-		return ret
-	}
-
-	return o.Type
+func (o *RequestResource) GetType() (ret RequestResourceGetTypeRetType) {
+	ret, _ = o.GetTypeOk()
+	return ret
 }
 
 // GetTypeOk returns a tuple with the Type field value
 // and a boolean to check if the value has been set.
-func (o *RequestResource) GetTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Type, true
+func (o *RequestResource) GetTypeOk() (ret RequestResourceGetTypeRetType, ok bool) {
+	return getRequestResourceGetTypeAttributeTypeOk(o.Type)
 }
 
 // SetType sets field value
-func (o *RequestResource) SetType(v *string) {
-	o.Type = v
+func (o *RequestResource) SetType(v RequestResourceGetTypeRetType) {
+	setRequestResourceGetTypeAttributeType(&o.Type, v)
 }
 
 func (o RequestResource) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["id"] = o.Id
-	toSerialize["status"] = o.Status
-	toSerialize["type"] = o.Type
+	if val, ok := getRequestResourceGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
+	}
+	if val, ok := getRequestResourceGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
+	}
+	if val, ok := getRequestResourceGetTypeAttributeTypeOk(o.Type); ok {
+		toSerialize["Type"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_rescue_server_payload.go b/services/iaas/model_rescue_server_payload.go
index fdf3ce392..907af4415 100644
--- a/services/iaas/model_rescue_server_payload.go
+++ b/services/iaas/model_rescue_server_payload.go
@@ -17,11 +17,32 @@ import (
 // checks if the RescueServerPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &RescueServerPayload{}
 
+/*
+	types and functions for image
+*/
+
+// isNotNullableString
+type RescueServerPayloadGetImageAttributeType = *string
+
+func getRescueServerPayloadGetImageAttributeTypeOk(arg RescueServerPayloadGetImageAttributeType) (ret RescueServerPayloadGetImageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRescueServerPayloadGetImageAttributeType(arg *RescueServerPayloadGetImageAttributeType, val RescueServerPayloadGetImageRetType) {
+	*arg = &val
+}
+
+type RescueServerPayloadGetImageArgType = string
+type RescueServerPayloadGetImageRetType = string
+
 // RescueServerPayload struct for RescueServerPayload
 type RescueServerPayload struct {
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	Image *string `json:"image"`
+	Image RescueServerPayloadGetImageAttributeType `json:"image"`
 }
 
 type _RescueServerPayload RescueServerPayload
@@ -30,9 +51,9 @@ type _RescueServerPayload RescueServerPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewRescueServerPayload(image *string) *RescueServerPayload {
+func NewRescueServerPayload(image RescueServerPayloadGetImageArgType) *RescueServerPayload {
 	this := RescueServerPayload{}
-	this.Image = image
+	setRescueServerPayloadGetImageAttributeType(&this.Image, image)
 	return &this
 }
 
@@ -45,32 +66,27 @@ func NewRescueServerPayloadWithDefaults() *RescueServerPayload {
 }
 
 // GetImage returns the Image field value
-func (o *RescueServerPayload) GetImage() *string {
-	if o == nil || IsNil(o.Image) {
-		var ret *string
-		return ret
-	}
-
-	return o.Image
+func (o *RescueServerPayload) GetImage() (ret RescueServerPayloadGetImageRetType) {
+	ret, _ = o.GetImageOk()
+	return ret
 }
 
 // GetImageOk returns a tuple with the Image field value
 // and a boolean to check if the value has been set.
-func (o *RescueServerPayload) GetImageOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Image, true
+func (o *RescueServerPayload) GetImageOk() (ret RescueServerPayloadGetImageRetType, ok bool) {
+	return getRescueServerPayloadGetImageAttributeTypeOk(o.Image)
 }
 
 // SetImage sets field value
-func (o *RescueServerPayload) SetImage(v *string) {
-	o.Image = v
+func (o *RescueServerPayload) SetImage(v RescueServerPayloadGetImageRetType) {
+	setRescueServerPayloadGetImageAttributeType(&o.Image, v)
 }
 
 func (o RescueServerPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["image"] = o.Image
+	if val, ok := getRescueServerPayloadGetImageAttributeTypeOk(o.Image); ok {
+		toSerialize["Image"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_resize_server_payload.go b/services/iaas/model_resize_server_payload.go
index d89275bc1..3592a31f8 100644
--- a/services/iaas/model_resize_server_payload.go
+++ b/services/iaas/model_resize_server_payload.go
@@ -17,11 +17,32 @@ import (
 // checks if the ResizeServerPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ResizeServerPayload{}
 
+/*
+	types and functions for machineType
+*/
+
+// isNotNullableString
+type ResizeServerPayloadGetMachineTypeAttributeType = *string
+
+func getResizeServerPayloadGetMachineTypeAttributeTypeOk(arg ResizeServerPayloadGetMachineTypeAttributeType) (ret ResizeServerPayloadGetMachineTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setResizeServerPayloadGetMachineTypeAttributeType(arg *ResizeServerPayloadGetMachineTypeAttributeType, val ResizeServerPayloadGetMachineTypeRetType) {
+	*arg = &val
+}
+
+type ResizeServerPayloadGetMachineTypeArgType = string
+type ResizeServerPayloadGetMachineTypeRetType = string
+
 // ResizeServerPayload struct for ResizeServerPayload
 type ResizeServerPayload struct {
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	MachineType *string `json:"machineType"`
+	MachineType ResizeServerPayloadGetMachineTypeAttributeType `json:"machineType"`
 }
 
 type _ResizeServerPayload ResizeServerPayload
@@ -30,9 +51,9 @@ type _ResizeServerPayload ResizeServerPayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewResizeServerPayload(machineType *string) *ResizeServerPayload {
+func NewResizeServerPayload(machineType ResizeServerPayloadGetMachineTypeArgType) *ResizeServerPayload {
 	this := ResizeServerPayload{}
-	this.MachineType = machineType
+	setResizeServerPayloadGetMachineTypeAttributeType(&this.MachineType, machineType)
 	return &this
 }
 
@@ -45,32 +66,27 @@ func NewResizeServerPayloadWithDefaults() *ResizeServerPayload {
 }
 
 // GetMachineType returns the MachineType field value
-func (o *ResizeServerPayload) GetMachineType() *string {
-	if o == nil || IsNil(o.MachineType) {
-		var ret *string
-		return ret
-	}
-
-	return o.MachineType
+func (o *ResizeServerPayload) GetMachineType() (ret ResizeServerPayloadGetMachineTypeRetType) {
+	ret, _ = o.GetMachineTypeOk()
+	return ret
 }
 
 // GetMachineTypeOk returns a tuple with the MachineType field value
 // and a boolean to check if the value has been set.
-func (o *ResizeServerPayload) GetMachineTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.MachineType, true
+func (o *ResizeServerPayload) GetMachineTypeOk() (ret ResizeServerPayloadGetMachineTypeRetType, ok bool) {
+	return getResizeServerPayloadGetMachineTypeAttributeTypeOk(o.MachineType)
 }
 
 // SetMachineType sets field value
-func (o *ResizeServerPayload) SetMachineType(v *string) {
-	o.MachineType = v
+func (o *ResizeServerPayload) SetMachineType(v ResizeServerPayloadGetMachineTypeRetType) {
+	setResizeServerPayloadGetMachineTypeAttributeType(&o.MachineType, v)
 }
 
 func (o ResizeServerPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["machineType"] = o.MachineType
+	if val, ok := getResizeServerPayloadGetMachineTypeAttributeTypeOk(o.MachineType); ok {
+		toSerialize["MachineType"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_resize_volume_payload.go b/services/iaas/model_resize_volume_payload.go
index 8863bc87f..c6d4c1068 100644
--- a/services/iaas/model_resize_volume_payload.go
+++ b/services/iaas/model_resize_volume_payload.go
@@ -17,11 +17,31 @@ import (
 // checks if the ResizeVolumePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ResizeVolumePayload{}
 
+/*
+	types and functions for size
+*/
+
+// isLong
+type ResizeVolumePayloadGetSizeAttributeType = *int64
+type ResizeVolumePayloadGetSizeArgType = int64
+type ResizeVolumePayloadGetSizeRetType = int64
+
+func getResizeVolumePayloadGetSizeAttributeTypeOk(arg ResizeVolumePayloadGetSizeAttributeType) (ret ResizeVolumePayloadGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setResizeVolumePayloadGetSizeAttributeType(arg *ResizeVolumePayloadGetSizeAttributeType, val ResizeVolumePayloadGetSizeRetType) {
+	*arg = &val
+}
+
 // ResizeVolumePayload struct for ResizeVolumePayload
 type ResizeVolumePayload struct {
 	// Size in Gigabyte.
 	// REQUIRED
-	Size *int64 `json:"size"`
+	Size ResizeVolumePayloadGetSizeAttributeType `json:"size"`
 }
 
 type _ResizeVolumePayload ResizeVolumePayload
@@ -30,9 +50,9 @@ type _ResizeVolumePayload ResizeVolumePayload
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewResizeVolumePayload(size *int64) *ResizeVolumePayload {
+func NewResizeVolumePayload(size ResizeVolumePayloadGetSizeArgType) *ResizeVolumePayload {
 	this := ResizeVolumePayload{}
-	this.Size = size
+	setResizeVolumePayloadGetSizeAttributeType(&this.Size, size)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewResizeVolumePayloadWithDefaults() *ResizeVolumePayload {
 }
 
 // GetSize returns the Size field value
-func (o *ResizeVolumePayload) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-
-	return o.Size
+func (o *ResizeVolumePayload) GetSize() (ret ResizeVolumePayloadGetSizeRetType) {
+	ret, _ = o.GetSizeOk()
+	return ret
 }
 
 // GetSizeOk returns a tuple with the Size field value
 // and a boolean to check if the value has been set.
-func (o *ResizeVolumePayload) GetSizeOk() (*int64, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Size, true
+func (o *ResizeVolumePayload) GetSizeOk() (ret ResizeVolumePayloadGetSizeRetType, ok bool) {
+	return getResizeVolumePayloadGetSizeAttributeTypeOk(o.Size)
 }
 
 // SetSize sets field value
-func (o *ResizeVolumePayload) SetSize(v *int64) {
-	o.Size = v
+func (o *ResizeVolumePayload) SetSize(v ResizeVolumePayloadGetSizeRetType) {
+	setResizeVolumePayloadGetSizeAttributeType(&o.Size, v)
 }
 
 func (o ResizeVolumePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["size"] = o.Size
+	if val, ok := getResizeVolumePayloadGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_route.go b/services/iaas/model_route.go
index 5fac5152c..b34e8cb81 100644
--- a/services/iaas/model_route.go
+++ b/services/iaas/model_route.go
@@ -18,22 +18,145 @@ import (
 // checks if the Route type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Route{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type RouteGetCreatedAtAttributeType = *time.Time
+type RouteGetCreatedAtArgType = time.Time
+type RouteGetCreatedAtRetType = time.Time
+
+func getRouteGetCreatedAtAttributeTypeOk(arg RouteGetCreatedAtAttributeType) (ret RouteGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRouteGetCreatedAtAttributeType(arg *RouteGetCreatedAtAttributeType, val RouteGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type RouteGetLabelsAttributeType = *map[string]interface{}
+type RouteGetLabelsArgType = map[string]interface{}
+type RouteGetLabelsRetType = map[string]interface{}
+
+func getRouteGetLabelsAttributeTypeOk(arg RouteGetLabelsAttributeType) (ret RouteGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRouteGetLabelsAttributeType(arg *RouteGetLabelsAttributeType, val RouteGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for nexthop
+*/
+
+// isNotNullableString
+type RouteGetNexthopAttributeType = *string
+
+func getRouteGetNexthopAttributeTypeOk(arg RouteGetNexthopAttributeType) (ret RouteGetNexthopRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRouteGetNexthopAttributeType(arg *RouteGetNexthopAttributeType, val RouteGetNexthopRetType) {
+	*arg = &val
+}
+
+type RouteGetNexthopArgType = string
+type RouteGetNexthopRetType = string
+
+/*
+	types and functions for prefix
+*/
+
+// isNotNullableString
+type RouteGetPrefixAttributeType = *string
+
+func getRouteGetPrefixAttributeTypeOk(arg RouteGetPrefixAttributeType) (ret RouteGetPrefixRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRouteGetPrefixAttributeType(arg *RouteGetPrefixAttributeType, val RouteGetPrefixRetType) {
+	*arg = &val
+}
+
+type RouteGetPrefixArgType = string
+type RouteGetPrefixRetType = string
+
+/*
+	types and functions for routeId
+*/
+
+// isNotNullableString
+type RouteGetRouteIdAttributeType = *string
+
+func getRouteGetRouteIdAttributeTypeOk(arg RouteGetRouteIdAttributeType) (ret RouteGetRouteIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRouteGetRouteIdAttributeType(arg *RouteGetRouteIdAttributeType, val RouteGetRouteIdRetType) {
+	*arg = &val
+}
+
+type RouteGetRouteIdArgType = string
+type RouteGetRouteIdRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type RouteGetUpdatedAtAttributeType = *time.Time
+type RouteGetUpdatedAtArgType = time.Time
+type RouteGetUpdatedAtRetType = time.Time
+
+func getRouteGetUpdatedAtAttributeTypeOk(arg RouteGetUpdatedAtAttributeType) (ret RouteGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRouteGetUpdatedAtAttributeType(arg *RouteGetUpdatedAtAttributeType, val RouteGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // Route Object represents a network route.
 type Route struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt RouteGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels RouteGetLabelsAttributeType `json:"labels,omitempty"`
 	// Object that represents an IP address.
 	// REQUIRED
-	Nexthop *string `json:"nexthop"`
+	Nexthop RouteGetNexthopAttributeType `json:"nexthop"`
 	// Classless Inter-Domain Routing (CIDR).
 	// REQUIRED
-	Prefix *string `json:"prefix"`
+	Prefix RouteGetPrefixAttributeType `json:"prefix"`
 	// Universally Unique Identifier (UUID).
-	RouteId *string `json:"routeId,omitempty"`
+	RouteId RouteGetRouteIdAttributeType `json:"routeId,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt RouteGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _Route Route
@@ -42,10 +165,10 @@ type _Route Route
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewRoute(nexthop *string, prefix *string) *Route {
+func NewRoute(nexthop RouteGetNexthopArgType, prefix RouteGetPrefixArgType) *Route {
 	this := Route{}
-	this.Nexthop = nexthop
-	this.Prefix = prefix
+	setRouteGetNexthopAttributeType(&this.Nexthop, nexthop)
+	setRouteGetPrefixAttributeType(&this.Prefix, prefix)
 	return &this
 }
 
@@ -58,196 +181,150 @@ func NewRouteWithDefaults() *Route {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Route) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Route) GetCreatedAt() (res RouteGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Route) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Route) GetCreatedAtOk() (ret RouteGetCreatedAtRetType, ok bool) {
+	return getRouteGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Route) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Route) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Route) SetCreatedAt(v RouteGetCreatedAtRetType) {
+	setRouteGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Route) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Route) GetLabels() (res RouteGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Route) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Route) GetLabelsOk() (ret RouteGetLabelsRetType, ok bool) {
+	return getRouteGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Route) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Route) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Route) SetLabels(v RouteGetLabelsRetType) {
+	setRouteGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetNexthop returns the Nexthop field value
-func (o *Route) GetNexthop() *string {
-	if o == nil || IsNil(o.Nexthop) {
-		var ret *string
-		return ret
-	}
-
-	return o.Nexthop
+func (o *Route) GetNexthop() (ret RouteGetNexthopRetType) {
+	ret, _ = o.GetNexthopOk()
+	return ret
 }
 
 // GetNexthopOk returns a tuple with the Nexthop field value
 // and a boolean to check if the value has been set.
-func (o *Route) GetNexthopOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Nexthop, true
+func (o *Route) GetNexthopOk() (ret RouteGetNexthopRetType, ok bool) {
+	return getRouteGetNexthopAttributeTypeOk(o.Nexthop)
 }
 
 // SetNexthop sets field value
-func (o *Route) SetNexthop(v *string) {
-	o.Nexthop = v
+func (o *Route) SetNexthop(v RouteGetNexthopRetType) {
+	setRouteGetNexthopAttributeType(&o.Nexthop, v)
 }
 
 // GetPrefix returns the Prefix field value
-func (o *Route) GetPrefix() *string {
-	if o == nil || IsNil(o.Prefix) {
-		var ret *string
-		return ret
-	}
-
-	return o.Prefix
+func (o *Route) GetPrefix() (ret RouteGetPrefixRetType) {
+	ret, _ = o.GetPrefixOk()
+	return ret
 }
 
 // GetPrefixOk returns a tuple with the Prefix field value
 // and a boolean to check if the value has been set.
-func (o *Route) GetPrefixOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Prefix, true
+func (o *Route) GetPrefixOk() (ret RouteGetPrefixRetType, ok bool) {
+	return getRouteGetPrefixAttributeTypeOk(o.Prefix)
 }
 
 // SetPrefix sets field value
-func (o *Route) SetPrefix(v *string) {
-	o.Prefix = v
+func (o *Route) SetPrefix(v RouteGetPrefixRetType) {
+	setRouteGetPrefixAttributeType(&o.Prefix, v)
 }
 
 // GetRouteId returns the RouteId field value if set, zero value otherwise.
-func (o *Route) GetRouteId() *string {
-	if o == nil || IsNil(o.RouteId) {
-		var ret *string
-		return ret
-	}
-	return o.RouteId
+func (o *Route) GetRouteId() (res RouteGetRouteIdRetType) {
+	res, _ = o.GetRouteIdOk()
+	return
 }
 
 // GetRouteIdOk returns a tuple with the RouteId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Route) GetRouteIdOk() (*string, bool) {
-	if o == nil || IsNil(o.RouteId) {
-		return nil, false
-	}
-	return o.RouteId, true
+func (o *Route) GetRouteIdOk() (ret RouteGetRouteIdRetType, ok bool) {
+	return getRouteGetRouteIdAttributeTypeOk(o.RouteId)
 }
 
 // HasRouteId returns a boolean if a field has been set.
 func (o *Route) HasRouteId() bool {
-	if o != nil && !IsNil(o.RouteId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRouteIdOk()
+	return ok
 }
 
 // SetRouteId gets a reference to the given string and assigns it to the RouteId field.
-func (o *Route) SetRouteId(v *string) {
-	o.RouteId = v
+func (o *Route) SetRouteId(v RouteGetRouteIdRetType) {
+	setRouteGetRouteIdAttributeType(&o.RouteId, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Route) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Route) GetUpdatedAt() (res RouteGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Route) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Route) GetUpdatedAtOk() (ret RouteGetUpdatedAtRetType, ok bool) {
+	return getRouteGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Route) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Route) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Route) SetUpdatedAt(v RouteGetUpdatedAtRetType) {
+	setRouteGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o Route) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getRouteGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getRouteGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
+	}
+	if val, ok := getRouteGetNexthopAttributeTypeOk(o.Nexthop); ok {
+		toSerialize["Nexthop"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getRouteGetPrefixAttributeTypeOk(o.Prefix); ok {
+		toSerialize["Prefix"] = val
 	}
-	toSerialize["nexthop"] = o.Nexthop
-	toSerialize["prefix"] = o.Prefix
-	if !IsNil(o.RouteId) {
-		toSerialize["routeId"] = o.RouteId
+	if val, ok := getRouteGetRouteIdAttributeTypeOk(o.RouteId); ok {
+		toSerialize["RouteId"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getRouteGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_route_list_response.go b/services/iaas/model_route_list_response.go
index 705765b9b..619b41614 100644
--- a/services/iaas/model_route_list_response.go
+++ b/services/iaas/model_route_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the RouteListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &RouteListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type RouteListResponseGetItemsAttributeType = *[]Route
+type RouteListResponseGetItemsArgType = []Route
+type RouteListResponseGetItemsRetType = []Route
+
+func getRouteListResponseGetItemsAttributeTypeOk(arg RouteListResponseGetItemsAttributeType) (ret RouteListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setRouteListResponseGetItemsAttributeType(arg *RouteListResponseGetItemsAttributeType, val RouteListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // RouteListResponse Route list response.
 type RouteListResponse struct {
 	// A list of routes.
 	// REQUIRED
-	Items *[]Route `json:"items"`
+	Items RouteListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _RouteListResponse RouteListResponse
@@ -30,9 +50,9 @@ type _RouteListResponse RouteListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewRouteListResponse(items *[]Route) *RouteListResponse {
+func NewRouteListResponse(items RouteListResponseGetItemsArgType) *RouteListResponse {
 	this := RouteListResponse{}
-	this.Items = items
+	setRouteListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewRouteListResponseWithDefaults() *RouteListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *RouteListResponse) GetItems() *[]Route {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Route
-		return ret
-	}
-
-	return o.Items
+func (o *RouteListResponse) GetItems() (ret RouteListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *RouteListResponse) GetItemsOk() (*[]Route, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *RouteListResponse) GetItemsOk() (ret RouteListResponseGetItemsRetType, ok bool) {
+	return getRouteListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *RouteListResponse) SetItems(v *[]Route) {
-	o.Items = v
+func (o *RouteListResponse) SetItems(v RouteListResponseGetItemsRetType) {
+	setRouteListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o RouteListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getRouteListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_security_group.go b/services/iaas/model_security_group.go
index 92db9f2ee..8a0ba7127 100644
--- a/services/iaas/model_security_group.go
+++ b/services/iaas/model_security_group.go
@@ -18,25 +18,188 @@ import (
 // checks if the SecurityGroup type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &SecurityGroup{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type SecurityGroupGetCreatedAtAttributeType = *time.Time
+type SecurityGroupGetCreatedAtArgType = time.Time
+type SecurityGroupGetCreatedAtRetType = time.Time
+
+func getSecurityGroupGetCreatedAtAttributeTypeOk(arg SecurityGroupGetCreatedAtAttributeType) (ret SecurityGroupGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupGetCreatedAtAttributeType(arg *SecurityGroupGetCreatedAtAttributeType, val SecurityGroupGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type SecurityGroupGetDescriptionAttributeType = *string
+
+func getSecurityGroupGetDescriptionAttributeTypeOk(arg SecurityGroupGetDescriptionAttributeType) (ret SecurityGroupGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupGetDescriptionAttributeType(arg *SecurityGroupGetDescriptionAttributeType, val SecurityGroupGetDescriptionRetType) {
+	*arg = &val
+}
+
+type SecurityGroupGetDescriptionArgType = string
+type SecurityGroupGetDescriptionRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type SecurityGroupGetIdAttributeType = *string
+
+func getSecurityGroupGetIdAttributeTypeOk(arg SecurityGroupGetIdAttributeType) (ret SecurityGroupGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupGetIdAttributeType(arg *SecurityGroupGetIdAttributeType, val SecurityGroupGetIdRetType) {
+	*arg = &val
+}
+
+type SecurityGroupGetIdArgType = string
+type SecurityGroupGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type SecurityGroupGetLabelsAttributeType = *map[string]interface{}
+type SecurityGroupGetLabelsArgType = map[string]interface{}
+type SecurityGroupGetLabelsRetType = map[string]interface{}
+
+func getSecurityGroupGetLabelsAttributeTypeOk(arg SecurityGroupGetLabelsAttributeType) (ret SecurityGroupGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupGetLabelsAttributeType(arg *SecurityGroupGetLabelsAttributeType, val SecurityGroupGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type SecurityGroupGetNameAttributeType = *string
+
+func getSecurityGroupGetNameAttributeTypeOk(arg SecurityGroupGetNameAttributeType) (ret SecurityGroupGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupGetNameAttributeType(arg *SecurityGroupGetNameAttributeType, val SecurityGroupGetNameRetType) {
+	*arg = &val
+}
+
+type SecurityGroupGetNameArgType = string
+type SecurityGroupGetNameRetType = string
+
+/*
+	types and functions for rules
+*/
+
+// isArray
+type SecurityGroupGetRulesAttributeType = *[]SecurityGroupRule
+type SecurityGroupGetRulesArgType = []SecurityGroupRule
+type SecurityGroupGetRulesRetType = []SecurityGroupRule
+
+func getSecurityGroupGetRulesAttributeTypeOk(arg SecurityGroupGetRulesAttributeType) (ret SecurityGroupGetRulesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupGetRulesAttributeType(arg *SecurityGroupGetRulesAttributeType, val SecurityGroupGetRulesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for stateful
+*/
+
+// isBoolean
+type SecurityGroupgetStatefulAttributeType = *bool
+type SecurityGroupgetStatefulArgType = bool
+type SecurityGroupgetStatefulRetType = bool
+
+func getSecurityGroupgetStatefulAttributeTypeOk(arg SecurityGroupgetStatefulAttributeType) (ret SecurityGroupgetStatefulRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupgetStatefulAttributeType(arg *SecurityGroupgetStatefulAttributeType, val SecurityGroupgetStatefulRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type SecurityGroupGetUpdatedAtAttributeType = *time.Time
+type SecurityGroupGetUpdatedAtArgType = time.Time
+type SecurityGroupGetUpdatedAtRetType = time.Time
+
+func getSecurityGroupGetUpdatedAtAttributeTypeOk(arg SecurityGroupGetUpdatedAtAttributeType) (ret SecurityGroupGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupGetUpdatedAtAttributeType(arg *SecurityGroupGetUpdatedAtAttributeType, val SecurityGroupGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // SecurityGroup Object that represents a security group.
 type SecurityGroup struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt SecurityGroupGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description SecurityGroupGetDescriptionAttributeType `json:"description,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id SecurityGroupGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels SecurityGroupGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name SecurityGroupGetNameAttributeType `json:"name"`
 	// A list containing security group rule objects.
-	Rules *[]SecurityGroupRule `json:"rules,omitempty"`
+	Rules SecurityGroupGetRulesAttributeType `json:"rules,omitempty"`
 	// Shows if a security group is stateful or stateless. You can only have one type of security groups per network interface/server.
-	Stateful *bool `json:"stateful,omitempty"`
+	Stateful SecurityGroupgetStatefulAttributeType `json:"stateful,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt SecurityGroupGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _SecurityGroup SecurityGroup
@@ -45,11 +208,9 @@ type _SecurityGroup SecurityGroup
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewSecurityGroup(name *string) *SecurityGroup {
+func NewSecurityGroup(name SecurityGroupGetNameArgType) *SecurityGroup {
 	this := SecurityGroup{}
-	this.Name = name
-	var stateful bool = true
-	this.Stateful = &stateful
+	setSecurityGroupGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -64,276 +225,208 @@ func NewSecurityGroupWithDefaults() *SecurityGroup {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *SecurityGroup) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *SecurityGroup) GetCreatedAt() (res SecurityGroupGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *SecurityGroup) GetCreatedAtOk() (ret SecurityGroupGetCreatedAtRetType, ok bool) {
+	return getSecurityGroupGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *SecurityGroup) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *SecurityGroup) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *SecurityGroup) SetCreatedAt(v SecurityGroupGetCreatedAtRetType) {
+	setSecurityGroupGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *SecurityGroup) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *SecurityGroup) GetDescription() (res SecurityGroupGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *SecurityGroup) GetDescriptionOk() (ret SecurityGroupGetDescriptionRetType, ok bool) {
+	return getSecurityGroupGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *SecurityGroup) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *SecurityGroup) SetDescription(v *string) {
-	o.Description = v
+func (o *SecurityGroup) SetDescription(v SecurityGroupGetDescriptionRetType) {
+	setSecurityGroupGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *SecurityGroup) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *SecurityGroup) GetId() (res SecurityGroupGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *SecurityGroup) GetIdOk() (ret SecurityGroupGetIdRetType, ok bool) {
+	return getSecurityGroupGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *SecurityGroup) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *SecurityGroup) SetId(v *string) {
-	o.Id = v
+func (o *SecurityGroup) SetId(v SecurityGroupGetIdRetType) {
+	setSecurityGroupGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *SecurityGroup) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *SecurityGroup) GetLabels() (res SecurityGroupGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *SecurityGroup) GetLabelsOk() (ret SecurityGroupGetLabelsRetType, ok bool) {
+	return getSecurityGroupGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *SecurityGroup) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *SecurityGroup) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *SecurityGroup) SetLabels(v SecurityGroupGetLabelsRetType) {
+	setSecurityGroupGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value
-func (o *SecurityGroup) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *SecurityGroup) GetName() (ret SecurityGroupGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *SecurityGroup) GetNameOk() (ret SecurityGroupGetNameRetType, ok bool) {
+	return getSecurityGroupGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *SecurityGroup) SetName(v *string) {
-	o.Name = v
+func (o *SecurityGroup) SetName(v SecurityGroupGetNameRetType) {
+	setSecurityGroupGetNameAttributeType(&o.Name, v)
 }
 
 // GetRules returns the Rules field value if set, zero value otherwise.
-func (o *SecurityGroup) GetRules() *[]SecurityGroupRule {
-	if o == nil || IsNil(o.Rules) {
-		var ret *[]SecurityGroupRule
-		return ret
-	}
-	return o.Rules
+func (o *SecurityGroup) GetRules() (res SecurityGroupGetRulesRetType) {
+	res, _ = o.GetRulesOk()
+	return
 }
 
 // GetRulesOk returns a tuple with the Rules field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetRulesOk() (*[]SecurityGroupRule, bool) {
-	if o == nil || IsNil(o.Rules) {
-		return nil, false
-	}
-	return o.Rules, true
+func (o *SecurityGroup) GetRulesOk() (ret SecurityGroupGetRulesRetType, ok bool) {
+	return getSecurityGroupGetRulesAttributeTypeOk(o.Rules)
 }
 
 // HasRules returns a boolean if a field has been set.
 func (o *SecurityGroup) HasRules() bool {
-	if o != nil && !IsNil(o.Rules) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRulesOk()
+	return ok
 }
 
 // SetRules gets a reference to the given []SecurityGroupRule and assigns it to the Rules field.
-func (o *SecurityGroup) SetRules(v *[]SecurityGroupRule) {
-	o.Rules = v
+func (o *SecurityGroup) SetRules(v SecurityGroupGetRulesRetType) {
+	setSecurityGroupGetRulesAttributeType(&o.Rules, v)
 }
 
 // GetStateful returns the Stateful field value if set, zero value otherwise.
-func (o *SecurityGroup) GetStateful() *bool {
-	if o == nil || IsNil(o.Stateful) {
-		var ret *bool
-		return ret
-	}
-	return o.Stateful
+func (o *SecurityGroup) GetStateful() (res SecurityGroupgetStatefulRetType) {
+	res, _ = o.GetStatefulOk()
+	return
 }
 
 // GetStatefulOk returns a tuple with the Stateful field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetStatefulOk() (*bool, bool) {
-	if o == nil || IsNil(o.Stateful) {
-		return nil, false
-	}
-	return o.Stateful, true
+func (o *SecurityGroup) GetStatefulOk() (ret SecurityGroupgetStatefulRetType, ok bool) {
+	return getSecurityGroupgetStatefulAttributeTypeOk(o.Stateful)
 }
 
 // HasStateful returns a boolean if a field has been set.
 func (o *SecurityGroup) HasStateful() bool {
-	if o != nil && !IsNil(o.Stateful) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatefulOk()
+	return ok
 }
 
 // SetStateful gets a reference to the given bool and assigns it to the Stateful field.
-func (o *SecurityGroup) SetStateful(v *bool) {
-	o.Stateful = v
+func (o *SecurityGroup) SetStateful(v SecurityGroupgetStatefulRetType) {
+	setSecurityGroupgetStatefulAttributeType(&o.Stateful, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *SecurityGroup) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *SecurityGroup) GetUpdatedAt() (res SecurityGroupGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroup) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *SecurityGroup) GetUpdatedAtOk() (ret SecurityGroupGetUpdatedAtRetType, ok bool) {
+	return getSecurityGroupGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *SecurityGroup) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *SecurityGroup) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *SecurityGroup) SetUpdatedAt(v SecurityGroupGetUpdatedAtRetType) {
+	setSecurityGroupGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o SecurityGroup) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getSecurityGroupGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getSecurityGroupGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
 	}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getSecurityGroupGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getSecurityGroupGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getSecurityGroupGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Rules) {
-		toSerialize["rules"] = o.Rules
+	if val, ok := getSecurityGroupGetRulesAttributeTypeOk(o.Rules); ok {
+		toSerialize["Rules"] = val
 	}
-	if !IsNil(o.Stateful) {
-		toSerialize["stateful"] = o.Stateful
+	if val, ok := getSecurityGroupgetStatefulAttributeTypeOk(o.Stateful); ok {
+		toSerialize["Stateful"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getSecurityGroupGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_security_group_list_response.go b/services/iaas/model_security_group_list_response.go
index 847bf4b98..a45766896 100644
--- a/services/iaas/model_security_group_list_response.go
+++ b/services/iaas/model_security_group_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the SecurityGroupListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &SecurityGroupListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type SecurityGroupListResponseGetItemsAttributeType = *[]SecurityGroup
+type SecurityGroupListResponseGetItemsArgType = []SecurityGroup
+type SecurityGroupListResponseGetItemsRetType = []SecurityGroup
+
+func getSecurityGroupListResponseGetItemsAttributeTypeOk(arg SecurityGroupListResponseGetItemsAttributeType) (ret SecurityGroupListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupListResponseGetItemsAttributeType(arg *SecurityGroupListResponseGetItemsAttributeType, val SecurityGroupListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // SecurityGroupListResponse Security group list response.
 type SecurityGroupListResponse struct {
 	// A list containing security group objects.
 	// REQUIRED
-	Items *[]SecurityGroup `json:"items"`
+	Items SecurityGroupListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _SecurityGroupListResponse SecurityGroupListResponse
@@ -30,9 +50,9 @@ type _SecurityGroupListResponse SecurityGroupListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewSecurityGroupListResponse(items *[]SecurityGroup) *SecurityGroupListResponse {
+func NewSecurityGroupListResponse(items SecurityGroupListResponseGetItemsArgType) *SecurityGroupListResponse {
 	this := SecurityGroupListResponse{}
-	this.Items = items
+	setSecurityGroupListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewSecurityGroupListResponseWithDefaults() *SecurityGroupListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *SecurityGroupListResponse) GetItems() *[]SecurityGroup {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]SecurityGroup
-		return ret
-	}
-
-	return o.Items
+func (o *SecurityGroupListResponse) GetItems() (ret SecurityGroupListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupListResponse) GetItemsOk() (*[]SecurityGroup, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *SecurityGroupListResponse) GetItemsOk() (ret SecurityGroupListResponseGetItemsRetType, ok bool) {
+	return getSecurityGroupListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *SecurityGroupListResponse) SetItems(v *[]SecurityGroup) {
-	o.Items = v
+func (o *SecurityGroupListResponse) SetItems(v SecurityGroupListResponseGetItemsRetType) {
+	setSecurityGroupListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o SecurityGroupListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getSecurityGroupListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_security_group_rule.go b/services/iaas/model_security_group_rule.go
index dfa9d6881..86d7751a6 100644
--- a/services/iaas/model_security_group_rule.go
+++ b/services/iaas/model_security_group_rule.go
@@ -17,26 +17,233 @@ import (
 // checks if the SecurityGroupRule type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &SecurityGroupRule{}
 
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type SecurityGroupRuleGetDescriptionAttributeType = *string
+
+func getSecurityGroupRuleGetDescriptionAttributeTypeOk(arg SecurityGroupRuleGetDescriptionAttributeType) (ret SecurityGroupRuleGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetDescriptionAttributeType(arg *SecurityGroupRuleGetDescriptionAttributeType, val SecurityGroupRuleGetDescriptionRetType) {
+	*arg = &val
+}
+
+type SecurityGroupRuleGetDescriptionArgType = string
+type SecurityGroupRuleGetDescriptionRetType = string
+
+/*
+	types and functions for direction
+*/
+
+// isNotNullableString
+type SecurityGroupRuleGetDirectionAttributeType = *string
+
+func getSecurityGroupRuleGetDirectionAttributeTypeOk(arg SecurityGroupRuleGetDirectionAttributeType) (ret SecurityGroupRuleGetDirectionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetDirectionAttributeType(arg *SecurityGroupRuleGetDirectionAttributeType, val SecurityGroupRuleGetDirectionRetType) {
+	*arg = &val
+}
+
+type SecurityGroupRuleGetDirectionArgType = string
+type SecurityGroupRuleGetDirectionRetType = string
+
+/*
+	types and functions for ethertype
+*/
+
+// isNotNullableString
+type SecurityGroupRuleGetEthertypeAttributeType = *string
+
+func getSecurityGroupRuleGetEthertypeAttributeTypeOk(arg SecurityGroupRuleGetEthertypeAttributeType) (ret SecurityGroupRuleGetEthertypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetEthertypeAttributeType(arg *SecurityGroupRuleGetEthertypeAttributeType, val SecurityGroupRuleGetEthertypeRetType) {
+	*arg = &val
+}
+
+type SecurityGroupRuleGetEthertypeArgType = string
+type SecurityGroupRuleGetEthertypeRetType = string
+
+/*
+	types and functions for icmpParameters
+*/
+
+// isModel
+type SecurityGroupRuleGetIcmpParametersAttributeType = *ICMPParameters
+type SecurityGroupRuleGetIcmpParametersArgType = ICMPParameters
+type SecurityGroupRuleGetIcmpParametersRetType = ICMPParameters
+
+func getSecurityGroupRuleGetIcmpParametersAttributeTypeOk(arg SecurityGroupRuleGetIcmpParametersAttributeType) (ret SecurityGroupRuleGetIcmpParametersRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetIcmpParametersAttributeType(arg *SecurityGroupRuleGetIcmpParametersAttributeType, val SecurityGroupRuleGetIcmpParametersRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type SecurityGroupRuleGetIdAttributeType = *string
+
+func getSecurityGroupRuleGetIdAttributeTypeOk(arg SecurityGroupRuleGetIdAttributeType) (ret SecurityGroupRuleGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetIdAttributeType(arg *SecurityGroupRuleGetIdAttributeType, val SecurityGroupRuleGetIdRetType) {
+	*arg = &val
+}
+
+type SecurityGroupRuleGetIdArgType = string
+type SecurityGroupRuleGetIdRetType = string
+
+/*
+	types and functions for ipRange
+*/
+
+// isNotNullableString
+type SecurityGroupRuleGetIpRangeAttributeType = *string
+
+func getSecurityGroupRuleGetIpRangeAttributeTypeOk(arg SecurityGroupRuleGetIpRangeAttributeType) (ret SecurityGroupRuleGetIpRangeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetIpRangeAttributeType(arg *SecurityGroupRuleGetIpRangeAttributeType, val SecurityGroupRuleGetIpRangeRetType) {
+	*arg = &val
+}
+
+type SecurityGroupRuleGetIpRangeArgType = string
+type SecurityGroupRuleGetIpRangeRetType = string
+
+/*
+	types and functions for portRange
+*/
+
+// isModel
+type SecurityGroupRuleGetPortRangeAttributeType = *PortRange
+type SecurityGroupRuleGetPortRangeArgType = PortRange
+type SecurityGroupRuleGetPortRangeRetType = PortRange
+
+func getSecurityGroupRuleGetPortRangeAttributeTypeOk(arg SecurityGroupRuleGetPortRangeAttributeType) (ret SecurityGroupRuleGetPortRangeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetPortRangeAttributeType(arg *SecurityGroupRuleGetPortRangeAttributeType, val SecurityGroupRuleGetPortRangeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for remoteSecurityGroupId
+*/
+
+// isNotNullableString
+type SecurityGroupRuleGetRemoteSecurityGroupIdAttributeType = *string
+
+func getSecurityGroupRuleGetRemoteSecurityGroupIdAttributeTypeOk(arg SecurityGroupRuleGetRemoteSecurityGroupIdAttributeType) (ret SecurityGroupRuleGetRemoteSecurityGroupIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType(arg *SecurityGroupRuleGetRemoteSecurityGroupIdAttributeType, val SecurityGroupRuleGetRemoteSecurityGroupIdRetType) {
+	*arg = &val
+}
+
+type SecurityGroupRuleGetRemoteSecurityGroupIdArgType = string
+type SecurityGroupRuleGetRemoteSecurityGroupIdRetType = string
+
+/*
+	types and functions for securityGroupId
+*/
+
+// isNotNullableString
+type SecurityGroupRuleGetSecurityGroupIdAttributeType = *string
+
+func getSecurityGroupRuleGetSecurityGroupIdAttributeTypeOk(arg SecurityGroupRuleGetSecurityGroupIdAttributeType) (ret SecurityGroupRuleGetSecurityGroupIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetSecurityGroupIdAttributeType(arg *SecurityGroupRuleGetSecurityGroupIdAttributeType, val SecurityGroupRuleGetSecurityGroupIdRetType) {
+	*arg = &val
+}
+
+type SecurityGroupRuleGetSecurityGroupIdArgType = string
+type SecurityGroupRuleGetSecurityGroupIdRetType = string
+
+/*
+	types and functions for protocol
+*/
+
+// isModel
+type SecurityGroupRuleGetProtocolAttributeType = *Protocol
+type SecurityGroupRuleGetProtocolArgType = Protocol
+type SecurityGroupRuleGetProtocolRetType = Protocol
+
+func getSecurityGroupRuleGetProtocolAttributeTypeOk(arg SecurityGroupRuleGetProtocolAttributeType) (ret SecurityGroupRuleGetProtocolRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleGetProtocolAttributeType(arg *SecurityGroupRuleGetProtocolAttributeType, val SecurityGroupRuleGetProtocolRetType) {
+	*arg = &val
+}
+
 // SecurityGroupRule Object that represents a security group rule.
 type SecurityGroupRule struct {
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description SecurityGroupRuleGetDescriptionAttributeType `json:"description,omitempty"`
 	// The direction of the traffic which the rule should match.
 	// REQUIRED
-	Direction *string `json:"direction"`
+	Direction SecurityGroupRuleGetDirectionAttributeType `json:"direction"`
 	// The ethertype which the rule should match.
-	Ethertype      *string         `json:"ethertype,omitempty"`
-	IcmpParameters *ICMPParameters `json:"icmpParameters,omitempty"`
+	Ethertype      SecurityGroupRuleGetEthertypeAttributeType      `json:"ethertype,omitempty"`
+	IcmpParameters SecurityGroupRuleGetIcmpParametersAttributeType `json:"icmpParameters,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id SecurityGroupRuleGetIdAttributeType `json:"id,omitempty"`
 	// Classless Inter-Domain Routing (CIDR).
-	IpRange   *string    `json:"ipRange,omitempty"`
-	PortRange *PortRange `json:"portRange,omitempty"`
+	IpRange   SecurityGroupRuleGetIpRangeAttributeType   `json:"ipRange,omitempty"`
+	PortRange SecurityGroupRuleGetPortRangeAttributeType `json:"portRange,omitempty"`
 	// Universally Unique Identifier (UUID).
-	RemoteSecurityGroupId *string `json:"remoteSecurityGroupId,omitempty"`
+	RemoteSecurityGroupId SecurityGroupRuleGetRemoteSecurityGroupIdAttributeType `json:"remoteSecurityGroupId,omitempty"`
 	// Universally Unique Identifier (UUID).
-	SecurityGroupId *string   `json:"securityGroupId,omitempty"`
-	Protocol        *Protocol `json:"protocol,omitempty"`
+	SecurityGroupId SecurityGroupRuleGetSecurityGroupIdAttributeType `json:"securityGroupId,omitempty"`
+	Protocol        SecurityGroupRuleGetProtocolAttributeType        `json:"protocol,omitempty"`
 }
 
 type _SecurityGroupRule SecurityGroupRule
@@ -45,11 +252,9 @@ type _SecurityGroupRule SecurityGroupRule
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewSecurityGroupRule(direction *string) *SecurityGroupRule {
+func NewSecurityGroupRule(direction SecurityGroupRuleGetDirectionArgType) *SecurityGroupRule {
 	this := SecurityGroupRule{}
-	this.Direction = direction
-	var ethertype string = "IPv4"
-	this.Ethertype = &ethertype
+	setSecurityGroupRuleGetDirectionAttributeType(&this.Direction, direction)
 	return &this
 }
 
@@ -64,346 +269,260 @@ func NewSecurityGroupRuleWithDefaults() *SecurityGroupRule {
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *SecurityGroupRule) GetDescription() (res SecurityGroupRuleGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *SecurityGroupRule) GetDescriptionOk() (ret SecurityGroupRuleGetDescriptionRetType, ok bool) {
+	return getSecurityGroupRuleGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *SecurityGroupRule) SetDescription(v *string) {
-	o.Description = v
+func (o *SecurityGroupRule) SetDescription(v SecurityGroupRuleGetDescriptionRetType) {
+	setSecurityGroupRuleGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetDirection returns the Direction field value
-func (o *SecurityGroupRule) GetDirection() *string {
-	if o == nil || IsNil(o.Direction) {
-		var ret *string
-		return ret
-	}
-
-	return o.Direction
+func (o *SecurityGroupRule) GetDirection() (ret SecurityGroupRuleGetDirectionRetType) {
+	ret, _ = o.GetDirectionOk()
+	return ret
 }
 
 // GetDirectionOk returns a tuple with the Direction field value
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetDirectionOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Direction, true
+func (o *SecurityGroupRule) GetDirectionOk() (ret SecurityGroupRuleGetDirectionRetType, ok bool) {
+	return getSecurityGroupRuleGetDirectionAttributeTypeOk(o.Direction)
 }
 
 // SetDirection sets field value
-func (o *SecurityGroupRule) SetDirection(v *string) {
-	o.Direction = v
+func (o *SecurityGroupRule) SetDirection(v SecurityGroupRuleGetDirectionRetType) {
+	setSecurityGroupRuleGetDirectionAttributeType(&o.Direction, v)
 }
 
 // GetEthertype returns the Ethertype field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetEthertype() *string {
-	if o == nil || IsNil(o.Ethertype) {
-		var ret *string
-		return ret
-	}
-	return o.Ethertype
+func (o *SecurityGroupRule) GetEthertype() (res SecurityGroupRuleGetEthertypeRetType) {
+	res, _ = o.GetEthertypeOk()
+	return
 }
 
 // GetEthertypeOk returns a tuple with the Ethertype field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetEthertypeOk() (*string, bool) {
-	if o == nil || IsNil(o.Ethertype) {
-		return nil, false
-	}
-	return o.Ethertype, true
+func (o *SecurityGroupRule) GetEthertypeOk() (ret SecurityGroupRuleGetEthertypeRetType, ok bool) {
+	return getSecurityGroupRuleGetEthertypeAttributeTypeOk(o.Ethertype)
 }
 
 // HasEthertype returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasEthertype() bool {
-	if o != nil && !IsNil(o.Ethertype) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetEthertypeOk()
+	return ok
 }
 
 // SetEthertype gets a reference to the given string and assigns it to the Ethertype field.
-func (o *SecurityGroupRule) SetEthertype(v *string) {
-	o.Ethertype = v
+func (o *SecurityGroupRule) SetEthertype(v SecurityGroupRuleGetEthertypeRetType) {
+	setSecurityGroupRuleGetEthertypeAttributeType(&o.Ethertype, v)
 }
 
 // GetIcmpParameters returns the IcmpParameters field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetIcmpParameters() *ICMPParameters {
-	if o == nil || IsNil(o.IcmpParameters) {
-		var ret *ICMPParameters
-		return ret
-	}
-	return o.IcmpParameters
+func (o *SecurityGroupRule) GetIcmpParameters() (res SecurityGroupRuleGetIcmpParametersRetType) {
+	res, _ = o.GetIcmpParametersOk()
+	return
 }
 
 // GetIcmpParametersOk returns a tuple with the IcmpParameters field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetIcmpParametersOk() (*ICMPParameters, bool) {
-	if o == nil || IsNil(o.IcmpParameters) {
-		return nil, false
-	}
-	return o.IcmpParameters, true
+func (o *SecurityGroupRule) GetIcmpParametersOk() (ret SecurityGroupRuleGetIcmpParametersRetType, ok bool) {
+	return getSecurityGroupRuleGetIcmpParametersAttributeTypeOk(o.IcmpParameters)
 }
 
 // HasIcmpParameters returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasIcmpParameters() bool {
-	if o != nil && !IsNil(o.IcmpParameters) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIcmpParametersOk()
+	return ok
 }
 
 // SetIcmpParameters gets a reference to the given ICMPParameters and assigns it to the IcmpParameters field.
-func (o *SecurityGroupRule) SetIcmpParameters(v *ICMPParameters) {
-	o.IcmpParameters = v
+func (o *SecurityGroupRule) SetIcmpParameters(v SecurityGroupRuleGetIcmpParametersRetType) {
+	setSecurityGroupRuleGetIcmpParametersAttributeType(&o.IcmpParameters, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *SecurityGroupRule) GetId() (res SecurityGroupRuleGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *SecurityGroupRule) GetIdOk() (ret SecurityGroupRuleGetIdRetType, ok bool) {
+	return getSecurityGroupRuleGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *SecurityGroupRule) SetId(v *string) {
-	o.Id = v
+func (o *SecurityGroupRule) SetId(v SecurityGroupRuleGetIdRetType) {
+	setSecurityGroupRuleGetIdAttributeType(&o.Id, v)
 }
 
 // GetIpRange returns the IpRange field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetIpRange() *string {
-	if o == nil || IsNil(o.IpRange) {
-		var ret *string
-		return ret
-	}
-	return o.IpRange
+func (o *SecurityGroupRule) GetIpRange() (res SecurityGroupRuleGetIpRangeRetType) {
+	res, _ = o.GetIpRangeOk()
+	return
 }
 
 // GetIpRangeOk returns a tuple with the IpRange field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetIpRangeOk() (*string, bool) {
-	if o == nil || IsNil(o.IpRange) {
-		return nil, false
-	}
-	return o.IpRange, true
+func (o *SecurityGroupRule) GetIpRangeOk() (ret SecurityGroupRuleGetIpRangeRetType, ok bool) {
+	return getSecurityGroupRuleGetIpRangeAttributeTypeOk(o.IpRange)
 }
 
 // HasIpRange returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasIpRange() bool {
-	if o != nil && !IsNil(o.IpRange) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpRangeOk()
+	return ok
 }
 
 // SetIpRange gets a reference to the given string and assigns it to the IpRange field.
-func (o *SecurityGroupRule) SetIpRange(v *string) {
-	o.IpRange = v
+func (o *SecurityGroupRule) SetIpRange(v SecurityGroupRuleGetIpRangeRetType) {
+	setSecurityGroupRuleGetIpRangeAttributeType(&o.IpRange, v)
 }
 
 // GetPortRange returns the PortRange field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetPortRange() *PortRange {
-	if o == nil || IsNil(o.PortRange) {
-		var ret *PortRange
-		return ret
-	}
-	return o.PortRange
+func (o *SecurityGroupRule) GetPortRange() (res SecurityGroupRuleGetPortRangeRetType) {
+	res, _ = o.GetPortRangeOk()
+	return
 }
 
 // GetPortRangeOk returns a tuple with the PortRange field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetPortRangeOk() (*PortRange, bool) {
-	if o == nil || IsNil(o.PortRange) {
-		return nil, false
-	}
-	return o.PortRange, true
+func (o *SecurityGroupRule) GetPortRangeOk() (ret SecurityGroupRuleGetPortRangeRetType, ok bool) {
+	return getSecurityGroupRuleGetPortRangeAttributeTypeOk(o.PortRange)
 }
 
 // HasPortRange returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasPortRange() bool {
-	if o != nil && !IsNil(o.PortRange) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPortRangeOk()
+	return ok
 }
 
 // SetPortRange gets a reference to the given PortRange and assigns it to the PortRange field.
-func (o *SecurityGroupRule) SetPortRange(v *PortRange) {
-	o.PortRange = v
+func (o *SecurityGroupRule) SetPortRange(v SecurityGroupRuleGetPortRangeRetType) {
+	setSecurityGroupRuleGetPortRangeAttributeType(&o.PortRange, v)
 }
 
 // GetRemoteSecurityGroupId returns the RemoteSecurityGroupId field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetRemoteSecurityGroupId() *string {
-	if o == nil || IsNil(o.RemoteSecurityGroupId) {
-		var ret *string
-		return ret
-	}
-	return o.RemoteSecurityGroupId
+func (o *SecurityGroupRule) GetRemoteSecurityGroupId() (res SecurityGroupRuleGetRemoteSecurityGroupIdRetType) {
+	res, _ = o.GetRemoteSecurityGroupIdOk()
+	return
 }
 
 // GetRemoteSecurityGroupIdOk returns a tuple with the RemoteSecurityGroupId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetRemoteSecurityGroupIdOk() (*string, bool) {
-	if o == nil || IsNil(o.RemoteSecurityGroupId) {
-		return nil, false
-	}
-	return o.RemoteSecurityGroupId, true
+func (o *SecurityGroupRule) GetRemoteSecurityGroupIdOk() (ret SecurityGroupRuleGetRemoteSecurityGroupIdRetType, ok bool) {
+	return getSecurityGroupRuleGetRemoteSecurityGroupIdAttributeTypeOk(o.RemoteSecurityGroupId)
 }
 
 // HasRemoteSecurityGroupId returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasRemoteSecurityGroupId() bool {
-	if o != nil && !IsNil(o.RemoteSecurityGroupId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetRemoteSecurityGroupIdOk()
+	return ok
 }
 
 // SetRemoteSecurityGroupId gets a reference to the given string and assigns it to the RemoteSecurityGroupId field.
-func (o *SecurityGroupRule) SetRemoteSecurityGroupId(v *string) {
-	o.RemoteSecurityGroupId = v
+func (o *SecurityGroupRule) SetRemoteSecurityGroupId(v SecurityGroupRuleGetRemoteSecurityGroupIdRetType) {
+	setSecurityGroupRuleGetRemoteSecurityGroupIdAttributeType(&o.RemoteSecurityGroupId, v)
 }
 
 // GetSecurityGroupId returns the SecurityGroupId field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetSecurityGroupId() *string {
-	if o == nil || IsNil(o.SecurityGroupId) {
-		var ret *string
-		return ret
-	}
-	return o.SecurityGroupId
+func (o *SecurityGroupRule) GetSecurityGroupId() (res SecurityGroupRuleGetSecurityGroupIdRetType) {
+	res, _ = o.GetSecurityGroupIdOk()
+	return
 }
 
 // GetSecurityGroupIdOk returns a tuple with the SecurityGroupId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetSecurityGroupIdOk() (*string, bool) {
-	if o == nil || IsNil(o.SecurityGroupId) {
-		return nil, false
-	}
-	return o.SecurityGroupId, true
+func (o *SecurityGroupRule) GetSecurityGroupIdOk() (ret SecurityGroupRuleGetSecurityGroupIdRetType, ok bool) {
+	return getSecurityGroupRuleGetSecurityGroupIdAttributeTypeOk(o.SecurityGroupId)
 }
 
 // HasSecurityGroupId returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasSecurityGroupId() bool {
-	if o != nil && !IsNil(o.SecurityGroupId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupIdOk()
+	return ok
 }
 
 // SetSecurityGroupId gets a reference to the given string and assigns it to the SecurityGroupId field.
-func (o *SecurityGroupRule) SetSecurityGroupId(v *string) {
-	o.SecurityGroupId = v
+func (o *SecurityGroupRule) SetSecurityGroupId(v SecurityGroupRuleGetSecurityGroupIdRetType) {
+	setSecurityGroupRuleGetSecurityGroupIdAttributeType(&o.SecurityGroupId, v)
 }
 
 // GetProtocol returns the Protocol field value if set, zero value otherwise.
-func (o *SecurityGroupRule) GetProtocol() *Protocol {
-	if o == nil || IsNil(o.Protocol) {
-		var ret *Protocol
-		return ret
-	}
-	return o.Protocol
+func (o *SecurityGroupRule) GetProtocol() (res SecurityGroupRuleGetProtocolRetType) {
+	res, _ = o.GetProtocolOk()
+	return
 }
 
 // GetProtocolOk returns a tuple with the Protocol field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRule) GetProtocolOk() (*Protocol, bool) {
-	if o == nil || IsNil(o.Protocol) {
-		return nil, false
-	}
-	return o.Protocol, true
+func (o *SecurityGroupRule) GetProtocolOk() (ret SecurityGroupRuleGetProtocolRetType, ok bool) {
+	return getSecurityGroupRuleGetProtocolAttributeTypeOk(o.Protocol)
 }
 
 // HasProtocol returns a boolean if a field has been set.
 func (o *SecurityGroupRule) HasProtocol() bool {
-	if o != nil && !IsNil(o.Protocol) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProtocolOk()
+	return ok
 }
 
 // SetProtocol gets a reference to the given Protocol and assigns it to the Protocol field.
-func (o *SecurityGroupRule) SetProtocol(v *Protocol) {
-	o.Protocol = v
+func (o *SecurityGroupRule) SetProtocol(v SecurityGroupRuleGetProtocolRetType) {
+	setSecurityGroupRuleGetProtocolAttributeType(&o.Protocol, v)
 }
 
 func (o SecurityGroupRule) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getSecurityGroupRuleGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
+	}
+	if val, ok := getSecurityGroupRuleGetDirectionAttributeTypeOk(o.Direction); ok {
+		toSerialize["Direction"] = val
 	}
-	toSerialize["direction"] = o.Direction
-	if !IsNil(o.Ethertype) {
-		toSerialize["ethertype"] = o.Ethertype
+	if val, ok := getSecurityGroupRuleGetEthertypeAttributeTypeOk(o.Ethertype); ok {
+		toSerialize["Ethertype"] = val
 	}
-	if !IsNil(o.IcmpParameters) {
-		toSerialize["icmpParameters"] = o.IcmpParameters
+	if val, ok := getSecurityGroupRuleGetIcmpParametersAttributeTypeOk(o.IcmpParameters); ok {
+		toSerialize["IcmpParameters"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getSecurityGroupRuleGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.IpRange) {
-		toSerialize["ipRange"] = o.IpRange
+	if val, ok := getSecurityGroupRuleGetIpRangeAttributeTypeOk(o.IpRange); ok {
+		toSerialize["IpRange"] = val
 	}
-	if !IsNil(o.PortRange) {
-		toSerialize["portRange"] = o.PortRange
+	if val, ok := getSecurityGroupRuleGetPortRangeAttributeTypeOk(o.PortRange); ok {
+		toSerialize["PortRange"] = val
 	}
-	if !IsNil(o.RemoteSecurityGroupId) {
-		toSerialize["remoteSecurityGroupId"] = o.RemoteSecurityGroupId
+	if val, ok := getSecurityGroupRuleGetRemoteSecurityGroupIdAttributeTypeOk(o.RemoteSecurityGroupId); ok {
+		toSerialize["RemoteSecurityGroupId"] = val
 	}
-	if !IsNil(o.SecurityGroupId) {
-		toSerialize["securityGroupId"] = o.SecurityGroupId
+	if val, ok := getSecurityGroupRuleGetSecurityGroupIdAttributeTypeOk(o.SecurityGroupId); ok {
+		toSerialize["SecurityGroupId"] = val
 	}
-	if !IsNil(o.Protocol) {
-		toSerialize["protocol"] = o.Protocol
+	if val, ok := getSecurityGroupRuleGetProtocolAttributeTypeOk(o.Protocol); ok {
+		toSerialize["Protocol"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_security_group_rule_list_response.go b/services/iaas/model_security_group_rule_list_response.go
index 40157f3be..634ae38b1 100644
--- a/services/iaas/model_security_group_rule_list_response.go
+++ b/services/iaas/model_security_group_rule_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the SecurityGroupRuleListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &SecurityGroupRuleListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type SecurityGroupRuleListResponseGetItemsAttributeType = *[]SecurityGroupRule
+type SecurityGroupRuleListResponseGetItemsArgType = []SecurityGroupRule
+type SecurityGroupRuleListResponseGetItemsRetType = []SecurityGroupRule
+
+func getSecurityGroupRuleListResponseGetItemsAttributeTypeOk(arg SecurityGroupRuleListResponseGetItemsAttributeType) (ret SecurityGroupRuleListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleListResponseGetItemsAttributeType(arg *SecurityGroupRuleListResponseGetItemsAttributeType, val SecurityGroupRuleListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // SecurityGroupRuleListResponse Security group rule list response.
 type SecurityGroupRuleListResponse struct {
 	// A list containing security group rule objects.
 	// REQUIRED
-	Items *[]SecurityGroupRule `json:"items"`
+	Items SecurityGroupRuleListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _SecurityGroupRuleListResponse SecurityGroupRuleListResponse
@@ -30,9 +50,9 @@ type _SecurityGroupRuleListResponse SecurityGroupRuleListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewSecurityGroupRuleListResponse(items *[]SecurityGroupRule) *SecurityGroupRuleListResponse {
+func NewSecurityGroupRuleListResponse(items SecurityGroupRuleListResponseGetItemsArgType) *SecurityGroupRuleListResponse {
 	this := SecurityGroupRuleListResponse{}
-	this.Items = items
+	setSecurityGroupRuleListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewSecurityGroupRuleListResponseWithDefaults() *SecurityGroupRuleListRespon
 }
 
 // GetItems returns the Items field value
-func (o *SecurityGroupRuleListResponse) GetItems() *[]SecurityGroupRule {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]SecurityGroupRule
-		return ret
-	}
-
-	return o.Items
+func (o *SecurityGroupRuleListResponse) GetItems() (ret SecurityGroupRuleListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRuleListResponse) GetItemsOk() (*[]SecurityGroupRule, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *SecurityGroupRuleListResponse) GetItemsOk() (ret SecurityGroupRuleListResponseGetItemsRetType, ok bool) {
+	return getSecurityGroupRuleListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *SecurityGroupRuleListResponse) SetItems(v *[]SecurityGroupRule) {
-	o.Items = v
+func (o *SecurityGroupRuleListResponse) SetItems(v SecurityGroupRuleListResponseGetItemsRetType) {
+	setSecurityGroupRuleListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o SecurityGroupRuleListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getSecurityGroupRuleListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_security_group_rule_protocol.go b/services/iaas/model_security_group_rule_protocol.go
index 2778627df..1f8a0cbd5 100644
--- a/services/iaas/model_security_group_rule_protocol.go
+++ b/services/iaas/model_security_group_rule_protocol.go
@@ -17,9 +17,29 @@ import (
 // checks if the SecurityGroupRuleProtocol type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &SecurityGroupRuleProtocol{}
 
+/*
+	types and functions for protocol
+*/
+
+// isModel
+type SecurityGroupRuleProtocolGetProtocolAttributeType = *Protocol
+type SecurityGroupRuleProtocolGetProtocolArgType = Protocol
+type SecurityGroupRuleProtocolGetProtocolRetType = Protocol
+
+func getSecurityGroupRuleProtocolGetProtocolAttributeTypeOk(arg SecurityGroupRuleProtocolGetProtocolAttributeType) (ret SecurityGroupRuleProtocolGetProtocolRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSecurityGroupRuleProtocolGetProtocolAttributeType(arg *SecurityGroupRuleProtocolGetProtocolAttributeType, val SecurityGroupRuleProtocolGetProtocolRetType) {
+	*arg = &val
+}
+
 // SecurityGroupRuleProtocol The internet protocol which the rule matches.
 type SecurityGroupRuleProtocol struct {
-	Protocol *Protocol `json:"protocol,omitempty"`
+	Protocol SecurityGroupRuleProtocolGetProtocolAttributeType `json:"protocol,omitempty"`
 }
 
 // NewSecurityGroupRuleProtocol instantiates a new SecurityGroupRuleProtocol object
@@ -40,41 +60,32 @@ func NewSecurityGroupRuleProtocolWithDefaults() *SecurityGroupRuleProtocol {
 }
 
 // GetProtocol returns the Protocol field value if set, zero value otherwise.
-func (o *SecurityGroupRuleProtocol) GetProtocol() *Protocol {
-	if o == nil || IsNil(o.Protocol) {
-		var ret *Protocol
-		return ret
-	}
-	return o.Protocol
+func (o *SecurityGroupRuleProtocol) GetProtocol() (res SecurityGroupRuleProtocolGetProtocolRetType) {
+	res, _ = o.GetProtocolOk()
+	return
 }
 
 // GetProtocolOk returns a tuple with the Protocol field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SecurityGroupRuleProtocol) GetProtocolOk() (*Protocol, bool) {
-	if o == nil || IsNil(o.Protocol) {
-		return nil, false
-	}
-	return o.Protocol, true
+func (o *SecurityGroupRuleProtocol) GetProtocolOk() (ret SecurityGroupRuleProtocolGetProtocolRetType, ok bool) {
+	return getSecurityGroupRuleProtocolGetProtocolAttributeTypeOk(o.Protocol)
 }
 
 // HasProtocol returns a boolean if a field has been set.
 func (o *SecurityGroupRuleProtocol) HasProtocol() bool {
-	if o != nil && !IsNil(o.Protocol) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProtocolOk()
+	return ok
 }
 
 // SetProtocol gets a reference to the given Protocol and assigns it to the Protocol field.
-func (o *SecurityGroupRuleProtocol) SetProtocol(v *Protocol) {
-	o.Protocol = v
+func (o *SecurityGroupRuleProtocol) SetProtocol(v SecurityGroupRuleProtocolGetProtocolRetType) {
+	setSecurityGroupRuleProtocolGetProtocolAttributeType(&o.Protocol, v)
 }
 
 func (o SecurityGroupRuleProtocol) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Protocol) {
-		toSerialize["protocol"] = o.Protocol
+	if val, ok := getSecurityGroupRuleProtocolGetProtocolAttributeTypeOk(o.Protocol); ok {
+		toSerialize["Protocol"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_server.go b/services/iaas/model_server.go
index a8ea807d9..7b812a4b6 100644
--- a/services/iaas/model_server.go
+++ b/services/iaas/model_server.go
@@ -18,51 +18,501 @@ import (
 // checks if the Server type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Server{}
 
+/*
+	types and functions for affinityGroup
+*/
+
+// isNotNullableString
+type ServerGetAffinityGroupAttributeType = *string
+
+func getServerGetAffinityGroupAttributeTypeOk(arg ServerGetAffinityGroupAttributeType) (ret ServerGetAffinityGroupRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetAffinityGroupAttributeType(arg *ServerGetAffinityGroupAttributeType, val ServerGetAffinityGroupRetType) {
+	*arg = &val
+}
+
+type ServerGetAffinityGroupArgType = string
+type ServerGetAffinityGroupRetType = string
+
+/*
+	types and functions for availabilityZone
+*/
+
+// isNotNullableString
+type ServerGetAvailabilityZoneAttributeType = *string
+
+func getServerGetAvailabilityZoneAttributeTypeOk(arg ServerGetAvailabilityZoneAttributeType) (ret ServerGetAvailabilityZoneRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetAvailabilityZoneAttributeType(arg *ServerGetAvailabilityZoneAttributeType, val ServerGetAvailabilityZoneRetType) {
+	*arg = &val
+}
+
+type ServerGetAvailabilityZoneArgType = string
+type ServerGetAvailabilityZoneRetType = string
+
+/*
+	types and functions for bootVolume
+*/
+
+// isModel
+type ServerGetBootVolumeAttributeType = *CreateServerPayloadBootVolume
+type ServerGetBootVolumeArgType = CreateServerPayloadBootVolume
+type ServerGetBootVolumeRetType = CreateServerPayloadBootVolume
+
+func getServerGetBootVolumeAttributeTypeOk(arg ServerGetBootVolumeAttributeType) (ret ServerGetBootVolumeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetBootVolumeAttributeType(arg *ServerGetBootVolumeAttributeType, val ServerGetBootVolumeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type ServerGetCreatedAtAttributeType = *time.Time
+type ServerGetCreatedAtArgType = time.Time
+type ServerGetCreatedAtRetType = time.Time
+
+func getServerGetCreatedAtAttributeTypeOk(arg ServerGetCreatedAtAttributeType) (ret ServerGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetCreatedAtAttributeType(arg *ServerGetCreatedAtAttributeType, val ServerGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for errorMessage
+*/
+
+// isNotNullableString
+type ServerGetErrorMessageAttributeType = *string
+
+func getServerGetErrorMessageAttributeTypeOk(arg ServerGetErrorMessageAttributeType) (ret ServerGetErrorMessageRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetErrorMessageAttributeType(arg *ServerGetErrorMessageAttributeType, val ServerGetErrorMessageRetType) {
+	*arg = &val
+}
+
+type ServerGetErrorMessageArgType = string
+type ServerGetErrorMessageRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type ServerGetIdAttributeType = *string
+
+func getServerGetIdAttributeTypeOk(arg ServerGetIdAttributeType) (ret ServerGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetIdAttributeType(arg *ServerGetIdAttributeType, val ServerGetIdRetType) {
+	*arg = &val
+}
+
+type ServerGetIdArgType = string
+type ServerGetIdRetType = string
+
+/*
+	types and functions for imageId
+*/
+
+// isNotNullableString
+type ServerGetImageIdAttributeType = *string
+
+func getServerGetImageIdAttributeTypeOk(arg ServerGetImageIdAttributeType) (ret ServerGetImageIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetImageIdAttributeType(arg *ServerGetImageIdAttributeType, val ServerGetImageIdRetType) {
+	*arg = &val
+}
+
+type ServerGetImageIdArgType = string
+type ServerGetImageIdRetType = string
+
+/*
+	types and functions for keypairName
+*/
+
+// isNotNullableString
+type ServerGetKeypairNameAttributeType = *string
+
+func getServerGetKeypairNameAttributeTypeOk(arg ServerGetKeypairNameAttributeType) (ret ServerGetKeypairNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetKeypairNameAttributeType(arg *ServerGetKeypairNameAttributeType, val ServerGetKeypairNameRetType) {
+	*arg = &val
+}
+
+type ServerGetKeypairNameArgType = string
+type ServerGetKeypairNameRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type ServerGetLabelsAttributeType = *map[string]interface{}
+type ServerGetLabelsArgType = map[string]interface{}
+type ServerGetLabelsRetType = map[string]interface{}
+
+func getServerGetLabelsAttributeTypeOk(arg ServerGetLabelsAttributeType) (ret ServerGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetLabelsAttributeType(arg *ServerGetLabelsAttributeType, val ServerGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for launchedAt
+*/
+
+// isDateTime
+type ServerGetLaunchedAtAttributeType = *time.Time
+type ServerGetLaunchedAtArgType = time.Time
+type ServerGetLaunchedAtRetType = time.Time
+
+func getServerGetLaunchedAtAttributeTypeOk(arg ServerGetLaunchedAtAttributeType) (ret ServerGetLaunchedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetLaunchedAtAttributeType(arg *ServerGetLaunchedAtAttributeType, val ServerGetLaunchedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for machineType
+*/
+
+// isNotNullableString
+type ServerGetMachineTypeAttributeType = *string
+
+func getServerGetMachineTypeAttributeTypeOk(arg ServerGetMachineTypeAttributeType) (ret ServerGetMachineTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetMachineTypeAttributeType(arg *ServerGetMachineTypeAttributeType, val ServerGetMachineTypeRetType) {
+	*arg = &val
+}
+
+type ServerGetMachineTypeArgType = string
+type ServerGetMachineTypeRetType = string
+
+/*
+	types and functions for maintenanceWindow
+*/
+
+// isModel
+type ServerGetMaintenanceWindowAttributeType = *ServerMaintenance
+type ServerGetMaintenanceWindowArgType = ServerMaintenance
+type ServerGetMaintenanceWindowRetType = ServerMaintenance
+
+func getServerGetMaintenanceWindowAttributeTypeOk(arg ServerGetMaintenanceWindowAttributeType) (ret ServerGetMaintenanceWindowRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetMaintenanceWindowAttributeType(arg *ServerGetMaintenanceWindowAttributeType, val ServerGetMaintenanceWindowRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type ServerGetNameAttributeType = *string
+
+func getServerGetNameAttributeTypeOk(arg ServerGetNameAttributeType) (ret ServerGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetNameAttributeType(arg *ServerGetNameAttributeType, val ServerGetNameRetType) {
+	*arg = &val
+}
+
+type ServerGetNameArgType = string
+type ServerGetNameRetType = string
+
+/*
+	types and functions for networking
+*/
+
+// isModel
+type ServerGetNetworkingAttributeType = *CreateServerPayloadNetworking
+type ServerGetNetworkingArgType = CreateServerPayloadNetworking
+type ServerGetNetworkingRetType = CreateServerPayloadNetworking
+
+func getServerGetNetworkingAttributeTypeOk(arg ServerGetNetworkingAttributeType) (ret ServerGetNetworkingRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetNetworkingAttributeType(arg *ServerGetNetworkingAttributeType, val ServerGetNetworkingRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for nics
+*/
+
+// isArray
+type ServerGetNicsAttributeType = *[]ServerNetwork
+type ServerGetNicsArgType = []ServerNetwork
+type ServerGetNicsRetType = []ServerNetwork
+
+func getServerGetNicsAttributeTypeOk(arg ServerGetNicsAttributeType) (ret ServerGetNicsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetNicsAttributeType(arg *ServerGetNicsAttributeType, val ServerGetNicsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for powerStatus
+*/
+
+// isNotNullableString
+type ServerGetPowerStatusAttributeType = *string
+
+func getServerGetPowerStatusAttributeTypeOk(arg ServerGetPowerStatusAttributeType) (ret ServerGetPowerStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetPowerStatusAttributeType(arg *ServerGetPowerStatusAttributeType, val ServerGetPowerStatusRetType) {
+	*arg = &val
+}
+
+type ServerGetPowerStatusArgType = string
+type ServerGetPowerStatusRetType = string
+
+/*
+	types and functions for securityGroups
+*/
+
+// isArray
+type ServerGetSecurityGroupsAttributeType = *[]string
+type ServerGetSecurityGroupsArgType = []string
+type ServerGetSecurityGroupsRetType = []string
+
+func getServerGetSecurityGroupsAttributeTypeOk(arg ServerGetSecurityGroupsAttributeType) (ret ServerGetSecurityGroupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetSecurityGroupsAttributeType(arg *ServerGetSecurityGroupsAttributeType, val ServerGetSecurityGroupsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for serviceAccountMails
+*/
+
+// isArray
+type ServerGetServiceAccountMailsAttributeType = *[]string
+type ServerGetServiceAccountMailsArgType = []string
+type ServerGetServiceAccountMailsRetType = []string
+
+func getServerGetServiceAccountMailsAttributeTypeOk(arg ServerGetServiceAccountMailsAttributeType) (ret ServerGetServiceAccountMailsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetServiceAccountMailsAttributeType(arg *ServerGetServiceAccountMailsAttributeType, val ServerGetServiceAccountMailsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type ServerGetStatusAttributeType = *string
+
+func getServerGetStatusAttributeTypeOk(arg ServerGetStatusAttributeType) (ret ServerGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetStatusAttributeType(arg *ServerGetStatusAttributeType, val ServerGetStatusRetType) {
+	*arg = &val
+}
+
+type ServerGetStatusArgType = string
+type ServerGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type ServerGetUpdatedAtAttributeType = *time.Time
+type ServerGetUpdatedAtArgType = time.Time
+type ServerGetUpdatedAtRetType = time.Time
+
+func getServerGetUpdatedAtAttributeTypeOk(arg ServerGetUpdatedAtAttributeType) (ret ServerGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetUpdatedAtAttributeType(arg *ServerGetUpdatedAtAttributeType, val ServerGetUpdatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for userData
+*/
+
+// isByteArray
+type ServerGetUserDataAttributeType = *[]byte
+type ServerGetUserDataArgType = []byte
+type ServerGetUserDataRetType = []byte
+
+func getServerGetUserDataAttributeTypeOk(arg ServerGetUserDataAttributeType) (ret ServerGetUserDataRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetUserDataAttributeType(arg *ServerGetUserDataAttributeType, val ServerGetUserDataRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for volumes
+*/
+
+// isArray
+type ServerGetVolumesAttributeType = *[]string
+type ServerGetVolumesArgType = []string
+type ServerGetVolumesRetType = []string
+
+func getServerGetVolumesAttributeTypeOk(arg ServerGetVolumesAttributeType) (ret ServerGetVolumesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerGetVolumesAttributeType(arg *ServerGetVolumesAttributeType, val ServerGetVolumesRetType) {
+	*arg = &val
+}
+
 // Server Representation of a single server object.
 type Server struct {
 	// Universally Unique Identifier (UUID).
-	AffinityGroup *string `json:"affinityGroup,omitempty"`
+	AffinityGroup ServerGetAffinityGroupAttributeType `json:"affinityGroup,omitempty"`
 	// Object that represents an availability zone.
-	AvailabilityZone *string                        `json:"availabilityZone,omitempty"`
-	BootVolume       *CreateServerPayloadBootVolume `json:"bootVolume,omitempty"`
+	AvailabilityZone ServerGetAvailabilityZoneAttributeType `json:"availabilityZone,omitempty"`
+	BootVolume       ServerGetBootVolumeAttributeType       `json:"bootVolume,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt ServerGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// An error message.
-	ErrorMessage *string `json:"errorMessage,omitempty"`
+	ErrorMessage ServerGetErrorMessageAttributeType `json:"errorMessage,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id ServerGetIdAttributeType `json:"id,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ImageId *string `json:"imageId,omitempty"`
+	ImageId ServerGetImageIdAttributeType `json:"imageId,omitempty"`
 	// The name of an SSH keypair. Allowed characters are letters [a-zA-Z], digits [0-9] and the following special characters: [@._-].
-	KeypairName *string `json:"keypairName,omitempty"`
+	KeypairName ServerGetKeypairNameAttributeType `json:"keypairName,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels ServerGetLabelsAttributeType `json:"labels,omitempty"`
 	// Date-time when resource was launched.
-	LaunchedAt *time.Time `json:"launchedAt,omitempty"`
+	LaunchedAt ServerGetLaunchedAtAttributeType `json:"launchedAt,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	MachineType       *string            `json:"machineType"`
-	MaintenanceWindow *ServerMaintenance `json:"maintenanceWindow,omitempty"`
+	MachineType       ServerGetMachineTypeAttributeType       `json:"machineType"`
+	MaintenanceWindow ServerGetMaintenanceWindowAttributeType `json:"maintenanceWindow,omitempty"`
 	// The name for a Server.
 	// REQUIRED
-	Name       *string                        `json:"name"`
-	Networking *CreateServerPayloadNetworking `json:"networking,omitempty"`
+	Name       ServerGetNameAttributeType       `json:"name"`
+	Networking ServerGetNetworkingAttributeType `json:"networking,omitempty"`
 	// A list of networks attached to a server.
-	Nics *[]ServerNetwork `json:"nics,omitempty"`
+	Nics ServerGetNicsAttributeType `json:"nics,omitempty"`
 	// The power status of a server. Possible values: `CRASHED`, `ERROR`, `RUNNING`, `STOPPED`.
-	PowerStatus *string `json:"powerStatus,omitempty"`
+	PowerStatus ServerGetPowerStatusAttributeType `json:"powerStatus,omitempty"`
 	// A list of General Objects.
-	SecurityGroups *[]string `json:"securityGroups,omitempty"`
+	SecurityGroups ServerGetSecurityGroupsAttributeType `json:"securityGroups,omitempty"`
 	// A list of service account mails.
-	ServiceAccountMails *[]string `json:"serviceAccountMails,omitempty"`
+	ServiceAccountMails ServerGetServiceAccountMailsAttributeType `json:"serviceAccountMails,omitempty"`
 	// The status of a server object. Possible values: `ACTIVE`, `BACKING-UP`, `CREATING`, `DEALLOCATED`, `DEALLOCATING`, `DELETED`, `DELETING`, `ERROR`, `INACTIVE`, `MIGRATING`, `REBOOT`, `REBOOTING`, `REBUILD`, `REBUILDING`, `RESCUE`, `RESCUING`, `RESIZING`, `RESTORING`, `SNAPSHOTTING`, `STARTING`, `STOPPING`, `UNRESCUING`, `UPDATING`.
-	Status *string `json:"status,omitempty"`
+	Status ServerGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt ServerGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 	// User Data that is provided to the server. Must be base64 encoded and is passed via cloud-init to the server.
-	UserData *string `json:"userData,omitempty"`
+	UserData ServerGetUserDataAttributeType `json:"userData,omitempty"`
 	// A list of UUIDs.
-	Volumes *[]string `json:"volumes,omitempty"`
+	Volumes ServerGetVolumesAttributeType `json:"volumes,omitempty"`
 }
 
 type _Server Server
@@ -71,10 +521,10 @@ type _Server Server
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewServer(machineType *string, name *string) *Server {
+func NewServer(machineType ServerGetMachineTypeArgType, name ServerGetNameArgType) *Server {
 	this := Server{}
-	this.MachineType = machineType
-	this.Name = name
+	setServerGetMachineTypeAttributeType(&this.MachineType, machineType)
+	setServerGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -87,756 +537,566 @@ func NewServerWithDefaults() *Server {
 }
 
 // GetAffinityGroup returns the AffinityGroup field value if set, zero value otherwise.
-func (o *Server) GetAffinityGroup() *string {
-	if o == nil || IsNil(o.AffinityGroup) {
-		var ret *string
-		return ret
-	}
-	return o.AffinityGroup
+func (o *Server) GetAffinityGroup() (res ServerGetAffinityGroupRetType) {
+	res, _ = o.GetAffinityGroupOk()
+	return
 }
 
 // GetAffinityGroupOk returns a tuple with the AffinityGroup field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetAffinityGroupOk() (*string, bool) {
-	if o == nil || IsNil(o.AffinityGroup) {
-		return nil, false
-	}
-	return o.AffinityGroup, true
+func (o *Server) GetAffinityGroupOk() (ret ServerGetAffinityGroupRetType, ok bool) {
+	return getServerGetAffinityGroupAttributeTypeOk(o.AffinityGroup)
 }
 
 // HasAffinityGroup returns a boolean if a field has been set.
 func (o *Server) HasAffinityGroup() bool {
-	if o != nil && !IsNil(o.AffinityGroup) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAffinityGroupOk()
+	return ok
 }
 
 // SetAffinityGroup gets a reference to the given string and assigns it to the AffinityGroup field.
-func (o *Server) SetAffinityGroup(v *string) {
-	o.AffinityGroup = v
+func (o *Server) SetAffinityGroup(v ServerGetAffinityGroupRetType) {
+	setServerGetAffinityGroupAttributeType(&o.AffinityGroup, v)
 }
 
 // GetAvailabilityZone returns the AvailabilityZone field value if set, zero value otherwise.
-func (o *Server) GetAvailabilityZone() *string {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		var ret *string
-		return ret
-	}
-	return o.AvailabilityZone
+func (o *Server) GetAvailabilityZone() (res ServerGetAvailabilityZoneRetType) {
+	res, _ = o.GetAvailabilityZoneOk()
+	return
 }
 
 // GetAvailabilityZoneOk returns a tuple with the AvailabilityZone field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetAvailabilityZoneOk() (*string, bool) {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		return nil, false
-	}
-	return o.AvailabilityZone, true
+func (o *Server) GetAvailabilityZoneOk() (ret ServerGetAvailabilityZoneRetType, ok bool) {
+	return getServerGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone)
 }
 
 // HasAvailabilityZone returns a boolean if a field has been set.
 func (o *Server) HasAvailabilityZone() bool {
-	if o != nil && !IsNil(o.AvailabilityZone) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAvailabilityZoneOk()
+	return ok
 }
 
 // SetAvailabilityZone gets a reference to the given string and assigns it to the AvailabilityZone field.
-func (o *Server) SetAvailabilityZone(v *string) {
-	o.AvailabilityZone = v
+func (o *Server) SetAvailabilityZone(v ServerGetAvailabilityZoneRetType) {
+	setServerGetAvailabilityZoneAttributeType(&o.AvailabilityZone, v)
 }
 
 // GetBootVolume returns the BootVolume field value if set, zero value otherwise.
-func (o *Server) GetBootVolume() *CreateServerPayloadBootVolume {
-	if o == nil || IsNil(o.BootVolume) {
-		var ret *CreateServerPayloadBootVolume
-		return ret
-	}
-	return o.BootVolume
+func (o *Server) GetBootVolume() (res ServerGetBootVolumeRetType) {
+	res, _ = o.GetBootVolumeOk()
+	return
 }
 
 // GetBootVolumeOk returns a tuple with the BootVolume field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetBootVolumeOk() (*CreateServerPayloadBootVolume, bool) {
-	if o == nil || IsNil(o.BootVolume) {
-		return nil, false
-	}
-	return o.BootVolume, true
+func (o *Server) GetBootVolumeOk() (ret ServerGetBootVolumeRetType, ok bool) {
+	return getServerGetBootVolumeAttributeTypeOk(o.BootVolume)
 }
 
 // HasBootVolume returns a boolean if a field has been set.
 func (o *Server) HasBootVolume() bool {
-	if o != nil && !IsNil(o.BootVolume) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetBootVolumeOk()
+	return ok
 }
 
 // SetBootVolume gets a reference to the given CreateServerPayloadBootVolume and assigns it to the BootVolume field.
-func (o *Server) SetBootVolume(v *CreateServerPayloadBootVolume) {
-	o.BootVolume = v
+func (o *Server) SetBootVolume(v ServerGetBootVolumeRetType) {
+	setServerGetBootVolumeAttributeType(&o.BootVolume, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Server) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Server) GetCreatedAt() (res ServerGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Server) GetCreatedAtOk() (ret ServerGetCreatedAtRetType, ok bool) {
+	return getServerGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Server) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Server) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Server) SetCreatedAt(v ServerGetCreatedAtRetType) {
+	setServerGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetErrorMessage returns the ErrorMessage field value if set, zero value otherwise.
-func (o *Server) GetErrorMessage() *string {
-	if o == nil || IsNil(o.ErrorMessage) {
-		var ret *string
-		return ret
-	}
-	return o.ErrorMessage
+func (o *Server) GetErrorMessage() (res ServerGetErrorMessageRetType) {
+	res, _ = o.GetErrorMessageOk()
+	return
 }
 
 // GetErrorMessageOk returns a tuple with the ErrorMessage field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetErrorMessageOk() (*string, bool) {
-	if o == nil || IsNil(o.ErrorMessage) {
-		return nil, false
-	}
-	return o.ErrorMessage, true
+func (o *Server) GetErrorMessageOk() (ret ServerGetErrorMessageRetType, ok bool) {
+	return getServerGetErrorMessageAttributeTypeOk(o.ErrorMessage)
 }
 
 // HasErrorMessage returns a boolean if a field has been set.
 func (o *Server) HasErrorMessage() bool {
-	if o != nil && !IsNil(o.ErrorMessage) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetErrorMessageOk()
+	return ok
 }
 
 // SetErrorMessage gets a reference to the given string and assigns it to the ErrorMessage field.
-func (o *Server) SetErrorMessage(v *string) {
-	o.ErrorMessage = v
+func (o *Server) SetErrorMessage(v ServerGetErrorMessageRetType) {
+	setServerGetErrorMessageAttributeType(&o.ErrorMessage, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *Server) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *Server) GetId() (res ServerGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *Server) GetIdOk() (ret ServerGetIdRetType, ok bool) {
+	return getServerGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *Server) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *Server) SetId(v *string) {
-	o.Id = v
+func (o *Server) SetId(v ServerGetIdRetType) {
+	setServerGetIdAttributeType(&o.Id, v)
 }
 
 // GetImageId returns the ImageId field value if set, zero value otherwise.
-func (o *Server) GetImageId() *string {
-	if o == nil || IsNil(o.ImageId) {
-		var ret *string
-		return ret
-	}
-	return o.ImageId
+func (o *Server) GetImageId() (res ServerGetImageIdRetType) {
+	res, _ = o.GetImageIdOk()
+	return
 }
 
 // GetImageIdOk returns a tuple with the ImageId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetImageIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ImageId) {
-		return nil, false
-	}
-	return o.ImageId, true
+func (o *Server) GetImageIdOk() (ret ServerGetImageIdRetType, ok bool) {
+	return getServerGetImageIdAttributeTypeOk(o.ImageId)
 }
 
 // HasImageId returns a boolean if a field has been set.
 func (o *Server) HasImageId() bool {
-	if o != nil && !IsNil(o.ImageId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetImageIdOk()
+	return ok
 }
 
 // SetImageId gets a reference to the given string and assigns it to the ImageId field.
-func (o *Server) SetImageId(v *string) {
-	o.ImageId = v
+func (o *Server) SetImageId(v ServerGetImageIdRetType) {
+	setServerGetImageIdAttributeType(&o.ImageId, v)
 }
 
 // GetKeypairName returns the KeypairName field value if set, zero value otherwise.
-func (o *Server) GetKeypairName() *string {
-	if o == nil || IsNil(o.KeypairName) {
-		var ret *string
-		return ret
-	}
-	return o.KeypairName
+func (o *Server) GetKeypairName() (res ServerGetKeypairNameRetType) {
+	res, _ = o.GetKeypairNameOk()
+	return
 }
 
 // GetKeypairNameOk returns a tuple with the KeypairName field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetKeypairNameOk() (*string, bool) {
-	if o == nil || IsNil(o.KeypairName) {
-		return nil, false
-	}
-	return o.KeypairName, true
+func (o *Server) GetKeypairNameOk() (ret ServerGetKeypairNameRetType, ok bool) {
+	return getServerGetKeypairNameAttributeTypeOk(o.KeypairName)
 }
 
 // HasKeypairName returns a boolean if a field has been set.
 func (o *Server) HasKeypairName() bool {
-	if o != nil && !IsNil(o.KeypairName) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetKeypairNameOk()
+	return ok
 }
 
 // SetKeypairName gets a reference to the given string and assigns it to the KeypairName field.
-func (o *Server) SetKeypairName(v *string) {
-	o.KeypairName = v
+func (o *Server) SetKeypairName(v ServerGetKeypairNameRetType) {
+	setServerGetKeypairNameAttributeType(&o.KeypairName, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Server) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Server) GetLabels() (res ServerGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Server) GetLabelsOk() (ret ServerGetLabelsRetType, ok bool) {
+	return getServerGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Server) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Server) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Server) SetLabels(v ServerGetLabelsRetType) {
+	setServerGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetLaunchedAt returns the LaunchedAt field value if set, zero value otherwise.
-func (o *Server) GetLaunchedAt() *time.Time {
-	if o == nil || IsNil(o.LaunchedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.LaunchedAt
+func (o *Server) GetLaunchedAt() (res ServerGetLaunchedAtRetType) {
+	res, _ = o.GetLaunchedAtOk()
+	return
 }
 
 // GetLaunchedAtOk returns a tuple with the LaunchedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetLaunchedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.LaunchedAt) {
-		return nil, false
-	}
-	return o.LaunchedAt, true
+func (o *Server) GetLaunchedAtOk() (ret ServerGetLaunchedAtRetType, ok bool) {
+	return getServerGetLaunchedAtAttributeTypeOk(o.LaunchedAt)
 }
 
 // HasLaunchedAt returns a boolean if a field has been set.
 func (o *Server) HasLaunchedAt() bool {
-	if o != nil && !IsNil(o.LaunchedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLaunchedAtOk()
+	return ok
 }
 
 // SetLaunchedAt gets a reference to the given time.Time and assigns it to the LaunchedAt field.
-func (o *Server) SetLaunchedAt(v *time.Time) {
-	o.LaunchedAt = v
+func (o *Server) SetLaunchedAt(v ServerGetLaunchedAtRetType) {
+	setServerGetLaunchedAtAttributeType(&o.LaunchedAt, v)
 }
 
 // GetMachineType returns the MachineType field value
-func (o *Server) GetMachineType() *string {
-	if o == nil || IsNil(o.MachineType) {
-		var ret *string
-		return ret
-	}
-
-	return o.MachineType
+func (o *Server) GetMachineType() (ret ServerGetMachineTypeRetType) {
+	ret, _ = o.GetMachineTypeOk()
+	return ret
 }
 
 // GetMachineTypeOk returns a tuple with the MachineType field value
 // and a boolean to check if the value has been set.
-func (o *Server) GetMachineTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.MachineType, true
+func (o *Server) GetMachineTypeOk() (ret ServerGetMachineTypeRetType, ok bool) {
+	return getServerGetMachineTypeAttributeTypeOk(o.MachineType)
 }
 
 // SetMachineType sets field value
-func (o *Server) SetMachineType(v *string) {
-	o.MachineType = v
+func (o *Server) SetMachineType(v ServerGetMachineTypeRetType) {
+	setServerGetMachineTypeAttributeType(&o.MachineType, v)
 }
 
 // GetMaintenanceWindow returns the MaintenanceWindow field value if set, zero value otherwise.
-func (o *Server) GetMaintenanceWindow() *ServerMaintenance {
-	if o == nil || IsNil(o.MaintenanceWindow) {
-		var ret *ServerMaintenance
-		return ret
-	}
-	return o.MaintenanceWindow
+func (o *Server) GetMaintenanceWindow() (res ServerGetMaintenanceWindowRetType) {
+	res, _ = o.GetMaintenanceWindowOk()
+	return
 }
 
 // GetMaintenanceWindowOk returns a tuple with the MaintenanceWindow field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetMaintenanceWindowOk() (*ServerMaintenance, bool) {
-	if o == nil || IsNil(o.MaintenanceWindow) {
-		return nil, false
-	}
-	return o.MaintenanceWindow, true
+func (o *Server) GetMaintenanceWindowOk() (ret ServerGetMaintenanceWindowRetType, ok bool) {
+	return getServerGetMaintenanceWindowAttributeTypeOk(o.MaintenanceWindow)
 }
 
 // HasMaintenanceWindow returns a boolean if a field has been set.
 func (o *Server) HasMaintenanceWindow() bool {
-	if o != nil && !IsNil(o.MaintenanceWindow) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMaintenanceWindowOk()
+	return ok
 }
 
 // SetMaintenanceWindow gets a reference to the given ServerMaintenance and assigns it to the MaintenanceWindow field.
-func (o *Server) SetMaintenanceWindow(v *ServerMaintenance) {
-	o.MaintenanceWindow = v
+func (o *Server) SetMaintenanceWindow(v ServerGetMaintenanceWindowRetType) {
+	setServerGetMaintenanceWindowAttributeType(&o.MaintenanceWindow, v)
 }
 
 // GetName returns the Name field value
-func (o *Server) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *Server) GetName() (ret ServerGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *Server) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Server) GetNameOk() (ret ServerGetNameRetType, ok bool) {
+	return getServerGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *Server) SetName(v *string) {
-	o.Name = v
+func (o *Server) SetName(v ServerGetNameRetType) {
+	setServerGetNameAttributeType(&o.Name, v)
 }
 
 // GetNetworking returns the Networking field value if set, zero value otherwise.
-func (o *Server) GetNetworking() *CreateServerPayloadNetworking {
-	if o == nil || IsNil(o.Networking) {
-		var ret *CreateServerPayloadNetworking
-		return ret
-	}
-	return o.Networking
+func (o *Server) GetNetworking() (res ServerGetNetworkingRetType) {
+	res, _ = o.GetNetworkingOk()
+	return
 }
 
 // GetNetworkingOk returns a tuple with the Networking field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetNetworkingOk() (*CreateServerPayloadNetworking, bool) {
-	if o == nil || IsNil(o.Networking) {
-		return nil, false
-	}
-	return o.Networking, true
+func (o *Server) GetNetworkingOk() (ret ServerGetNetworkingRetType, ok bool) {
+	return getServerGetNetworkingAttributeTypeOk(o.Networking)
 }
 
 // HasNetworking returns a boolean if a field has been set.
 func (o *Server) HasNetworking() bool {
-	if o != nil && !IsNil(o.Networking) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkingOk()
+	return ok
 }
 
 // SetNetworking gets a reference to the given CreateServerPayloadNetworking and assigns it to the Networking field.
-func (o *Server) SetNetworking(v *CreateServerPayloadNetworking) {
-	o.Networking = v
+func (o *Server) SetNetworking(v ServerGetNetworkingRetType) {
+	setServerGetNetworkingAttributeType(&o.Networking, v)
 }
 
 // GetNics returns the Nics field value if set, zero value otherwise.
-func (o *Server) GetNics() *[]ServerNetwork {
-	if o == nil || IsNil(o.Nics) {
-		var ret *[]ServerNetwork
-		return ret
-	}
-	return o.Nics
+func (o *Server) GetNics() (res ServerGetNicsRetType) {
+	res, _ = o.GetNicsOk()
+	return
 }
 
 // GetNicsOk returns a tuple with the Nics field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetNicsOk() (*[]ServerNetwork, bool) {
-	if o == nil || IsNil(o.Nics) {
-		return nil, false
-	}
-	return o.Nics, true
+func (o *Server) GetNicsOk() (ret ServerGetNicsRetType, ok bool) {
+	return getServerGetNicsAttributeTypeOk(o.Nics)
 }
 
 // HasNics returns a boolean if a field has been set.
 func (o *Server) HasNics() bool {
-	if o != nil && !IsNil(o.Nics) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNicsOk()
+	return ok
 }
 
 // SetNics gets a reference to the given []ServerNetwork and assigns it to the Nics field.
-func (o *Server) SetNics(v *[]ServerNetwork) {
-	o.Nics = v
+func (o *Server) SetNics(v ServerGetNicsRetType) {
+	setServerGetNicsAttributeType(&o.Nics, v)
 }
 
 // GetPowerStatus returns the PowerStatus field value if set, zero value otherwise.
-func (o *Server) GetPowerStatus() *string {
-	if o == nil || IsNil(o.PowerStatus) {
-		var ret *string
-		return ret
-	}
-	return o.PowerStatus
+func (o *Server) GetPowerStatus() (res ServerGetPowerStatusRetType) {
+	res, _ = o.GetPowerStatusOk()
+	return
 }
 
 // GetPowerStatusOk returns a tuple with the PowerStatus field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetPowerStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.PowerStatus) {
-		return nil, false
-	}
-	return o.PowerStatus, true
+func (o *Server) GetPowerStatusOk() (ret ServerGetPowerStatusRetType, ok bool) {
+	return getServerGetPowerStatusAttributeTypeOk(o.PowerStatus)
 }
 
 // HasPowerStatus returns a boolean if a field has been set.
 func (o *Server) HasPowerStatus() bool {
-	if o != nil && !IsNil(o.PowerStatus) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPowerStatusOk()
+	return ok
 }
 
 // SetPowerStatus gets a reference to the given string and assigns it to the PowerStatus field.
-func (o *Server) SetPowerStatus(v *string) {
-	o.PowerStatus = v
+func (o *Server) SetPowerStatus(v ServerGetPowerStatusRetType) {
+	setServerGetPowerStatusAttributeType(&o.PowerStatus, v)
 }
 
 // GetSecurityGroups returns the SecurityGroups field value if set, zero value otherwise.
-func (o *Server) GetSecurityGroups() *[]string {
-	if o == nil || IsNil(o.SecurityGroups) {
-		var ret *[]string
-		return ret
-	}
-	return o.SecurityGroups
+func (o *Server) GetSecurityGroups() (res ServerGetSecurityGroupsRetType) {
+	res, _ = o.GetSecurityGroupsOk()
+	return
 }
 
 // GetSecurityGroupsOk returns a tuple with the SecurityGroups field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetSecurityGroupsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.SecurityGroups) {
-		return nil, false
-	}
-	return o.SecurityGroups, true
+func (o *Server) GetSecurityGroupsOk() (ret ServerGetSecurityGroupsRetType, ok bool) {
+	return getServerGetSecurityGroupsAttributeTypeOk(o.SecurityGroups)
 }
 
 // HasSecurityGroups returns a boolean if a field has been set.
 func (o *Server) HasSecurityGroups() bool {
-	if o != nil && !IsNil(o.SecurityGroups) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupsOk()
+	return ok
 }
 
 // SetSecurityGroups gets a reference to the given []string and assigns it to the SecurityGroups field.
-func (o *Server) SetSecurityGroups(v *[]string) {
-	o.SecurityGroups = v
+func (o *Server) SetSecurityGroups(v ServerGetSecurityGroupsRetType) {
+	setServerGetSecurityGroupsAttributeType(&o.SecurityGroups, v)
 }
 
 // GetServiceAccountMails returns the ServiceAccountMails field value if set, zero value otherwise.
-func (o *Server) GetServiceAccountMails() *[]string {
-	if o == nil || IsNil(o.ServiceAccountMails) {
-		var ret *[]string
-		return ret
-	}
-	return o.ServiceAccountMails
+func (o *Server) GetServiceAccountMails() (res ServerGetServiceAccountMailsRetType) {
+	res, _ = o.GetServiceAccountMailsOk()
+	return
 }
 
 // GetServiceAccountMailsOk returns a tuple with the ServiceAccountMails field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetServiceAccountMailsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.ServiceAccountMails) {
-		return nil, false
-	}
-	return o.ServiceAccountMails, true
+func (o *Server) GetServiceAccountMailsOk() (ret ServerGetServiceAccountMailsRetType, ok bool) {
+	return getServerGetServiceAccountMailsAttributeTypeOk(o.ServiceAccountMails)
 }
 
 // HasServiceAccountMails returns a boolean if a field has been set.
 func (o *Server) HasServiceAccountMails() bool {
-	if o != nil && !IsNil(o.ServiceAccountMails) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetServiceAccountMailsOk()
+	return ok
 }
 
 // SetServiceAccountMails gets a reference to the given []string and assigns it to the ServiceAccountMails field.
-func (o *Server) SetServiceAccountMails(v *[]string) {
-	o.ServiceAccountMails = v
+func (o *Server) SetServiceAccountMails(v ServerGetServiceAccountMailsRetType) {
+	setServerGetServiceAccountMailsAttributeType(&o.ServiceAccountMails, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *Server) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *Server) GetStatus() (res ServerGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *Server) GetStatusOk() (ret ServerGetStatusRetType, ok bool) {
+	return getServerGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *Server) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *Server) SetStatus(v *string) {
-	o.Status = v
+func (o *Server) SetStatus(v ServerGetStatusRetType) {
+	setServerGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Server) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Server) GetUpdatedAt() (res ServerGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Server) GetUpdatedAtOk() (ret ServerGetUpdatedAtRetType, ok bool) {
+	return getServerGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Server) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Server) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Server) SetUpdatedAt(v ServerGetUpdatedAtRetType) {
+	setServerGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 // GetUserData returns the UserData field value if set, zero value otherwise.
-func (o *Server) GetUserData() *string {
-	if o == nil || IsNil(o.UserData) {
-		var ret *string
-		return ret
-	}
-	return o.UserData
+func (o *Server) GetUserData() (res ServerGetUserDataRetType) {
+	res, _ = o.GetUserDataOk()
+	return
 }
 
 // GetUserDataOk returns a tuple with the UserData field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetUserDataOk() (*string, bool) {
-	if o == nil || IsNil(o.UserData) {
-		return nil, false
-	}
-	return o.UserData, true
+func (o *Server) GetUserDataOk() (ret ServerGetUserDataRetType, ok bool) {
+	return getServerGetUserDataAttributeTypeOk(o.UserData)
 }
 
 // HasUserData returns a boolean if a field has been set.
 func (o *Server) HasUserData() bool {
-	if o != nil && !IsNil(o.UserData) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUserDataOk()
+	return ok
 }
 
 // SetUserData gets a reference to the given string and assigns it to the UserData field.
-func (o *Server) SetUserData(v *string) {
-	o.UserData = v
+func (o *Server) SetUserData(v ServerGetUserDataRetType) {
+	setServerGetUserDataAttributeType(&o.UserData, v)
 }
 
 // GetVolumes returns the Volumes field value if set, zero value otherwise.
-func (o *Server) GetVolumes() *[]string {
-	if o == nil || IsNil(o.Volumes) {
-		var ret *[]string
-		return ret
-	}
-	return o.Volumes
+func (o *Server) GetVolumes() (res ServerGetVolumesRetType) {
+	res, _ = o.GetVolumesOk()
+	return
 }
 
 // GetVolumesOk returns a tuple with the Volumes field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Server) GetVolumesOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Volumes) {
-		return nil, false
-	}
-	return o.Volumes, true
+func (o *Server) GetVolumesOk() (ret ServerGetVolumesRetType, ok bool) {
+	return getServerGetVolumesAttributeTypeOk(o.Volumes)
 }
 
 // HasVolumes returns a boolean if a field has been set.
 func (o *Server) HasVolumes() bool {
-	if o != nil && !IsNil(o.Volumes) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVolumesOk()
+	return ok
 }
 
 // SetVolumes gets a reference to the given []string and assigns it to the Volumes field.
-func (o *Server) SetVolumes(v *[]string) {
-	o.Volumes = v
+func (o *Server) SetVolumes(v ServerGetVolumesRetType) {
+	setServerGetVolumesAttributeType(&o.Volumes, v)
 }
 
 func (o Server) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AffinityGroup) {
-		toSerialize["affinityGroup"] = o.AffinityGroup
+	if val, ok := getServerGetAffinityGroupAttributeTypeOk(o.AffinityGroup); ok {
+		toSerialize["AffinityGroup"] = val
+	}
+	if val, ok := getServerGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone); ok {
+		toSerialize["AvailabilityZone"] = val
+	}
+	if val, ok := getServerGetBootVolumeAttributeTypeOk(o.BootVolume); ok {
+		toSerialize["BootVolume"] = val
 	}
-	if !IsNil(o.AvailabilityZone) {
-		toSerialize["availabilityZone"] = o.AvailabilityZone
+	if val, ok := getServerGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.BootVolume) {
-		toSerialize["bootVolume"] = o.BootVolume
+	if val, ok := getServerGetErrorMessageAttributeTypeOk(o.ErrorMessage); ok {
+		toSerialize["ErrorMessage"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getServerGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.ErrorMessage) {
-		toSerialize["errorMessage"] = o.ErrorMessage
+	if val, ok := getServerGetImageIdAttributeTypeOk(o.ImageId); ok {
+		toSerialize["ImageId"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getServerGetKeypairNameAttributeTypeOk(o.KeypairName); ok {
+		toSerialize["KeypairName"] = val
 	}
-	if !IsNil(o.ImageId) {
-		toSerialize["imageId"] = o.ImageId
+	if val, ok := getServerGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.KeypairName) {
-		toSerialize["keypairName"] = o.KeypairName
+	if val, ok := getServerGetLaunchedAtAttributeTypeOk(o.LaunchedAt); ok {
+		toSerialize["LaunchedAt"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getServerGetMachineTypeAttributeTypeOk(o.MachineType); ok {
+		toSerialize["MachineType"] = val
 	}
-	if !IsNil(o.LaunchedAt) {
-		toSerialize["launchedAt"] = o.LaunchedAt
+	if val, ok := getServerGetMaintenanceWindowAttributeTypeOk(o.MaintenanceWindow); ok {
+		toSerialize["MaintenanceWindow"] = val
 	}
-	toSerialize["machineType"] = o.MachineType
-	if !IsNil(o.MaintenanceWindow) {
-		toSerialize["maintenanceWindow"] = o.MaintenanceWindow
+	if val, ok := getServerGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Networking) {
-		toSerialize["networking"] = o.Networking
+	if val, ok := getServerGetNetworkingAttributeTypeOk(o.Networking); ok {
+		toSerialize["Networking"] = val
 	}
-	if !IsNil(o.Nics) {
-		toSerialize["nics"] = o.Nics
+	if val, ok := getServerGetNicsAttributeTypeOk(o.Nics); ok {
+		toSerialize["Nics"] = val
 	}
-	if !IsNil(o.PowerStatus) {
-		toSerialize["powerStatus"] = o.PowerStatus
+	if val, ok := getServerGetPowerStatusAttributeTypeOk(o.PowerStatus); ok {
+		toSerialize["PowerStatus"] = val
 	}
-	if !IsNil(o.SecurityGroups) {
-		toSerialize["securityGroups"] = o.SecurityGroups
+	if val, ok := getServerGetSecurityGroupsAttributeTypeOk(o.SecurityGroups); ok {
+		toSerialize["SecurityGroups"] = val
 	}
-	if !IsNil(o.ServiceAccountMails) {
-		toSerialize["serviceAccountMails"] = o.ServiceAccountMails
+	if val, ok := getServerGetServiceAccountMailsAttributeTypeOk(o.ServiceAccountMails); ok {
+		toSerialize["ServiceAccountMails"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getServerGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getServerGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
-	if !IsNil(o.UserData) {
-		toSerialize["userData"] = o.UserData
+	if val, ok := getServerGetUserDataAttributeTypeOk(o.UserData); ok {
+		toSerialize["UserData"] = val
 	}
-	if !IsNil(o.Volumes) {
-		toSerialize["volumes"] = o.Volumes
+	if val, ok := getServerGetVolumesAttributeTypeOk(o.Volumes); ok {
+		toSerialize["Volumes"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_server_console_url.go b/services/iaas/model_server_console_url.go
index e86c3ce07..46ac315be 100644
--- a/services/iaas/model_server_console_url.go
+++ b/services/iaas/model_server_console_url.go
@@ -17,10 +17,31 @@ import (
 // checks if the ServerConsoleUrl type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ServerConsoleUrl{}
 
+/*
+	types and functions for url
+*/
+
+// isNotNullableString
+type ServerConsoleUrlGetUrlAttributeType = *string
+
+func getServerConsoleUrlGetUrlAttributeTypeOk(arg ServerConsoleUrlGetUrlAttributeType) (ret ServerConsoleUrlGetUrlRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerConsoleUrlGetUrlAttributeType(arg *ServerConsoleUrlGetUrlAttributeType, val ServerConsoleUrlGetUrlRetType) {
+	*arg = &val
+}
+
+type ServerConsoleUrlGetUrlArgType = string
+type ServerConsoleUrlGetUrlRetType = string
+
 // ServerConsoleUrl Object that represents a server console URL.
 type ServerConsoleUrl struct {
 	// REQUIRED
-	Url *string `json:"url"`
+	Url ServerConsoleUrlGetUrlAttributeType `json:"url"`
 }
 
 type _ServerConsoleUrl ServerConsoleUrl
@@ -29,9 +50,9 @@ type _ServerConsoleUrl ServerConsoleUrl
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewServerConsoleUrl(url *string) *ServerConsoleUrl {
+func NewServerConsoleUrl(url ServerConsoleUrlGetUrlArgType) *ServerConsoleUrl {
 	this := ServerConsoleUrl{}
-	this.Url = url
+	setServerConsoleUrlGetUrlAttributeType(&this.Url, url)
 	return &this
 }
 
@@ -44,32 +65,27 @@ func NewServerConsoleUrlWithDefaults() *ServerConsoleUrl {
 }
 
 // GetUrl returns the Url field value
-func (o *ServerConsoleUrl) GetUrl() *string {
-	if o == nil || IsNil(o.Url) {
-		var ret *string
-		return ret
-	}
-
-	return o.Url
+func (o *ServerConsoleUrl) GetUrl() (ret ServerConsoleUrlGetUrlRetType) {
+	ret, _ = o.GetUrlOk()
+	return ret
 }
 
 // GetUrlOk returns a tuple with the Url field value
 // and a boolean to check if the value has been set.
-func (o *ServerConsoleUrl) GetUrlOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Url, true
+func (o *ServerConsoleUrl) GetUrlOk() (ret ServerConsoleUrlGetUrlRetType, ok bool) {
+	return getServerConsoleUrlGetUrlAttributeTypeOk(o.Url)
 }
 
 // SetUrl sets field value
-func (o *ServerConsoleUrl) SetUrl(v *string) {
-	o.Url = v
+func (o *ServerConsoleUrl) SetUrl(v ServerConsoleUrlGetUrlRetType) {
+	setServerConsoleUrlGetUrlAttributeType(&o.Url, v)
 }
 
 func (o ServerConsoleUrl) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["url"] = o.Url
+	if val, ok := getServerConsoleUrlGetUrlAttributeTypeOk(o.Url); ok {
+		toSerialize["Url"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_server_list_response.go b/services/iaas/model_server_list_response.go
index 7c501b914..71dcac947 100644
--- a/services/iaas/model_server_list_response.go
+++ b/services/iaas/model_server_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the ServerListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ServerListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type ServerListResponseGetItemsAttributeType = *[]Server
+type ServerListResponseGetItemsArgType = []Server
+type ServerListResponseGetItemsRetType = []Server
+
+func getServerListResponseGetItemsAttributeTypeOk(arg ServerListResponseGetItemsAttributeType) (ret ServerListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerListResponseGetItemsAttributeType(arg *ServerListResponseGetItemsAttributeType, val ServerListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // ServerListResponse Response object for server list request.
 type ServerListResponse struct {
 	// A list of servers.
 	// REQUIRED
-	Items *[]Server `json:"items"`
+	Items ServerListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _ServerListResponse ServerListResponse
@@ -30,9 +50,9 @@ type _ServerListResponse ServerListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewServerListResponse(items *[]Server) *ServerListResponse {
+func NewServerListResponse(items ServerListResponseGetItemsArgType) *ServerListResponse {
 	this := ServerListResponse{}
-	this.Items = items
+	setServerListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewServerListResponseWithDefaults() *ServerListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *ServerListResponse) GetItems() *[]Server {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Server
-		return ret
-	}
-
-	return o.Items
+func (o *ServerListResponse) GetItems() (ret ServerListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *ServerListResponse) GetItemsOk() (*[]Server, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *ServerListResponse) GetItemsOk() (ret ServerListResponseGetItemsRetType, ok bool) {
+	return getServerListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *ServerListResponse) SetItems(v *[]Server) {
-	o.Items = v
+func (o *ServerListResponse) SetItems(v ServerListResponseGetItemsRetType) {
+	setServerListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o ServerListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getServerListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_server_maintenance.go b/services/iaas/model_server_maintenance.go
index 00d1fd56f..bee76a9ed 100644
--- a/services/iaas/model_server_maintenance.go
+++ b/services/iaas/model_server_maintenance.go
@@ -18,17 +18,99 @@ import (
 // checks if the ServerMaintenance type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ServerMaintenance{}
 
+/*
+	types and functions for details
+*/
+
+// isNotNullableString
+type ServerMaintenanceGetDetailsAttributeType = *string
+
+func getServerMaintenanceGetDetailsAttributeTypeOk(arg ServerMaintenanceGetDetailsAttributeType) (ret ServerMaintenanceGetDetailsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerMaintenanceGetDetailsAttributeType(arg *ServerMaintenanceGetDetailsAttributeType, val ServerMaintenanceGetDetailsRetType) {
+	*arg = &val
+}
+
+type ServerMaintenanceGetDetailsArgType = string
+type ServerMaintenanceGetDetailsRetType = string
+
+/*
+	types and functions for endsAt
+*/
+
+// isDateTime
+type ServerMaintenanceGetEndsAtAttributeType = *time.Time
+type ServerMaintenanceGetEndsAtArgType = time.Time
+type ServerMaintenanceGetEndsAtRetType = time.Time
+
+func getServerMaintenanceGetEndsAtAttributeTypeOk(arg ServerMaintenanceGetEndsAtAttributeType) (ret ServerMaintenanceGetEndsAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerMaintenanceGetEndsAtAttributeType(arg *ServerMaintenanceGetEndsAtAttributeType, val ServerMaintenanceGetEndsAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for startsAt
+*/
+
+// isDateTime
+type ServerMaintenanceGetStartsAtAttributeType = *time.Time
+type ServerMaintenanceGetStartsAtArgType = time.Time
+type ServerMaintenanceGetStartsAtRetType = time.Time
+
+func getServerMaintenanceGetStartsAtAttributeTypeOk(arg ServerMaintenanceGetStartsAtAttributeType) (ret ServerMaintenanceGetStartsAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerMaintenanceGetStartsAtAttributeType(arg *ServerMaintenanceGetStartsAtAttributeType, val ServerMaintenanceGetStartsAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type ServerMaintenanceGetStatusAttributeType = *string
+
+func getServerMaintenanceGetStatusAttributeTypeOk(arg ServerMaintenanceGetStatusAttributeType) (ret ServerMaintenanceGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerMaintenanceGetStatusAttributeType(arg *ServerMaintenanceGetStatusAttributeType, val ServerMaintenanceGetStatusRetType) {
+	*arg = &val
+}
+
+type ServerMaintenanceGetStatusArgType = string
+type ServerMaintenanceGetStatusRetType = string
+
 // ServerMaintenance Object that represents the information about the next planned server maintenance window.
 type ServerMaintenance struct {
-	Details *string `json:"details,omitempty"`
+	Details ServerMaintenanceGetDetailsAttributeType `json:"details,omitempty"`
 	// End of the maintenance window.
 	// REQUIRED
-	EndsAt *time.Time `json:"endsAt"`
+	EndsAt ServerMaintenanceGetEndsAtAttributeType `json:"endsAt"`
 	// Start of the maintenance window.
 	// REQUIRED
-	StartsAt *time.Time `json:"startsAt"`
+	StartsAt ServerMaintenanceGetStartsAtAttributeType `json:"startsAt"`
 	// REQUIRED
-	Status *string `json:"status"`
+	Status ServerMaintenanceGetStatusAttributeType `json:"status"`
 }
 
 type _ServerMaintenance ServerMaintenance
@@ -37,11 +119,11 @@ type _ServerMaintenance ServerMaintenance
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewServerMaintenance(endsAt *time.Time, startsAt *time.Time, status *string) *ServerMaintenance {
+func NewServerMaintenance(endsAt ServerMaintenanceGetEndsAtArgType, startsAt ServerMaintenanceGetStartsAtArgType, status ServerMaintenanceGetStatusArgType) *ServerMaintenance {
 	this := ServerMaintenance{}
-	this.EndsAt = endsAt
-	this.StartsAt = startsAt
-	this.Status = status
+	setServerMaintenanceGetEndsAtAttributeType(&this.EndsAt, endsAt)
+	setServerMaintenanceGetStartsAtAttributeType(&this.StartsAt, startsAt)
+	setServerMaintenanceGetStatusAttributeType(&this.Status, status)
 	return &this
 }
 
@@ -54,117 +136,93 @@ func NewServerMaintenanceWithDefaults() *ServerMaintenance {
 }
 
 // GetDetails returns the Details field value if set, zero value otherwise.
-func (o *ServerMaintenance) GetDetails() *string {
-	if o == nil || IsNil(o.Details) {
-		var ret *string
-		return ret
-	}
-	return o.Details
+func (o *ServerMaintenance) GetDetails() (res ServerMaintenanceGetDetailsRetType) {
+	res, _ = o.GetDetailsOk()
+	return
 }
 
 // GetDetailsOk returns a tuple with the Details field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ServerMaintenance) GetDetailsOk() (*string, bool) {
-	if o == nil || IsNil(o.Details) {
-		return nil, false
-	}
-	return o.Details, true
+func (o *ServerMaintenance) GetDetailsOk() (ret ServerMaintenanceGetDetailsRetType, ok bool) {
+	return getServerMaintenanceGetDetailsAttributeTypeOk(o.Details)
 }
 
 // HasDetails returns a boolean if a field has been set.
 func (o *ServerMaintenance) HasDetails() bool {
-	if o != nil && !IsNil(o.Details) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDetailsOk()
+	return ok
 }
 
 // SetDetails gets a reference to the given string and assigns it to the Details field.
-func (o *ServerMaintenance) SetDetails(v *string) {
-	o.Details = v
+func (o *ServerMaintenance) SetDetails(v ServerMaintenanceGetDetailsRetType) {
+	setServerMaintenanceGetDetailsAttributeType(&o.Details, v)
 }
 
 // GetEndsAt returns the EndsAt field value
-func (o *ServerMaintenance) GetEndsAt() *time.Time {
-	if o == nil || IsNil(o.EndsAt) {
-		var ret *time.Time
-		return ret
-	}
-
-	return o.EndsAt
+func (o *ServerMaintenance) GetEndsAt() (ret ServerMaintenanceGetEndsAtRetType) {
+	ret, _ = o.GetEndsAtOk()
+	return ret
 }
 
 // GetEndsAtOk returns a tuple with the EndsAt field value
 // and a boolean to check if the value has been set.
-func (o *ServerMaintenance) GetEndsAtOk() (*time.Time, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.EndsAt, true
+func (o *ServerMaintenance) GetEndsAtOk() (ret ServerMaintenanceGetEndsAtRetType, ok bool) {
+	return getServerMaintenanceGetEndsAtAttributeTypeOk(o.EndsAt)
 }
 
 // SetEndsAt sets field value
-func (o *ServerMaintenance) SetEndsAt(v *time.Time) {
-	o.EndsAt = v
+func (o *ServerMaintenance) SetEndsAt(v ServerMaintenanceGetEndsAtRetType) {
+	setServerMaintenanceGetEndsAtAttributeType(&o.EndsAt, v)
 }
 
 // GetStartsAt returns the StartsAt field value
-func (o *ServerMaintenance) GetStartsAt() *time.Time {
-	if o == nil || IsNil(o.StartsAt) {
-		var ret *time.Time
-		return ret
-	}
-
-	return o.StartsAt
+func (o *ServerMaintenance) GetStartsAt() (ret ServerMaintenanceGetStartsAtRetType) {
+	ret, _ = o.GetStartsAtOk()
+	return ret
 }
 
 // GetStartsAtOk returns a tuple with the StartsAt field value
 // and a boolean to check if the value has been set.
-func (o *ServerMaintenance) GetStartsAtOk() (*time.Time, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.StartsAt, true
+func (o *ServerMaintenance) GetStartsAtOk() (ret ServerMaintenanceGetStartsAtRetType, ok bool) {
+	return getServerMaintenanceGetStartsAtAttributeTypeOk(o.StartsAt)
 }
 
 // SetStartsAt sets field value
-func (o *ServerMaintenance) SetStartsAt(v *time.Time) {
-	o.StartsAt = v
+func (o *ServerMaintenance) SetStartsAt(v ServerMaintenanceGetStartsAtRetType) {
+	setServerMaintenanceGetStartsAtAttributeType(&o.StartsAt, v)
 }
 
 // GetStatus returns the Status field value
-func (o *ServerMaintenance) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-
-	return o.Status
+func (o *ServerMaintenance) GetStatus() (ret ServerMaintenanceGetStatusRetType) {
+	ret, _ = o.GetStatusOk()
+	return ret
 }
 
 // GetStatusOk returns a tuple with the Status field value
 // and a boolean to check if the value has been set.
-func (o *ServerMaintenance) GetStatusOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Status, true
+func (o *ServerMaintenance) GetStatusOk() (ret ServerMaintenanceGetStatusRetType, ok bool) {
+	return getServerMaintenanceGetStatusAttributeTypeOk(o.Status)
 }
 
 // SetStatus sets field value
-func (o *ServerMaintenance) SetStatus(v *string) {
-	o.Status = v
+func (o *ServerMaintenance) SetStatus(v ServerMaintenanceGetStatusRetType) {
+	setServerMaintenanceGetStatusAttributeType(&o.Status, v)
 }
 
 func (o ServerMaintenance) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Details) {
-		toSerialize["details"] = o.Details
+	if val, ok := getServerMaintenanceGetDetailsAttributeTypeOk(o.Details); ok {
+		toSerialize["Details"] = val
+	}
+	if val, ok := getServerMaintenanceGetEndsAtAttributeTypeOk(o.EndsAt); ok {
+		toSerialize["EndsAt"] = val
+	}
+	if val, ok := getServerMaintenanceGetStartsAtAttributeTypeOk(o.StartsAt); ok {
+		toSerialize["StartsAt"] = val
+	}
+	if val, ok := getServerMaintenanceGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	toSerialize["endsAt"] = o.EndsAt
-	toSerialize["startsAt"] = o.StartsAt
-	toSerialize["status"] = o.Status
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_server_network.go b/services/iaas/model_server_network.go
index dffc21658..36e54c957 100644
--- a/services/iaas/model_server_network.go
+++ b/services/iaas/model_server_network.go
@@ -17,33 +17,240 @@ import (
 // checks if the ServerNetwork type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ServerNetwork{}
 
+/*
+	types and functions for allowedAddresses
+*/
+
+// isArray
+type ServerNetworkGetAllowedAddressesAttributeType = *[]AllowedAddressesInner
+type ServerNetworkGetAllowedAddressesArgType = []AllowedAddressesInner
+type ServerNetworkGetAllowedAddressesRetType = []AllowedAddressesInner
+
+func getServerNetworkGetAllowedAddressesAttributeTypeOk(arg ServerNetworkGetAllowedAddressesAttributeType) (ret ServerNetworkGetAllowedAddressesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetAllowedAddressesAttributeType(arg *ServerNetworkGetAllowedAddressesAttributeType, val ServerNetworkGetAllowedAddressesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for ipv4
+*/
+
+// isNotNullableString
+type ServerNetworkGetIpv4AttributeType = *string
+
+func getServerNetworkGetIpv4AttributeTypeOk(arg ServerNetworkGetIpv4AttributeType) (ret ServerNetworkGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetIpv4AttributeType(arg *ServerNetworkGetIpv4AttributeType, val ServerNetworkGetIpv4RetType) {
+	*arg = &val
+}
+
+type ServerNetworkGetIpv4ArgType = string
+type ServerNetworkGetIpv4RetType = string
+
+/*
+	types and functions for ipv6
+*/
+
+// isNotNullableString
+type ServerNetworkGetIpv6AttributeType = *string
+
+func getServerNetworkGetIpv6AttributeTypeOk(arg ServerNetworkGetIpv6AttributeType) (ret ServerNetworkGetIpv6RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetIpv6AttributeType(arg *ServerNetworkGetIpv6AttributeType, val ServerNetworkGetIpv6RetType) {
+	*arg = &val
+}
+
+type ServerNetworkGetIpv6ArgType = string
+type ServerNetworkGetIpv6RetType = string
+
+/*
+	types and functions for mac
+*/
+
+// isNotNullableString
+type ServerNetworkGetMacAttributeType = *string
+
+func getServerNetworkGetMacAttributeTypeOk(arg ServerNetworkGetMacAttributeType) (ret ServerNetworkGetMacRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetMacAttributeType(arg *ServerNetworkGetMacAttributeType, val ServerNetworkGetMacRetType) {
+	*arg = &val
+}
+
+type ServerNetworkGetMacArgType = string
+type ServerNetworkGetMacRetType = string
+
+/*
+	types and functions for networkId
+*/
+
+// isNotNullableString
+type ServerNetworkGetNetworkIdAttributeType = *string
+
+func getServerNetworkGetNetworkIdAttributeTypeOk(arg ServerNetworkGetNetworkIdAttributeType) (ret ServerNetworkGetNetworkIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetNetworkIdAttributeType(arg *ServerNetworkGetNetworkIdAttributeType, val ServerNetworkGetNetworkIdRetType) {
+	*arg = &val
+}
+
+type ServerNetworkGetNetworkIdArgType = string
+type ServerNetworkGetNetworkIdRetType = string
+
+/*
+	types and functions for networkName
+*/
+
+// isNotNullableString
+type ServerNetworkGetNetworkNameAttributeType = *string
+
+func getServerNetworkGetNetworkNameAttributeTypeOk(arg ServerNetworkGetNetworkNameAttributeType) (ret ServerNetworkGetNetworkNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetNetworkNameAttributeType(arg *ServerNetworkGetNetworkNameAttributeType, val ServerNetworkGetNetworkNameRetType) {
+	*arg = &val
+}
+
+type ServerNetworkGetNetworkNameArgType = string
+type ServerNetworkGetNetworkNameRetType = string
+
+/*
+	types and functions for nicId
+*/
+
+// isNotNullableString
+type ServerNetworkGetNicIdAttributeType = *string
+
+func getServerNetworkGetNicIdAttributeTypeOk(arg ServerNetworkGetNicIdAttributeType) (ret ServerNetworkGetNicIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetNicIdAttributeType(arg *ServerNetworkGetNicIdAttributeType, val ServerNetworkGetNicIdRetType) {
+	*arg = &val
+}
+
+type ServerNetworkGetNicIdArgType = string
+type ServerNetworkGetNicIdRetType = string
+
+/*
+	types and functions for nicSecurity
+*/
+
+// isBoolean
+type ServerNetworkgetNicSecurityAttributeType = *bool
+type ServerNetworkgetNicSecurityArgType = bool
+type ServerNetworkgetNicSecurityRetType = bool
+
+func getServerNetworkgetNicSecurityAttributeTypeOk(arg ServerNetworkgetNicSecurityAttributeType) (ret ServerNetworkgetNicSecurityRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkgetNicSecurityAttributeType(arg *ServerNetworkgetNicSecurityAttributeType, val ServerNetworkgetNicSecurityRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for publicIp
+*/
+
+// isNotNullableString
+type ServerNetworkGetPublicIpAttributeType = *string
+
+func getServerNetworkGetPublicIpAttributeTypeOk(arg ServerNetworkGetPublicIpAttributeType) (ret ServerNetworkGetPublicIpRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetPublicIpAttributeType(arg *ServerNetworkGetPublicIpAttributeType, val ServerNetworkGetPublicIpRetType) {
+	*arg = &val
+}
+
+type ServerNetworkGetPublicIpArgType = string
+type ServerNetworkGetPublicIpRetType = string
+
+/*
+	types and functions for securityGroups
+*/
+
+// isArray
+type ServerNetworkGetSecurityGroupsAttributeType = *[]string
+type ServerNetworkGetSecurityGroupsArgType = []string
+type ServerNetworkGetSecurityGroupsRetType = []string
+
+func getServerNetworkGetSecurityGroupsAttributeTypeOk(arg ServerNetworkGetSecurityGroupsAttributeType) (ret ServerNetworkGetSecurityGroupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServerNetworkGetSecurityGroupsAttributeType(arg *ServerNetworkGetSecurityGroupsAttributeType, val ServerNetworkGetSecurityGroupsRetType) {
+	*arg = &val
+}
+
 // ServerNetwork Describes the object that matches servers to its networks.
 type ServerNetwork struct {
 	// A list of IPs or CIDR notations.
-	AllowedAddresses *[]AllowedAddressesInner `json:"allowedAddresses,omitempty"`
+	AllowedAddresses ServerNetworkGetAllowedAddressesAttributeType `json:"allowedAddresses,omitempty"`
 	// Object that represents an IP address.
-	Ipv4 *string `json:"ipv4,omitempty"`
+	Ipv4 ServerNetworkGetIpv4AttributeType `json:"ipv4,omitempty"`
 	// Object that represents an IPv6 address.
-	Ipv6 *string `json:"ipv6,omitempty"`
+	Ipv6 ServerNetworkGetIpv6AttributeType `json:"ipv6,omitempty"`
 	// Object that represents an MAC address.
 	// REQUIRED
-	Mac *string `json:"mac"`
+	Mac ServerNetworkGetMacAttributeType `json:"mac"`
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	NetworkId *string `json:"networkId"`
+	NetworkId ServerNetworkGetNetworkIdAttributeType `json:"networkId"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	NetworkName *string `json:"networkName"`
+	NetworkName ServerNetworkGetNetworkNameAttributeType `json:"networkName"`
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	NicId *string `json:"nicId"`
+	NicId ServerNetworkGetNicIdAttributeType `json:"nicId"`
 	// If this is set to false, then no security groups will apply to this server network interface.
 	// REQUIRED
-	NicSecurity *bool `json:"nicSecurity"`
+	NicSecurity ServerNetworkgetNicSecurityAttributeType `json:"nicSecurity"`
 	// Object that represents an IP address.
-	PublicIp *string `json:"publicIp,omitempty"`
+	PublicIp ServerNetworkGetPublicIpAttributeType `json:"publicIp,omitempty"`
 	// A list of UUIDs.
-	SecurityGroups *[]string `json:"securityGroups,omitempty"`
+	SecurityGroups ServerNetworkGetSecurityGroupsAttributeType `json:"securityGroups,omitempty"`
 }
 
 type _ServerNetwork ServerNetwork
@@ -52,13 +259,13 @@ type _ServerNetwork ServerNetwork
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewServerNetwork(mac *string, networkId *string, networkName *string, nicId *string, nicSecurity *bool) *ServerNetwork {
+func NewServerNetwork(mac ServerNetworkGetMacArgType, networkId ServerNetworkGetNetworkIdArgType, networkName ServerNetworkGetNetworkNameArgType, nicId ServerNetworkGetNicIdArgType, nicSecurity ServerNetworkgetNicSecurityArgType) *ServerNetwork {
 	this := ServerNetwork{}
-	this.Mac = mac
-	this.NetworkId = networkId
-	this.NetworkName = networkName
-	this.NicId = nicId
-	this.NicSecurity = nicSecurity
+	setServerNetworkGetMacAttributeType(&this.Mac, mac)
+	setServerNetworkGetNetworkIdAttributeType(&this.NetworkId, networkId)
+	setServerNetworkGetNetworkNameAttributeType(&this.NetworkName, networkName)
+	setServerNetworkGetNicIdAttributeType(&this.NicId, nicId)
+	setServerNetworkgetNicSecurityAttributeType(&this.NicSecurity, nicSecurity)
 	return &this
 }
 
@@ -71,306 +278,236 @@ func NewServerNetworkWithDefaults() *ServerNetwork {
 }
 
 // GetAllowedAddresses returns the AllowedAddresses field value if set, zero value otherwise.
-func (o *ServerNetwork) GetAllowedAddresses() *[]AllowedAddressesInner {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		var ret *[]AllowedAddressesInner
-		return ret
-	}
-	return o.AllowedAddresses
+func (o *ServerNetwork) GetAllowedAddresses() (res ServerNetworkGetAllowedAddressesRetType) {
+	res, _ = o.GetAllowedAddressesOk()
+	return
 }
 
 // GetAllowedAddressesOk returns a tuple with the AllowedAddresses field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetAllowedAddressesOk() (*[]AllowedAddressesInner, bool) {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		return nil, false
-	}
-	return o.AllowedAddresses, true
+func (o *ServerNetwork) GetAllowedAddressesOk() (ret ServerNetworkGetAllowedAddressesRetType, ok bool) {
+	return getServerNetworkGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses)
 }
 
 // HasAllowedAddresses returns a boolean if a field has been set.
 func (o *ServerNetwork) HasAllowedAddresses() bool {
-	if o != nil && !IsNil(o.AllowedAddresses) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAllowedAddressesOk()
+	return ok
 }
 
 // SetAllowedAddresses gets a reference to the given []AllowedAddressesInner and assigns it to the AllowedAddresses field.
-func (o *ServerNetwork) SetAllowedAddresses(v *[]AllowedAddressesInner) {
-	o.AllowedAddresses = v
+func (o *ServerNetwork) SetAllowedAddresses(v ServerNetworkGetAllowedAddressesRetType) {
+	setServerNetworkGetAllowedAddressesAttributeType(&o.AllowedAddresses, v)
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *ServerNetwork) GetIpv4() *string {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *string
-		return ret
-	}
-	return o.Ipv4
+func (o *ServerNetwork) GetIpv4() (res ServerNetworkGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetIpv4Ok() (*string, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *ServerNetwork) GetIpv4Ok() (ret ServerNetworkGetIpv4RetType, ok bool) {
+	return getServerNetworkGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *ServerNetwork) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given string and assigns it to the Ipv4 field.
-func (o *ServerNetwork) SetIpv4(v *string) {
-	o.Ipv4 = v
+func (o *ServerNetwork) SetIpv4(v ServerNetworkGetIpv4RetType) {
+	setServerNetworkGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 // GetIpv6 returns the Ipv6 field value if set, zero value otherwise.
-func (o *ServerNetwork) GetIpv6() *string {
-	if o == nil || IsNil(o.Ipv6) {
-		var ret *string
-		return ret
-	}
-	return o.Ipv6
+func (o *ServerNetwork) GetIpv6() (res ServerNetworkGetIpv6RetType) {
+	res, _ = o.GetIpv6Ok()
+	return
 }
 
 // GetIpv6Ok returns a tuple with the Ipv6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetIpv6Ok() (*string, bool) {
-	if o == nil || IsNil(o.Ipv6) {
-		return nil, false
-	}
-	return o.Ipv6, true
+func (o *ServerNetwork) GetIpv6Ok() (ret ServerNetworkGetIpv6RetType, ok bool) {
+	return getServerNetworkGetIpv6AttributeTypeOk(o.Ipv6)
 }
 
 // HasIpv6 returns a boolean if a field has been set.
 func (o *ServerNetwork) HasIpv6() bool {
-	if o != nil && !IsNil(o.Ipv6) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv6Ok()
+	return ok
 }
 
 // SetIpv6 gets a reference to the given string and assigns it to the Ipv6 field.
-func (o *ServerNetwork) SetIpv6(v *string) {
-	o.Ipv6 = v
+func (o *ServerNetwork) SetIpv6(v ServerNetworkGetIpv6RetType) {
+	setServerNetworkGetIpv6AttributeType(&o.Ipv6, v)
 }
 
 // GetMac returns the Mac field value
-func (o *ServerNetwork) GetMac() *string {
-	if o == nil || IsNil(o.Mac) {
-		var ret *string
-		return ret
-	}
-
-	return o.Mac
+func (o *ServerNetwork) GetMac() (ret ServerNetworkGetMacRetType) {
+	ret, _ = o.GetMacOk()
+	return ret
 }
 
 // GetMacOk returns a tuple with the Mac field value
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetMacOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Mac, true
+func (o *ServerNetwork) GetMacOk() (ret ServerNetworkGetMacRetType, ok bool) {
+	return getServerNetworkGetMacAttributeTypeOk(o.Mac)
 }
 
 // SetMac sets field value
-func (o *ServerNetwork) SetMac(v *string) {
-	o.Mac = v
+func (o *ServerNetwork) SetMac(v ServerNetworkGetMacRetType) {
+	setServerNetworkGetMacAttributeType(&o.Mac, v)
 }
 
 // GetNetworkId returns the NetworkId field value
-func (o *ServerNetwork) GetNetworkId() *string {
-	if o == nil || IsNil(o.NetworkId) {
-		var ret *string
-		return ret
-	}
-
-	return o.NetworkId
+func (o *ServerNetwork) GetNetworkId() (ret ServerNetworkGetNetworkIdRetType) {
+	ret, _ = o.GetNetworkIdOk()
+	return ret
 }
 
 // GetNetworkIdOk returns a tuple with the NetworkId field value
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetNetworkIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.NetworkId, true
+func (o *ServerNetwork) GetNetworkIdOk() (ret ServerNetworkGetNetworkIdRetType, ok bool) {
+	return getServerNetworkGetNetworkIdAttributeTypeOk(o.NetworkId)
 }
 
 // SetNetworkId sets field value
-func (o *ServerNetwork) SetNetworkId(v *string) {
-	o.NetworkId = v
+func (o *ServerNetwork) SetNetworkId(v ServerNetworkGetNetworkIdRetType) {
+	setServerNetworkGetNetworkIdAttributeType(&o.NetworkId, v)
 }
 
 // GetNetworkName returns the NetworkName field value
-func (o *ServerNetwork) GetNetworkName() *string {
-	if o == nil || IsNil(o.NetworkName) {
-		var ret *string
-		return ret
-	}
-
-	return o.NetworkName
+func (o *ServerNetwork) GetNetworkName() (ret ServerNetworkGetNetworkNameRetType) {
+	ret, _ = o.GetNetworkNameOk()
+	return ret
 }
 
 // GetNetworkNameOk returns a tuple with the NetworkName field value
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetNetworkNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.NetworkName, true
+func (o *ServerNetwork) GetNetworkNameOk() (ret ServerNetworkGetNetworkNameRetType, ok bool) {
+	return getServerNetworkGetNetworkNameAttributeTypeOk(o.NetworkName)
 }
 
 // SetNetworkName sets field value
-func (o *ServerNetwork) SetNetworkName(v *string) {
-	o.NetworkName = v
+func (o *ServerNetwork) SetNetworkName(v ServerNetworkGetNetworkNameRetType) {
+	setServerNetworkGetNetworkNameAttributeType(&o.NetworkName, v)
 }
 
 // GetNicId returns the NicId field value
-func (o *ServerNetwork) GetNicId() *string {
-	if o == nil || IsNil(o.NicId) {
-		var ret *string
-		return ret
-	}
-
-	return o.NicId
+func (o *ServerNetwork) GetNicId() (ret ServerNetworkGetNicIdRetType) {
+	ret, _ = o.GetNicIdOk()
+	return ret
 }
 
 // GetNicIdOk returns a tuple with the NicId field value
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetNicIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.NicId, true
+func (o *ServerNetwork) GetNicIdOk() (ret ServerNetworkGetNicIdRetType, ok bool) {
+	return getServerNetworkGetNicIdAttributeTypeOk(o.NicId)
 }
 
 // SetNicId sets field value
-func (o *ServerNetwork) SetNicId(v *string) {
-	o.NicId = v
+func (o *ServerNetwork) SetNicId(v ServerNetworkGetNicIdRetType) {
+	setServerNetworkGetNicIdAttributeType(&o.NicId, v)
 }
 
 // GetNicSecurity returns the NicSecurity field value
-func (o *ServerNetwork) GetNicSecurity() *bool {
-	if o == nil || IsNil(o.NicSecurity) {
-		var ret *bool
-		return ret
-	}
-
-	return o.NicSecurity
+func (o *ServerNetwork) GetNicSecurity() (ret ServerNetworkgetNicSecurityRetType) {
+	ret, _ = o.GetNicSecurityOk()
+	return ret
 }
 
 // GetNicSecurityOk returns a tuple with the NicSecurity field value
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetNicSecurityOk() (*bool, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.NicSecurity, true
+func (o *ServerNetwork) GetNicSecurityOk() (ret ServerNetworkgetNicSecurityRetType, ok bool) {
+	return getServerNetworkgetNicSecurityAttributeTypeOk(o.NicSecurity)
 }
 
 // SetNicSecurity sets field value
-func (o *ServerNetwork) SetNicSecurity(v *bool) {
-	o.NicSecurity = v
+func (o *ServerNetwork) SetNicSecurity(v ServerNetworkgetNicSecurityRetType) {
+	setServerNetworkgetNicSecurityAttributeType(&o.NicSecurity, v)
 }
 
 // GetPublicIp returns the PublicIp field value if set, zero value otherwise.
-func (o *ServerNetwork) GetPublicIp() *string {
-	if o == nil || IsNil(o.PublicIp) {
-		var ret *string
-		return ret
-	}
-	return o.PublicIp
+func (o *ServerNetwork) GetPublicIp() (res ServerNetworkGetPublicIpRetType) {
+	res, _ = o.GetPublicIpOk()
+	return
 }
 
 // GetPublicIpOk returns a tuple with the PublicIp field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetPublicIpOk() (*string, bool) {
-	if o == nil || IsNil(o.PublicIp) {
-		return nil, false
-	}
-	return o.PublicIp, true
+func (o *ServerNetwork) GetPublicIpOk() (ret ServerNetworkGetPublicIpRetType, ok bool) {
+	return getServerNetworkGetPublicIpAttributeTypeOk(o.PublicIp)
 }
 
 // HasPublicIp returns a boolean if a field has been set.
 func (o *ServerNetwork) HasPublicIp() bool {
-	if o != nil && !IsNil(o.PublicIp) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPublicIpOk()
+	return ok
 }
 
 // SetPublicIp gets a reference to the given string and assigns it to the PublicIp field.
-func (o *ServerNetwork) SetPublicIp(v *string) {
-	o.PublicIp = v
+func (o *ServerNetwork) SetPublicIp(v ServerNetworkGetPublicIpRetType) {
+	setServerNetworkGetPublicIpAttributeType(&o.PublicIp, v)
 }
 
 // GetSecurityGroups returns the SecurityGroups field value if set, zero value otherwise.
-func (o *ServerNetwork) GetSecurityGroups() *[]string {
-	if o == nil || IsNil(o.SecurityGroups) {
-		var ret *[]string
-		return ret
-	}
-	return o.SecurityGroups
+func (o *ServerNetwork) GetSecurityGroups() (res ServerNetworkGetSecurityGroupsRetType) {
+	res, _ = o.GetSecurityGroupsOk()
+	return
 }
 
 // GetSecurityGroupsOk returns a tuple with the SecurityGroups field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ServerNetwork) GetSecurityGroupsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.SecurityGroups) {
-		return nil, false
-	}
-	return o.SecurityGroups, true
+func (o *ServerNetwork) GetSecurityGroupsOk() (ret ServerNetworkGetSecurityGroupsRetType, ok bool) {
+	return getServerNetworkGetSecurityGroupsAttributeTypeOk(o.SecurityGroups)
 }
 
 // HasSecurityGroups returns a boolean if a field has been set.
 func (o *ServerNetwork) HasSecurityGroups() bool {
-	if o != nil && !IsNil(o.SecurityGroups) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupsOk()
+	return ok
 }
 
 // SetSecurityGroups gets a reference to the given []string and assigns it to the SecurityGroups field.
-func (o *ServerNetwork) SetSecurityGroups(v *[]string) {
-	o.SecurityGroups = v
+func (o *ServerNetwork) SetSecurityGroups(v ServerNetworkGetSecurityGroupsRetType) {
+	setServerNetworkGetSecurityGroupsAttributeType(&o.SecurityGroups, v)
 }
 
 func (o ServerNetwork) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AllowedAddresses) {
-		toSerialize["allowedAddresses"] = o.AllowedAddresses
+	if val, ok := getServerNetworkGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses); ok {
+		toSerialize["AllowedAddresses"] = val
+	}
+	if val, ok := getServerNetworkGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
+	}
+	if val, ok := getServerNetworkGetIpv6AttributeTypeOk(o.Ipv6); ok {
+		toSerialize["Ipv6"] = val
+	}
+	if val, ok := getServerNetworkGetMacAttributeTypeOk(o.Mac); ok {
+		toSerialize["Mac"] = val
+	}
+	if val, ok := getServerNetworkGetNetworkIdAttributeTypeOk(o.NetworkId); ok {
+		toSerialize["NetworkId"] = val
+	}
+	if val, ok := getServerNetworkGetNetworkNameAttributeTypeOk(o.NetworkName); ok {
+		toSerialize["NetworkName"] = val
 	}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getServerNetworkGetNicIdAttributeTypeOk(o.NicId); ok {
+		toSerialize["NicId"] = val
 	}
-	if !IsNil(o.Ipv6) {
-		toSerialize["ipv6"] = o.Ipv6
+	if val, ok := getServerNetworkgetNicSecurityAttributeTypeOk(o.NicSecurity); ok {
+		toSerialize["NicSecurity"] = val
 	}
-	toSerialize["mac"] = o.Mac
-	toSerialize["networkId"] = o.NetworkId
-	toSerialize["networkName"] = o.NetworkName
-	toSerialize["nicId"] = o.NicId
-	toSerialize["nicSecurity"] = o.NicSecurity
-	if !IsNil(o.PublicIp) {
-		toSerialize["publicIp"] = o.PublicIp
+	if val, ok := getServerNetworkGetPublicIpAttributeTypeOk(o.PublicIp); ok {
+		toSerialize["PublicIp"] = val
 	}
-	if !IsNil(o.SecurityGroups) {
-		toSerialize["securityGroups"] = o.SecurityGroups
+	if val, ok := getServerNetworkGetSecurityGroupsAttributeTypeOk(o.SecurityGroups); ok {
+		toSerialize["SecurityGroups"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_service_account_mail_list_response.go b/services/iaas/model_service_account_mail_list_response.go
index 689fd6470..1a7bc1ed7 100644
--- a/services/iaas/model_service_account_mail_list_response.go
+++ b/services/iaas/model_service_account_mail_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the ServiceAccountMailListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &ServiceAccountMailListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type ServiceAccountMailListResponseGetItemsAttributeType = *[]string
+type ServiceAccountMailListResponseGetItemsArgType = []string
+type ServiceAccountMailListResponseGetItemsRetType = []string
+
+func getServiceAccountMailListResponseGetItemsAttributeTypeOk(arg ServiceAccountMailListResponseGetItemsAttributeType) (ret ServiceAccountMailListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setServiceAccountMailListResponseGetItemsAttributeType(arg *ServiceAccountMailListResponseGetItemsAttributeType, val ServiceAccountMailListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // ServiceAccountMailListResponse Service account mail list response.
 type ServiceAccountMailListResponse struct {
 	// A list of service account mails.
 	// REQUIRED
-	Items *[]string `json:"items"`
+	Items ServiceAccountMailListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _ServiceAccountMailListResponse ServiceAccountMailListResponse
@@ -30,9 +50,9 @@ type _ServiceAccountMailListResponse ServiceAccountMailListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewServiceAccountMailListResponse(items *[]string) *ServiceAccountMailListResponse {
+func NewServiceAccountMailListResponse(items ServiceAccountMailListResponseGetItemsArgType) *ServiceAccountMailListResponse {
 	this := ServiceAccountMailListResponse{}
-	this.Items = items
+	setServiceAccountMailListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewServiceAccountMailListResponseWithDefaults() *ServiceAccountMailListResp
 }
 
 // GetItems returns the Items field value
-func (o *ServiceAccountMailListResponse) GetItems() *[]string {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]string
-		return ret
-	}
-
-	return o.Items
+func (o *ServiceAccountMailListResponse) GetItems() (ret ServiceAccountMailListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *ServiceAccountMailListResponse) GetItemsOk() (*[]string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *ServiceAccountMailListResponse) GetItemsOk() (ret ServiceAccountMailListResponseGetItemsRetType, ok bool) {
+	return getServiceAccountMailListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *ServiceAccountMailListResponse) SetItems(v *[]string) {
-	o.Items = v
+func (o *ServiceAccountMailListResponse) SetItems(v ServiceAccountMailListResponseGetItemsRetType) {
+	setServiceAccountMailListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o ServiceAccountMailListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getServiceAccountMailListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_set_image_share_payload.go b/services/iaas/model_set_image_share_payload.go
index bc72e77b0..158f51949 100644
--- a/services/iaas/model_set_image_share_payload.go
+++ b/services/iaas/model_set_image_share_payload.go
@@ -17,12 +17,52 @@ import (
 // checks if the SetImageSharePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &SetImageSharePayload{}
 
+/*
+	types and functions for parentOrganization
+*/
+
+// isBoolean
+type SetImageSharePayloadgetParentOrganizationAttributeType = *bool
+type SetImageSharePayloadgetParentOrganizationArgType = bool
+type SetImageSharePayloadgetParentOrganizationRetType = bool
+
+func getSetImageSharePayloadgetParentOrganizationAttributeTypeOk(arg SetImageSharePayloadgetParentOrganizationAttributeType) (ret SetImageSharePayloadgetParentOrganizationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSetImageSharePayloadgetParentOrganizationAttributeType(arg *SetImageSharePayloadgetParentOrganizationAttributeType, val SetImageSharePayloadgetParentOrganizationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for projects
+*/
+
+// isArray
+type SetImageSharePayloadGetProjectsAttributeType = *[]string
+type SetImageSharePayloadGetProjectsArgType = []string
+type SetImageSharePayloadGetProjectsRetType = []string
+
+func getSetImageSharePayloadGetProjectsAttributeTypeOk(arg SetImageSharePayloadGetProjectsAttributeType) (ret SetImageSharePayloadGetProjectsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSetImageSharePayloadGetProjectsAttributeType(arg *SetImageSharePayloadGetProjectsAttributeType, val SetImageSharePayloadGetProjectsRetType) {
+	*arg = &val
+}
+
 // SetImageSharePayload Share details of an Image. For requests ParentOrganization and Projects are mutually exclusive.
 type SetImageSharePayload struct {
 	// Image is shared with all projects inside the image owners organization.
-	ParentOrganization *bool `json:"parentOrganization,omitempty"`
+	ParentOrganization SetImageSharePayloadgetParentOrganizationAttributeType `json:"parentOrganization,omitempty"`
 	// List of all projects the Image is shared with.
-	Projects *[]string `json:"projects,omitempty"`
+	Projects SetImageSharePayloadGetProjectsAttributeType `json:"projects,omitempty"`
 }
 
 // NewSetImageSharePayload instantiates a new SetImageSharePayload object
@@ -43,76 +83,58 @@ func NewSetImageSharePayloadWithDefaults() *SetImageSharePayload {
 }
 
 // GetParentOrganization returns the ParentOrganization field value if set, zero value otherwise.
-func (o *SetImageSharePayload) GetParentOrganization() *bool {
-	if o == nil || IsNil(o.ParentOrganization) {
-		var ret *bool
-		return ret
-	}
-	return o.ParentOrganization
+func (o *SetImageSharePayload) GetParentOrganization() (res SetImageSharePayloadgetParentOrganizationRetType) {
+	res, _ = o.GetParentOrganizationOk()
+	return
 }
 
 // GetParentOrganizationOk returns a tuple with the ParentOrganization field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SetImageSharePayload) GetParentOrganizationOk() (*bool, bool) {
-	if o == nil || IsNil(o.ParentOrganization) {
-		return nil, false
-	}
-	return o.ParentOrganization, true
+func (o *SetImageSharePayload) GetParentOrganizationOk() (ret SetImageSharePayloadgetParentOrganizationRetType, ok bool) {
+	return getSetImageSharePayloadgetParentOrganizationAttributeTypeOk(o.ParentOrganization)
 }
 
 // HasParentOrganization returns a boolean if a field has been set.
 func (o *SetImageSharePayload) HasParentOrganization() bool {
-	if o != nil && !IsNil(o.ParentOrganization) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetParentOrganizationOk()
+	return ok
 }
 
 // SetParentOrganization gets a reference to the given bool and assigns it to the ParentOrganization field.
-func (o *SetImageSharePayload) SetParentOrganization(v *bool) {
-	o.ParentOrganization = v
+func (o *SetImageSharePayload) SetParentOrganization(v SetImageSharePayloadgetParentOrganizationRetType) {
+	setSetImageSharePayloadgetParentOrganizationAttributeType(&o.ParentOrganization, v)
 }
 
 // GetProjects returns the Projects field value if set, zero value otherwise.
-func (o *SetImageSharePayload) GetProjects() *[]string {
-	if o == nil || IsNil(o.Projects) {
-		var ret *[]string
-		return ret
-	}
-	return o.Projects
+func (o *SetImageSharePayload) GetProjects() (res SetImageSharePayloadGetProjectsRetType) {
+	res, _ = o.GetProjectsOk()
+	return
 }
 
 // GetProjectsOk returns a tuple with the Projects field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *SetImageSharePayload) GetProjectsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Projects) {
-		return nil, false
-	}
-	return o.Projects, true
+func (o *SetImageSharePayload) GetProjectsOk() (ret SetImageSharePayloadGetProjectsRetType, ok bool) {
+	return getSetImageSharePayloadGetProjectsAttributeTypeOk(o.Projects)
 }
 
 // HasProjects returns a boolean if a field has been set.
 func (o *SetImageSharePayload) HasProjects() bool {
-	if o != nil && !IsNil(o.Projects) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProjectsOk()
+	return ok
 }
 
 // SetProjects gets a reference to the given []string and assigns it to the Projects field.
-func (o *SetImageSharePayload) SetProjects(v *[]string) {
-	o.Projects = v
+func (o *SetImageSharePayload) SetProjects(v SetImageSharePayloadGetProjectsRetType) {
+	setSetImageSharePayloadGetProjectsAttributeType(&o.Projects, v)
 }
 
 func (o SetImageSharePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.ParentOrganization) {
-		toSerialize["parentOrganization"] = o.ParentOrganization
+	if val, ok := getSetImageSharePayloadgetParentOrganizationAttributeTypeOk(o.ParentOrganization); ok {
+		toSerialize["ParentOrganization"] = val
 	}
-	if !IsNil(o.Projects) {
-		toSerialize["projects"] = o.Projects
+	if val, ok := getSetImageSharePayloadGetProjectsAttributeTypeOk(o.Projects); ok {
+		toSerialize["Projects"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_snapshot.go b/services/iaas/model_snapshot.go
index 9935d7e09..086cff6ee 100644
--- a/services/iaas/model_snapshot.go
+++ b/services/iaas/model_snapshot.go
@@ -18,25 +18,189 @@ import (
 // checks if the Snapshot type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Snapshot{}
 
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type SnapshotGetCreatedAtAttributeType = *time.Time
+type SnapshotGetCreatedAtArgType = time.Time
+type SnapshotGetCreatedAtRetType = time.Time
+
+func getSnapshotGetCreatedAtAttributeTypeOk(arg SnapshotGetCreatedAtAttributeType) (ret SnapshotGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetCreatedAtAttributeType(arg *SnapshotGetCreatedAtAttributeType, val SnapshotGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type SnapshotGetIdAttributeType = *string
+
+func getSnapshotGetIdAttributeTypeOk(arg SnapshotGetIdAttributeType) (ret SnapshotGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetIdAttributeType(arg *SnapshotGetIdAttributeType, val SnapshotGetIdRetType) {
+	*arg = &val
+}
+
+type SnapshotGetIdArgType = string
+type SnapshotGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type SnapshotGetLabelsAttributeType = *map[string]interface{}
+type SnapshotGetLabelsArgType = map[string]interface{}
+type SnapshotGetLabelsRetType = map[string]interface{}
+
+func getSnapshotGetLabelsAttributeTypeOk(arg SnapshotGetLabelsAttributeType) (ret SnapshotGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetLabelsAttributeType(arg *SnapshotGetLabelsAttributeType, val SnapshotGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type SnapshotGetNameAttributeType = *string
+
+func getSnapshotGetNameAttributeTypeOk(arg SnapshotGetNameAttributeType) (ret SnapshotGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetNameAttributeType(arg *SnapshotGetNameAttributeType, val SnapshotGetNameRetType) {
+	*arg = &val
+}
+
+type SnapshotGetNameArgType = string
+type SnapshotGetNameRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type SnapshotGetSizeAttributeType = *int64
+type SnapshotGetSizeArgType = int64
+type SnapshotGetSizeRetType = int64
+
+func getSnapshotGetSizeAttributeTypeOk(arg SnapshotGetSizeAttributeType) (ret SnapshotGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetSizeAttributeType(arg *SnapshotGetSizeAttributeType, val SnapshotGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type SnapshotGetStatusAttributeType = *string
+
+func getSnapshotGetStatusAttributeTypeOk(arg SnapshotGetStatusAttributeType) (ret SnapshotGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetStatusAttributeType(arg *SnapshotGetStatusAttributeType, val SnapshotGetStatusRetType) {
+	*arg = &val
+}
+
+type SnapshotGetStatusArgType = string
+type SnapshotGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type SnapshotGetUpdatedAtAttributeType = *time.Time
+type SnapshotGetUpdatedAtArgType = time.Time
+type SnapshotGetUpdatedAtRetType = time.Time
+
+func getSnapshotGetUpdatedAtAttributeTypeOk(arg SnapshotGetUpdatedAtAttributeType) (ret SnapshotGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetUpdatedAtAttributeType(arg *SnapshotGetUpdatedAtAttributeType, val SnapshotGetUpdatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for volumeId
+*/
+
+// isNotNullableString
+type SnapshotGetVolumeIdAttributeType = *string
+
+func getSnapshotGetVolumeIdAttributeTypeOk(arg SnapshotGetVolumeIdAttributeType) (ret SnapshotGetVolumeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotGetVolumeIdAttributeType(arg *SnapshotGetVolumeIdAttributeType, val SnapshotGetVolumeIdRetType) {
+	*arg = &val
+}
+
+type SnapshotGetVolumeIdArgType = string
+type SnapshotGetVolumeIdRetType = string
+
 // Snapshot Object that represents a snapshot.
 type Snapshot struct {
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt SnapshotGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id SnapshotGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels SnapshotGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name SnapshotGetNameAttributeType `json:"name,omitempty"`
 	// Size in Gigabyte.
-	Size *int64 `json:"size,omitempty"`
+	Size SnapshotGetSizeAttributeType `json:"size,omitempty"`
 	// The status of a snapshot object. Possible values: `AVAILABLE`, `BACKING-UP`, `CREATING`, `DELETED`, `DELETING`, `ERROR`, `RESTORING`, `UNMANAGING`, `UPDATING`.
-	Status *string `json:"status,omitempty"`
+	Status SnapshotGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt SnapshotGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	VolumeId *string `json:"volumeId"`
+	VolumeId SnapshotGetVolumeIdAttributeType `json:"volumeId"`
 }
 
 type _Snapshot Snapshot
@@ -45,9 +209,9 @@ type _Snapshot Snapshot
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewSnapshot(volumeId *string) *Snapshot {
+func NewSnapshot(volumeId SnapshotGetVolumeIdArgType) *Snapshot {
 	this := Snapshot{}
-	this.VolumeId = volumeId
+	setSnapshotGetVolumeIdAttributeType(&this.VolumeId, volumeId)
 	return &this
 }
 
@@ -60,277 +224,209 @@ func NewSnapshotWithDefaults() *Snapshot {
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Snapshot) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Snapshot) GetCreatedAt() (res SnapshotGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Snapshot) GetCreatedAtOk() (ret SnapshotGetCreatedAtRetType, ok bool) {
+	return getSnapshotGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Snapshot) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Snapshot) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Snapshot) SetCreatedAt(v SnapshotGetCreatedAtRetType) {
+	setSnapshotGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *Snapshot) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *Snapshot) GetId() (res SnapshotGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *Snapshot) GetIdOk() (ret SnapshotGetIdRetType, ok bool) {
+	return getSnapshotGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *Snapshot) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *Snapshot) SetId(v *string) {
-	o.Id = v
+func (o *Snapshot) SetId(v SnapshotGetIdRetType) {
+	setSnapshotGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Snapshot) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Snapshot) GetLabels() (res SnapshotGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Snapshot) GetLabelsOk() (ret SnapshotGetLabelsRetType, ok bool) {
+	return getSnapshotGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Snapshot) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Snapshot) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Snapshot) SetLabels(v SnapshotGetLabelsRetType) {
+	setSnapshotGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *Snapshot) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *Snapshot) GetName() (res SnapshotGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Snapshot) GetNameOk() (ret SnapshotGetNameRetType, ok bool) {
+	return getSnapshotGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *Snapshot) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *Snapshot) SetName(v *string) {
-	o.Name = v
+func (o *Snapshot) SetName(v SnapshotGetNameRetType) {
+	setSnapshotGetNameAttributeType(&o.Name, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *Snapshot) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *Snapshot) GetSize() (res SnapshotGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *Snapshot) GetSizeOk() (ret SnapshotGetSizeRetType, ok bool) {
+	return getSnapshotGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *Snapshot) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *Snapshot) SetSize(v *int64) {
-	o.Size = v
+func (o *Snapshot) SetSize(v SnapshotGetSizeRetType) {
+	setSnapshotGetSizeAttributeType(&o.Size, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *Snapshot) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *Snapshot) GetStatus() (res SnapshotGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *Snapshot) GetStatusOk() (ret SnapshotGetStatusRetType, ok bool) {
+	return getSnapshotGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *Snapshot) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *Snapshot) SetStatus(v *string) {
-	o.Status = v
+func (o *Snapshot) SetStatus(v SnapshotGetStatusRetType) {
+	setSnapshotGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Snapshot) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Snapshot) GetUpdatedAt() (res SnapshotGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Snapshot) GetUpdatedAtOk() (ret SnapshotGetUpdatedAtRetType, ok bool) {
+	return getSnapshotGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Snapshot) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Snapshot) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Snapshot) SetUpdatedAt(v SnapshotGetUpdatedAtRetType) {
+	setSnapshotGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 // GetVolumeId returns the VolumeId field value
-func (o *Snapshot) GetVolumeId() *string {
-	if o == nil || IsNil(o.VolumeId) {
-		var ret *string
-		return ret
-	}
-
-	return o.VolumeId
+func (o *Snapshot) GetVolumeId() (ret SnapshotGetVolumeIdRetType) {
+	ret, _ = o.GetVolumeIdOk()
+	return ret
 }
 
 // GetVolumeIdOk returns a tuple with the VolumeId field value
 // and a boolean to check if the value has been set.
-func (o *Snapshot) GetVolumeIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.VolumeId, true
+func (o *Snapshot) GetVolumeIdOk() (ret SnapshotGetVolumeIdRetType, ok bool) {
+	return getSnapshotGetVolumeIdAttributeTypeOk(o.VolumeId)
 }
 
 // SetVolumeId sets field value
-func (o *Snapshot) SetVolumeId(v *string) {
-	o.VolumeId = v
+func (o *Snapshot) SetVolumeId(v SnapshotGetVolumeIdRetType) {
+	setSnapshotGetVolumeIdAttributeType(&o.VolumeId, v)
 }
 
 func (o Snapshot) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getSnapshotGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
+	}
+	if val, ok := getSnapshotGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getSnapshotGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getSnapshotGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getSnapshotGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getSnapshotGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getSnapshotGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getSnapshotGetVolumeIdAttributeTypeOk(o.VolumeId); ok {
+		toSerialize["VolumeId"] = val
 	}
-	toSerialize["volumeId"] = o.VolumeId
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_snapshot_list_response.go b/services/iaas/model_snapshot_list_response.go
index 2d6b3d445..05281a542 100644
--- a/services/iaas/model_snapshot_list_response.go
+++ b/services/iaas/model_snapshot_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the SnapshotListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &SnapshotListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type SnapshotListResponseGetItemsAttributeType = *[]Snapshot
+type SnapshotListResponseGetItemsArgType = []Snapshot
+type SnapshotListResponseGetItemsRetType = []Snapshot
+
+func getSnapshotListResponseGetItemsAttributeTypeOk(arg SnapshotListResponseGetItemsAttributeType) (ret SnapshotListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setSnapshotListResponseGetItemsAttributeType(arg *SnapshotListResponseGetItemsAttributeType, val SnapshotListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // SnapshotListResponse Snapshot list response.
 type SnapshotListResponse struct {
 	// A list containing snapshot objects.
 	// REQUIRED
-	Items *[]Snapshot `json:"items"`
+	Items SnapshotListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _SnapshotListResponse SnapshotListResponse
@@ -30,9 +50,9 @@ type _SnapshotListResponse SnapshotListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewSnapshotListResponse(items *[]Snapshot) *SnapshotListResponse {
+func NewSnapshotListResponse(items SnapshotListResponseGetItemsArgType) *SnapshotListResponse {
 	this := SnapshotListResponse{}
-	this.Items = items
+	setSnapshotListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewSnapshotListResponseWithDefaults() *SnapshotListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *SnapshotListResponse) GetItems() *[]Snapshot {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Snapshot
-		return ret
-	}
-
-	return o.Items
+func (o *SnapshotListResponse) GetItems() (ret SnapshotListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *SnapshotListResponse) GetItemsOk() (*[]Snapshot, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *SnapshotListResponse) GetItemsOk() (ret SnapshotListResponseGetItemsRetType, ok bool) {
+	return getSnapshotListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *SnapshotListResponse) SetItems(v *[]Snapshot) {
-	o.Items = v
+func (o *SnapshotListResponse) SetItems(v SnapshotListResponseGetItemsRetType) {
+	setSnapshotListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o SnapshotListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getSnapshotListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_update_area_address_family.go b/services/iaas/model_update_area_address_family.go
index ca1cf7314..30c26928d 100644
--- a/services/iaas/model_update_area_address_family.go
+++ b/services/iaas/model_update_area_address_family.go
@@ -17,9 +17,29 @@ import (
 // checks if the UpdateAreaAddressFamily type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateAreaAddressFamily{}
 
+/*
+	types and functions for ipv4
+*/
+
+// isModel
+type UpdateAreaAddressFamilyGetIpv4AttributeType = *UpdateAreaIPv4
+type UpdateAreaAddressFamilyGetIpv4ArgType = UpdateAreaIPv4
+type UpdateAreaAddressFamilyGetIpv4RetType = UpdateAreaIPv4
+
+func getUpdateAreaAddressFamilyGetIpv4AttributeTypeOk(arg UpdateAreaAddressFamilyGetIpv4AttributeType) (ret UpdateAreaAddressFamilyGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAreaAddressFamilyGetIpv4AttributeType(arg *UpdateAreaAddressFamilyGetIpv4AttributeType, val UpdateAreaAddressFamilyGetIpv4RetType) {
+	*arg = &val
+}
+
 // UpdateAreaAddressFamily The addressFamily object for a area update request.
 type UpdateAreaAddressFamily struct {
-	Ipv4 *UpdateAreaIPv4 `json:"ipv4,omitempty"`
+	Ipv4 UpdateAreaAddressFamilyGetIpv4AttributeType `json:"ipv4,omitempty"`
 }
 
 // NewUpdateAreaAddressFamily instantiates a new UpdateAreaAddressFamily object
@@ -40,41 +60,32 @@ func NewUpdateAreaAddressFamilyWithDefaults() *UpdateAreaAddressFamily {
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *UpdateAreaAddressFamily) GetIpv4() *UpdateAreaIPv4 {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *UpdateAreaIPv4
-		return ret
-	}
-	return o.Ipv4
+func (o *UpdateAreaAddressFamily) GetIpv4() (res UpdateAreaAddressFamilyGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAreaAddressFamily) GetIpv4Ok() (*UpdateAreaIPv4, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *UpdateAreaAddressFamily) GetIpv4Ok() (ret UpdateAreaAddressFamilyGetIpv4RetType, ok bool) {
+	return getUpdateAreaAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *UpdateAreaAddressFamily) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given UpdateAreaIPv4 and assigns it to the Ipv4 field.
-func (o *UpdateAreaAddressFamily) SetIpv4(v *UpdateAreaIPv4) {
-	o.Ipv4 = v
+func (o *UpdateAreaAddressFamily) SetIpv4(v UpdateAreaAddressFamilyGetIpv4RetType) {
+	setUpdateAreaAddressFamilyGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 func (o UpdateAreaAddressFamily) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getUpdateAreaAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_area_ipv4.go b/services/iaas/model_update_area_ipv4.go
index 2bb172fe1..c458d2703 100644
--- a/services/iaas/model_update_area_ipv4.go
+++ b/services/iaas/model_update_area_ipv4.go
@@ -17,15 +17,95 @@ import (
 // checks if the UpdateAreaIPv4 type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateAreaIPv4{}
 
+/*
+	types and functions for defaultNameservers
+*/
+
+// isArray
+type UpdateAreaIPv4GetDefaultNameserversAttributeType = *[]string
+type UpdateAreaIPv4GetDefaultNameserversArgType = []string
+type UpdateAreaIPv4GetDefaultNameserversRetType = []string
+
+func getUpdateAreaIPv4GetDefaultNameserversAttributeTypeOk(arg UpdateAreaIPv4GetDefaultNameserversAttributeType) (ret UpdateAreaIPv4GetDefaultNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAreaIPv4GetDefaultNameserversAttributeType(arg *UpdateAreaIPv4GetDefaultNameserversAttributeType, val UpdateAreaIPv4GetDefaultNameserversRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for defaultPrefixLen
+*/
+
+// isInteger
+type UpdateAreaIPv4GetDefaultPrefixLenAttributeType = *int64
+type UpdateAreaIPv4GetDefaultPrefixLenArgType = int64
+type UpdateAreaIPv4GetDefaultPrefixLenRetType = int64
+
+func getUpdateAreaIPv4GetDefaultPrefixLenAttributeTypeOk(arg UpdateAreaIPv4GetDefaultPrefixLenAttributeType) (ret UpdateAreaIPv4GetDefaultPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAreaIPv4GetDefaultPrefixLenAttributeType(arg *UpdateAreaIPv4GetDefaultPrefixLenAttributeType, val UpdateAreaIPv4GetDefaultPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for maxPrefixLen
+*/
+
+// isInteger
+type UpdateAreaIPv4GetMaxPrefixLenAttributeType = *int64
+type UpdateAreaIPv4GetMaxPrefixLenArgType = int64
+type UpdateAreaIPv4GetMaxPrefixLenRetType = int64
+
+func getUpdateAreaIPv4GetMaxPrefixLenAttributeTypeOk(arg UpdateAreaIPv4GetMaxPrefixLenAttributeType) (ret UpdateAreaIPv4GetMaxPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAreaIPv4GetMaxPrefixLenAttributeType(arg *UpdateAreaIPv4GetMaxPrefixLenAttributeType, val UpdateAreaIPv4GetMaxPrefixLenRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minPrefixLen
+*/
+
+// isInteger
+type UpdateAreaIPv4GetMinPrefixLenAttributeType = *int64
+type UpdateAreaIPv4GetMinPrefixLenArgType = int64
+type UpdateAreaIPv4GetMinPrefixLenRetType = int64
+
+func getUpdateAreaIPv4GetMinPrefixLenAttributeTypeOk(arg UpdateAreaIPv4GetMinPrefixLenAttributeType) (ret UpdateAreaIPv4GetMinPrefixLenRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAreaIPv4GetMinPrefixLenAttributeType(arg *UpdateAreaIPv4GetMinPrefixLenAttributeType, val UpdateAreaIPv4GetMinPrefixLenRetType) {
+	*arg = &val
+}
+
 // UpdateAreaIPv4 The update object for a IPv4 network area.
 type UpdateAreaIPv4 struct {
-	DefaultNameservers *[]string `json:"defaultNameservers,omitempty"`
+	DefaultNameservers UpdateAreaIPv4GetDefaultNameserversAttributeType `json:"defaultNameservers,omitempty"`
 	// The default prefix length for networks in the network area.
-	DefaultPrefixLen *int64 `json:"defaultPrefixLen,omitempty"`
+	DefaultPrefixLen UpdateAreaIPv4GetDefaultPrefixLenAttributeType `json:"defaultPrefixLen,omitempty"`
 	// The maximal prefix length for networks in the network area.
-	MaxPrefixLen *int64 `json:"maxPrefixLen,omitempty"`
+	MaxPrefixLen UpdateAreaIPv4GetMaxPrefixLenAttributeType `json:"maxPrefixLen,omitempty"`
 	// The minimal prefix length for networks in the network area.
-	MinPrefixLen *int64 `json:"minPrefixLen,omitempty"`
+	MinPrefixLen UpdateAreaIPv4GetMinPrefixLenAttributeType `json:"minPrefixLen,omitempty"`
 }
 
 // NewUpdateAreaIPv4 instantiates a new UpdateAreaIPv4 object
@@ -46,146 +126,110 @@ func NewUpdateAreaIPv4WithDefaults() *UpdateAreaIPv4 {
 }
 
 // GetDefaultNameservers returns the DefaultNameservers field value if set, zero value otherwise.
-func (o *UpdateAreaIPv4) GetDefaultNameservers() *[]string {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.DefaultNameservers
+func (o *UpdateAreaIPv4) GetDefaultNameservers() (res UpdateAreaIPv4GetDefaultNameserversRetType) {
+	res, _ = o.GetDefaultNameserversOk()
+	return
 }
 
 // GetDefaultNameserversOk returns a tuple with the DefaultNameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAreaIPv4) GetDefaultNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.DefaultNameservers) {
-		return nil, false
-	}
-	return o.DefaultNameservers, true
+func (o *UpdateAreaIPv4) GetDefaultNameserversOk() (ret UpdateAreaIPv4GetDefaultNameserversRetType, ok bool) {
+	return getUpdateAreaIPv4GetDefaultNameserversAttributeTypeOk(o.DefaultNameservers)
 }
 
 // HasDefaultNameservers returns a boolean if a field has been set.
 func (o *UpdateAreaIPv4) HasDefaultNameservers() bool {
-	if o != nil && !IsNil(o.DefaultNameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultNameserversOk()
+	return ok
 }
 
 // SetDefaultNameservers gets a reference to the given []string and assigns it to the DefaultNameservers field.
-func (o *UpdateAreaIPv4) SetDefaultNameservers(v *[]string) {
-	o.DefaultNameservers = v
+func (o *UpdateAreaIPv4) SetDefaultNameservers(v UpdateAreaIPv4GetDefaultNameserversRetType) {
+	setUpdateAreaIPv4GetDefaultNameserversAttributeType(&o.DefaultNameservers, v)
 }
 
 // GetDefaultPrefixLen returns the DefaultPrefixLen field value if set, zero value otherwise.
-func (o *UpdateAreaIPv4) GetDefaultPrefixLen() *int64 {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.DefaultPrefixLen
+func (o *UpdateAreaIPv4) GetDefaultPrefixLen() (res UpdateAreaIPv4GetDefaultPrefixLenRetType) {
+	res, _ = o.GetDefaultPrefixLenOk()
+	return
 }
 
 // GetDefaultPrefixLenOk returns a tuple with the DefaultPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAreaIPv4) GetDefaultPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.DefaultPrefixLen) {
-		return nil, false
-	}
-	return o.DefaultPrefixLen, true
+func (o *UpdateAreaIPv4) GetDefaultPrefixLenOk() (ret UpdateAreaIPv4GetDefaultPrefixLenRetType, ok bool) {
+	return getUpdateAreaIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen)
 }
 
 // HasDefaultPrefixLen returns a boolean if a field has been set.
 func (o *UpdateAreaIPv4) HasDefaultPrefixLen() bool {
-	if o != nil && !IsNil(o.DefaultPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDefaultPrefixLenOk()
+	return ok
 }
 
 // SetDefaultPrefixLen gets a reference to the given int64 and assigns it to the DefaultPrefixLen field.
-func (o *UpdateAreaIPv4) SetDefaultPrefixLen(v *int64) {
-	o.DefaultPrefixLen = v
+func (o *UpdateAreaIPv4) SetDefaultPrefixLen(v UpdateAreaIPv4GetDefaultPrefixLenRetType) {
+	setUpdateAreaIPv4GetDefaultPrefixLenAttributeType(&o.DefaultPrefixLen, v)
 }
 
 // GetMaxPrefixLen returns the MaxPrefixLen field value if set, zero value otherwise.
-func (o *UpdateAreaIPv4) GetMaxPrefixLen() *int64 {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MaxPrefixLen
+func (o *UpdateAreaIPv4) GetMaxPrefixLen() (res UpdateAreaIPv4GetMaxPrefixLenRetType) {
+	res, _ = o.GetMaxPrefixLenOk()
+	return
 }
 
 // GetMaxPrefixLenOk returns a tuple with the MaxPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAreaIPv4) GetMaxPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MaxPrefixLen) {
-		return nil, false
-	}
-	return o.MaxPrefixLen, true
+func (o *UpdateAreaIPv4) GetMaxPrefixLenOk() (ret UpdateAreaIPv4GetMaxPrefixLenRetType, ok bool) {
+	return getUpdateAreaIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen)
 }
 
 // HasMaxPrefixLen returns a boolean if a field has been set.
 func (o *UpdateAreaIPv4) HasMaxPrefixLen() bool {
-	if o != nil && !IsNil(o.MaxPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMaxPrefixLenOk()
+	return ok
 }
 
 // SetMaxPrefixLen gets a reference to the given int64 and assigns it to the MaxPrefixLen field.
-func (o *UpdateAreaIPv4) SetMaxPrefixLen(v *int64) {
-	o.MaxPrefixLen = v
+func (o *UpdateAreaIPv4) SetMaxPrefixLen(v UpdateAreaIPv4GetMaxPrefixLenRetType) {
+	setUpdateAreaIPv4GetMaxPrefixLenAttributeType(&o.MaxPrefixLen, v)
 }
 
 // GetMinPrefixLen returns the MinPrefixLen field value if set, zero value otherwise.
-func (o *UpdateAreaIPv4) GetMinPrefixLen() *int64 {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		var ret *int64
-		return ret
-	}
-	return o.MinPrefixLen
+func (o *UpdateAreaIPv4) GetMinPrefixLen() (res UpdateAreaIPv4GetMinPrefixLenRetType) {
+	res, _ = o.GetMinPrefixLenOk()
+	return
 }
 
 // GetMinPrefixLenOk returns a tuple with the MinPrefixLen field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAreaIPv4) GetMinPrefixLenOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinPrefixLen) {
-		return nil, false
-	}
-	return o.MinPrefixLen, true
+func (o *UpdateAreaIPv4) GetMinPrefixLenOk() (ret UpdateAreaIPv4GetMinPrefixLenRetType, ok bool) {
+	return getUpdateAreaIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen)
 }
 
 // HasMinPrefixLen returns a boolean if a field has been set.
 func (o *UpdateAreaIPv4) HasMinPrefixLen() bool {
-	if o != nil && !IsNil(o.MinPrefixLen) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinPrefixLenOk()
+	return ok
 }
 
 // SetMinPrefixLen gets a reference to the given int64 and assigns it to the MinPrefixLen field.
-func (o *UpdateAreaIPv4) SetMinPrefixLen(v *int64) {
-	o.MinPrefixLen = v
+func (o *UpdateAreaIPv4) SetMinPrefixLen(v UpdateAreaIPv4GetMinPrefixLenRetType) {
+	setUpdateAreaIPv4GetMinPrefixLenAttributeType(&o.MinPrefixLen, v)
 }
 
 func (o UpdateAreaIPv4) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DefaultNameservers) {
-		toSerialize["defaultNameservers"] = o.DefaultNameservers
+	if val, ok := getUpdateAreaIPv4GetDefaultNameserversAttributeTypeOk(o.DefaultNameservers); ok {
+		toSerialize["DefaultNameservers"] = val
 	}
-	if !IsNil(o.DefaultPrefixLen) {
-		toSerialize["defaultPrefixLen"] = o.DefaultPrefixLen
+	if val, ok := getUpdateAreaIPv4GetDefaultPrefixLenAttributeTypeOk(o.DefaultPrefixLen); ok {
+		toSerialize["DefaultPrefixLen"] = val
 	}
-	if !IsNil(o.MaxPrefixLen) {
-		toSerialize["maxPrefixLen"] = o.MaxPrefixLen
+	if val, ok := getUpdateAreaIPv4GetMaxPrefixLenAttributeTypeOk(o.MaxPrefixLen); ok {
+		toSerialize["MaxPrefixLen"] = val
 	}
-	if !IsNil(o.MinPrefixLen) {
-		toSerialize["minPrefixLen"] = o.MinPrefixLen
+	if val, ok := getUpdateAreaIPv4GetMinPrefixLenAttributeTypeOk(o.MinPrefixLen); ok {
+		toSerialize["MinPrefixLen"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_attached_volume_payload.go b/services/iaas/model_update_attached_volume_payload.go
index 1357e3324..ca0117ae5 100644
--- a/services/iaas/model_update_attached_volume_payload.go
+++ b/services/iaas/model_update_attached_volume_payload.go
@@ -17,14 +17,76 @@ import (
 // checks if the UpdateAttachedVolumePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateAttachedVolumePayload{}
 
+/*
+	types and functions for deleteOnTermination
+*/
+
+// isBoolean
+type UpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeType = *bool
+type UpdateAttachedVolumePayloadgetDeleteOnTerminationArgType = bool
+type UpdateAttachedVolumePayloadgetDeleteOnTerminationRetType = bool
+
+func getUpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeTypeOk(arg UpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeType) (ret UpdateAttachedVolumePayloadgetDeleteOnTerminationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeType(arg *UpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeType, val UpdateAttachedVolumePayloadgetDeleteOnTerminationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for serverId
+*/
+
+// isNotNullableString
+type UpdateAttachedVolumePayloadGetServerIdAttributeType = *string
+
+func getUpdateAttachedVolumePayloadGetServerIdAttributeTypeOk(arg UpdateAttachedVolumePayloadGetServerIdAttributeType) (ret UpdateAttachedVolumePayloadGetServerIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAttachedVolumePayloadGetServerIdAttributeType(arg *UpdateAttachedVolumePayloadGetServerIdAttributeType, val UpdateAttachedVolumePayloadGetServerIdRetType) {
+	*arg = &val
+}
+
+type UpdateAttachedVolumePayloadGetServerIdArgType = string
+type UpdateAttachedVolumePayloadGetServerIdRetType = string
+
+/*
+	types and functions for volumeId
+*/
+
+// isNotNullableString
+type UpdateAttachedVolumePayloadGetVolumeIdAttributeType = *string
+
+func getUpdateAttachedVolumePayloadGetVolumeIdAttributeTypeOk(arg UpdateAttachedVolumePayloadGetVolumeIdAttributeType) (ret UpdateAttachedVolumePayloadGetVolumeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateAttachedVolumePayloadGetVolumeIdAttributeType(arg *UpdateAttachedVolumePayloadGetVolumeIdAttributeType, val UpdateAttachedVolumePayloadGetVolumeIdRetType) {
+	*arg = &val
+}
+
+type UpdateAttachedVolumePayloadGetVolumeIdArgType = string
+type UpdateAttachedVolumePayloadGetVolumeIdRetType = string
+
 // UpdateAttachedVolumePayload Object that represents a Volume attachment to a server.
 type UpdateAttachedVolumePayload struct {
 	// Delete the volume during the termination of the server. Defaults to false.
-	DeleteOnTermination *bool `json:"deleteOnTermination,omitempty"`
+	DeleteOnTermination UpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeType `json:"deleteOnTermination,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ServerId *string `json:"serverId,omitempty"`
+	ServerId UpdateAttachedVolumePayloadGetServerIdAttributeType `json:"serverId,omitempty"`
 	// Universally Unique Identifier (UUID).
-	VolumeId *string `json:"volumeId,omitempty"`
+	VolumeId UpdateAttachedVolumePayloadGetVolumeIdAttributeType `json:"volumeId,omitempty"`
 }
 
 // NewUpdateAttachedVolumePayload instantiates a new UpdateAttachedVolumePayload object
@@ -45,111 +107,84 @@ func NewUpdateAttachedVolumePayloadWithDefaults() *UpdateAttachedVolumePayload {
 }
 
 // GetDeleteOnTermination returns the DeleteOnTermination field value if set, zero value otherwise.
-func (o *UpdateAttachedVolumePayload) GetDeleteOnTermination() *bool {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		var ret *bool
-		return ret
-	}
-	return o.DeleteOnTermination
+func (o *UpdateAttachedVolumePayload) GetDeleteOnTermination() (res UpdateAttachedVolumePayloadgetDeleteOnTerminationRetType) {
+	res, _ = o.GetDeleteOnTerminationOk()
+	return
 }
 
 // GetDeleteOnTerminationOk returns a tuple with the DeleteOnTermination field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAttachedVolumePayload) GetDeleteOnTerminationOk() (*bool, bool) {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		return nil, false
-	}
-	return o.DeleteOnTermination, true
+func (o *UpdateAttachedVolumePayload) GetDeleteOnTerminationOk() (ret UpdateAttachedVolumePayloadgetDeleteOnTerminationRetType, ok bool) {
+	return getUpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination)
 }
 
 // HasDeleteOnTermination returns a boolean if a field has been set.
 func (o *UpdateAttachedVolumePayload) HasDeleteOnTermination() bool {
-	if o != nil && !IsNil(o.DeleteOnTermination) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDeleteOnTerminationOk()
+	return ok
 }
 
 // SetDeleteOnTermination gets a reference to the given bool and assigns it to the DeleteOnTermination field.
-func (o *UpdateAttachedVolumePayload) SetDeleteOnTermination(v *bool) {
-	o.DeleteOnTermination = v
+func (o *UpdateAttachedVolumePayload) SetDeleteOnTermination(v UpdateAttachedVolumePayloadgetDeleteOnTerminationRetType) {
+	setUpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeType(&o.DeleteOnTermination, v)
 }
 
 // GetServerId returns the ServerId field value if set, zero value otherwise.
-func (o *UpdateAttachedVolumePayload) GetServerId() *string {
-	if o == nil || IsNil(o.ServerId) {
-		var ret *string
-		return ret
-	}
-	return o.ServerId
+func (o *UpdateAttachedVolumePayload) GetServerId() (res UpdateAttachedVolumePayloadGetServerIdRetType) {
+	res, _ = o.GetServerIdOk()
+	return
 }
 
 // GetServerIdOk returns a tuple with the ServerId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAttachedVolumePayload) GetServerIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ServerId) {
-		return nil, false
-	}
-	return o.ServerId, true
+func (o *UpdateAttachedVolumePayload) GetServerIdOk() (ret UpdateAttachedVolumePayloadGetServerIdRetType, ok bool) {
+	return getUpdateAttachedVolumePayloadGetServerIdAttributeTypeOk(o.ServerId)
 }
 
 // HasServerId returns a boolean if a field has been set.
 func (o *UpdateAttachedVolumePayload) HasServerId() bool {
-	if o != nil && !IsNil(o.ServerId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetServerIdOk()
+	return ok
 }
 
 // SetServerId gets a reference to the given string and assigns it to the ServerId field.
-func (o *UpdateAttachedVolumePayload) SetServerId(v *string) {
-	o.ServerId = v
+func (o *UpdateAttachedVolumePayload) SetServerId(v UpdateAttachedVolumePayloadGetServerIdRetType) {
+	setUpdateAttachedVolumePayloadGetServerIdAttributeType(&o.ServerId, v)
 }
 
 // GetVolumeId returns the VolumeId field value if set, zero value otherwise.
-func (o *UpdateAttachedVolumePayload) GetVolumeId() *string {
-	if o == nil || IsNil(o.VolumeId) {
-		var ret *string
-		return ret
-	}
-	return o.VolumeId
+func (o *UpdateAttachedVolumePayload) GetVolumeId() (res UpdateAttachedVolumePayloadGetVolumeIdRetType) {
+	res, _ = o.GetVolumeIdOk()
+	return
 }
 
 // GetVolumeIdOk returns a tuple with the VolumeId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateAttachedVolumePayload) GetVolumeIdOk() (*string, bool) {
-	if o == nil || IsNil(o.VolumeId) {
-		return nil, false
-	}
-	return o.VolumeId, true
+func (o *UpdateAttachedVolumePayload) GetVolumeIdOk() (ret UpdateAttachedVolumePayloadGetVolumeIdRetType, ok bool) {
+	return getUpdateAttachedVolumePayloadGetVolumeIdAttributeTypeOk(o.VolumeId)
 }
 
 // HasVolumeId returns a boolean if a field has been set.
 func (o *UpdateAttachedVolumePayload) HasVolumeId() bool {
-	if o != nil && !IsNil(o.VolumeId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVolumeIdOk()
+	return ok
 }
 
 // SetVolumeId gets a reference to the given string and assigns it to the VolumeId field.
-func (o *UpdateAttachedVolumePayload) SetVolumeId(v *string) {
-	o.VolumeId = v
+func (o *UpdateAttachedVolumePayload) SetVolumeId(v UpdateAttachedVolumePayloadGetVolumeIdRetType) {
+	setUpdateAttachedVolumePayloadGetVolumeIdAttributeType(&o.VolumeId, v)
 }
 
 func (o UpdateAttachedVolumePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DeleteOnTermination) {
-		toSerialize["deleteOnTermination"] = o.DeleteOnTermination
+	if val, ok := getUpdateAttachedVolumePayloadgetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination); ok {
+		toSerialize["DeleteOnTermination"] = val
 	}
-	if !IsNil(o.ServerId) {
-		toSerialize["serverId"] = o.ServerId
+	if val, ok := getUpdateAttachedVolumePayloadGetServerIdAttributeTypeOk(o.ServerId); ok {
+		toSerialize["ServerId"] = val
 	}
-	if !IsNil(o.VolumeId) {
-		toSerialize["volumeId"] = o.VolumeId
+	if val, ok := getUpdateAttachedVolumePayloadGetVolumeIdAttributeTypeOk(o.VolumeId); ok {
+		toSerialize["VolumeId"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_backup_payload.go b/services/iaas/model_update_backup_payload.go
index 41bd159de..cbd6266bf 100644
--- a/services/iaas/model_update_backup_payload.go
+++ b/services/iaas/model_update_backup_payload.go
@@ -18,28 +18,234 @@ import (
 // checks if the UpdateBackupPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateBackupPayload{}
 
+/*
+	types and functions for availabilityZone
+*/
+
+// isNotNullableString
+type UpdateBackupPayloadGetAvailabilityZoneAttributeType = *string
+
+func getUpdateBackupPayloadGetAvailabilityZoneAttributeTypeOk(arg UpdateBackupPayloadGetAvailabilityZoneAttributeType) (ret UpdateBackupPayloadGetAvailabilityZoneRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetAvailabilityZoneAttributeType(arg *UpdateBackupPayloadGetAvailabilityZoneAttributeType, val UpdateBackupPayloadGetAvailabilityZoneRetType) {
+	*arg = &val
+}
+
+type UpdateBackupPayloadGetAvailabilityZoneArgType = string
+type UpdateBackupPayloadGetAvailabilityZoneRetType = string
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type UpdateBackupPayloadGetCreatedAtAttributeType = *time.Time
+type UpdateBackupPayloadGetCreatedAtArgType = time.Time
+type UpdateBackupPayloadGetCreatedAtRetType = time.Time
+
+func getUpdateBackupPayloadGetCreatedAtAttributeTypeOk(arg UpdateBackupPayloadGetCreatedAtAttributeType) (ret UpdateBackupPayloadGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetCreatedAtAttributeType(arg *UpdateBackupPayloadGetCreatedAtAttributeType, val UpdateBackupPayloadGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type UpdateBackupPayloadGetIdAttributeType = *string
+
+func getUpdateBackupPayloadGetIdAttributeTypeOk(arg UpdateBackupPayloadGetIdAttributeType) (ret UpdateBackupPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetIdAttributeType(arg *UpdateBackupPayloadGetIdAttributeType, val UpdateBackupPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type UpdateBackupPayloadGetIdArgType = string
+type UpdateBackupPayloadGetIdRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateBackupPayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateBackupPayloadGetLabelsArgType = map[string]interface{}
+type UpdateBackupPayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateBackupPayloadGetLabelsAttributeTypeOk(arg UpdateBackupPayloadGetLabelsAttributeType) (ret UpdateBackupPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetLabelsAttributeType(arg *UpdateBackupPayloadGetLabelsAttributeType, val UpdateBackupPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type UpdateBackupPayloadGetNameAttributeType = *string
+
+func getUpdateBackupPayloadGetNameAttributeTypeOk(arg UpdateBackupPayloadGetNameAttributeType) (ret UpdateBackupPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetNameAttributeType(arg *UpdateBackupPayloadGetNameAttributeType, val UpdateBackupPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type UpdateBackupPayloadGetNameArgType = string
+type UpdateBackupPayloadGetNameRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type UpdateBackupPayloadGetSizeAttributeType = *int64
+type UpdateBackupPayloadGetSizeArgType = int64
+type UpdateBackupPayloadGetSizeRetType = int64
+
+func getUpdateBackupPayloadGetSizeAttributeTypeOk(arg UpdateBackupPayloadGetSizeAttributeType) (ret UpdateBackupPayloadGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetSizeAttributeType(arg *UpdateBackupPayloadGetSizeAttributeType, val UpdateBackupPayloadGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for snapshotId
+*/
+
+// isNotNullableString
+type UpdateBackupPayloadGetSnapshotIdAttributeType = *string
+
+func getUpdateBackupPayloadGetSnapshotIdAttributeTypeOk(arg UpdateBackupPayloadGetSnapshotIdAttributeType) (ret UpdateBackupPayloadGetSnapshotIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetSnapshotIdAttributeType(arg *UpdateBackupPayloadGetSnapshotIdAttributeType, val UpdateBackupPayloadGetSnapshotIdRetType) {
+	*arg = &val
+}
+
+type UpdateBackupPayloadGetSnapshotIdArgType = string
+type UpdateBackupPayloadGetSnapshotIdRetType = string
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type UpdateBackupPayloadGetStatusAttributeType = *string
+
+func getUpdateBackupPayloadGetStatusAttributeTypeOk(arg UpdateBackupPayloadGetStatusAttributeType) (ret UpdateBackupPayloadGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetStatusAttributeType(arg *UpdateBackupPayloadGetStatusAttributeType, val UpdateBackupPayloadGetStatusRetType) {
+	*arg = &val
+}
+
+type UpdateBackupPayloadGetStatusArgType = string
+type UpdateBackupPayloadGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type UpdateBackupPayloadGetUpdatedAtAttributeType = *time.Time
+type UpdateBackupPayloadGetUpdatedAtArgType = time.Time
+type UpdateBackupPayloadGetUpdatedAtRetType = time.Time
+
+func getUpdateBackupPayloadGetUpdatedAtAttributeTypeOk(arg UpdateBackupPayloadGetUpdatedAtAttributeType) (ret UpdateBackupPayloadGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetUpdatedAtAttributeType(arg *UpdateBackupPayloadGetUpdatedAtAttributeType, val UpdateBackupPayloadGetUpdatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for volumeId
+*/
+
+// isNotNullableString
+type UpdateBackupPayloadGetVolumeIdAttributeType = *string
+
+func getUpdateBackupPayloadGetVolumeIdAttributeTypeOk(arg UpdateBackupPayloadGetVolumeIdAttributeType) (ret UpdateBackupPayloadGetVolumeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateBackupPayloadGetVolumeIdAttributeType(arg *UpdateBackupPayloadGetVolumeIdAttributeType, val UpdateBackupPayloadGetVolumeIdRetType) {
+	*arg = &val
+}
+
+type UpdateBackupPayloadGetVolumeIdArgType = string
+type UpdateBackupPayloadGetVolumeIdRetType = string
+
 // UpdateBackupPayload Object that represents a backup.
 type UpdateBackupPayload struct {
 	// Object that represents an availability zone.
-	AvailabilityZone *string `json:"availabilityZone,omitempty"`
+	AvailabilityZone UpdateBackupPayloadGetAvailabilityZoneAttributeType `json:"availabilityZone,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt UpdateBackupPayloadGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id UpdateBackupPayloadGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateBackupPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name UpdateBackupPayloadGetNameAttributeType `json:"name,omitempty"`
 	// Size in Gigabyte.
-	Size *int64 `json:"size,omitempty"`
+	Size UpdateBackupPayloadGetSizeAttributeType `json:"size,omitempty"`
 	// Universally Unique Identifier (UUID).
-	SnapshotId *string `json:"snapshotId,omitempty"`
+	SnapshotId UpdateBackupPayloadGetSnapshotIdAttributeType `json:"snapshotId,omitempty"`
 	// The status of a backup object. Possible values: `AVAILABLE`, `CREATING`, `DELETED`, `DELETING`, `ERROR`, `RESTORING`.
-	Status *string `json:"status,omitempty"`
+	Status UpdateBackupPayloadGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt UpdateBackupPayloadGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 	// Universally Unique Identifier (UUID).
-	VolumeId *string `json:"volumeId,omitempty"`
+	VolumeId UpdateBackupPayloadGetVolumeIdAttributeType `json:"volumeId,omitempty"`
 }
 
 // NewUpdateBackupPayload instantiates a new UpdateBackupPayload object
@@ -60,356 +266,266 @@ func NewUpdateBackupPayloadWithDefaults() *UpdateBackupPayload {
 }
 
 // GetAvailabilityZone returns the AvailabilityZone field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetAvailabilityZone() *string {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		var ret *string
-		return ret
-	}
-	return o.AvailabilityZone
+func (o *UpdateBackupPayload) GetAvailabilityZone() (res UpdateBackupPayloadGetAvailabilityZoneRetType) {
+	res, _ = o.GetAvailabilityZoneOk()
+	return
 }
 
 // GetAvailabilityZoneOk returns a tuple with the AvailabilityZone field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetAvailabilityZoneOk() (*string, bool) {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		return nil, false
-	}
-	return o.AvailabilityZone, true
+func (o *UpdateBackupPayload) GetAvailabilityZoneOk() (ret UpdateBackupPayloadGetAvailabilityZoneRetType, ok bool) {
+	return getUpdateBackupPayloadGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone)
 }
 
 // HasAvailabilityZone returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasAvailabilityZone() bool {
-	if o != nil && !IsNil(o.AvailabilityZone) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAvailabilityZoneOk()
+	return ok
 }
 
 // SetAvailabilityZone gets a reference to the given string and assigns it to the AvailabilityZone field.
-func (o *UpdateBackupPayload) SetAvailabilityZone(v *string) {
-	o.AvailabilityZone = v
+func (o *UpdateBackupPayload) SetAvailabilityZone(v UpdateBackupPayloadGetAvailabilityZoneRetType) {
+	setUpdateBackupPayloadGetAvailabilityZoneAttributeType(&o.AvailabilityZone, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *UpdateBackupPayload) GetCreatedAt() (res UpdateBackupPayloadGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *UpdateBackupPayload) GetCreatedAtOk() (ret UpdateBackupPayloadGetCreatedAtRetType, ok bool) {
+	return getUpdateBackupPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *UpdateBackupPayload) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *UpdateBackupPayload) SetCreatedAt(v UpdateBackupPayloadGetCreatedAtRetType) {
+	setUpdateBackupPayloadGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *UpdateBackupPayload) GetId() (res UpdateBackupPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *UpdateBackupPayload) GetIdOk() (ret UpdateBackupPayloadGetIdRetType, ok bool) {
+	return getUpdateBackupPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *UpdateBackupPayload) SetId(v *string) {
-	o.Id = v
+func (o *UpdateBackupPayload) SetId(v UpdateBackupPayloadGetIdRetType) {
+	setUpdateBackupPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateBackupPayload) GetLabels() (res UpdateBackupPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateBackupPayload) GetLabelsOk() (ret UpdateBackupPayloadGetLabelsRetType, ok bool) {
+	return getUpdateBackupPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateBackupPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateBackupPayload) SetLabels(v UpdateBackupPayloadGetLabelsRetType) {
+	setUpdateBackupPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *UpdateBackupPayload) GetName() (res UpdateBackupPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *UpdateBackupPayload) GetNameOk() (ret UpdateBackupPayloadGetNameRetType, ok bool) {
+	return getUpdateBackupPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *UpdateBackupPayload) SetName(v *string) {
-	o.Name = v
+func (o *UpdateBackupPayload) SetName(v UpdateBackupPayloadGetNameRetType) {
+	setUpdateBackupPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *UpdateBackupPayload) GetSize() (res UpdateBackupPayloadGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *UpdateBackupPayload) GetSizeOk() (ret UpdateBackupPayloadGetSizeRetType, ok bool) {
+	return getUpdateBackupPayloadGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *UpdateBackupPayload) SetSize(v *int64) {
-	o.Size = v
+func (o *UpdateBackupPayload) SetSize(v UpdateBackupPayloadGetSizeRetType) {
+	setUpdateBackupPayloadGetSizeAttributeType(&o.Size, v)
 }
 
 // GetSnapshotId returns the SnapshotId field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetSnapshotId() *string {
-	if o == nil || IsNil(o.SnapshotId) {
-		var ret *string
-		return ret
-	}
-	return o.SnapshotId
+func (o *UpdateBackupPayload) GetSnapshotId() (res UpdateBackupPayloadGetSnapshotIdRetType) {
+	res, _ = o.GetSnapshotIdOk()
+	return
 }
 
 // GetSnapshotIdOk returns a tuple with the SnapshotId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetSnapshotIdOk() (*string, bool) {
-	if o == nil || IsNil(o.SnapshotId) {
-		return nil, false
-	}
-	return o.SnapshotId, true
+func (o *UpdateBackupPayload) GetSnapshotIdOk() (ret UpdateBackupPayloadGetSnapshotIdRetType, ok bool) {
+	return getUpdateBackupPayloadGetSnapshotIdAttributeTypeOk(o.SnapshotId)
 }
 
 // HasSnapshotId returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasSnapshotId() bool {
-	if o != nil && !IsNil(o.SnapshotId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSnapshotIdOk()
+	return ok
 }
 
 // SetSnapshotId gets a reference to the given string and assigns it to the SnapshotId field.
-func (o *UpdateBackupPayload) SetSnapshotId(v *string) {
-	o.SnapshotId = v
+func (o *UpdateBackupPayload) SetSnapshotId(v UpdateBackupPayloadGetSnapshotIdRetType) {
+	setUpdateBackupPayloadGetSnapshotIdAttributeType(&o.SnapshotId, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *UpdateBackupPayload) GetStatus() (res UpdateBackupPayloadGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *UpdateBackupPayload) GetStatusOk() (ret UpdateBackupPayloadGetStatusRetType, ok bool) {
+	return getUpdateBackupPayloadGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *UpdateBackupPayload) SetStatus(v *string) {
-	o.Status = v
+func (o *UpdateBackupPayload) SetStatus(v UpdateBackupPayloadGetStatusRetType) {
+	setUpdateBackupPayloadGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *UpdateBackupPayload) GetUpdatedAt() (res UpdateBackupPayloadGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *UpdateBackupPayload) GetUpdatedAtOk() (ret UpdateBackupPayloadGetUpdatedAtRetType, ok bool) {
+	return getUpdateBackupPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *UpdateBackupPayload) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *UpdateBackupPayload) SetUpdatedAt(v UpdateBackupPayloadGetUpdatedAtRetType) {
+	setUpdateBackupPayloadGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 // GetVolumeId returns the VolumeId field value if set, zero value otherwise.
-func (o *UpdateBackupPayload) GetVolumeId() *string {
-	if o == nil || IsNil(o.VolumeId) {
-		var ret *string
-		return ret
-	}
-	return o.VolumeId
+func (o *UpdateBackupPayload) GetVolumeId() (res UpdateBackupPayloadGetVolumeIdRetType) {
+	res, _ = o.GetVolumeIdOk()
+	return
 }
 
 // GetVolumeIdOk returns a tuple with the VolumeId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateBackupPayload) GetVolumeIdOk() (*string, bool) {
-	if o == nil || IsNil(o.VolumeId) {
-		return nil, false
-	}
-	return o.VolumeId, true
+func (o *UpdateBackupPayload) GetVolumeIdOk() (ret UpdateBackupPayloadGetVolumeIdRetType, ok bool) {
+	return getUpdateBackupPayloadGetVolumeIdAttributeTypeOk(o.VolumeId)
 }
 
 // HasVolumeId returns a boolean if a field has been set.
 func (o *UpdateBackupPayload) HasVolumeId() bool {
-	if o != nil && !IsNil(o.VolumeId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVolumeIdOk()
+	return ok
 }
 
 // SetVolumeId gets a reference to the given string and assigns it to the VolumeId field.
-func (o *UpdateBackupPayload) SetVolumeId(v *string) {
-	o.VolumeId = v
+func (o *UpdateBackupPayload) SetVolumeId(v UpdateBackupPayloadGetVolumeIdRetType) {
+	setUpdateBackupPayloadGetVolumeIdAttributeType(&o.VolumeId, v)
 }
 
 func (o UpdateBackupPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AvailabilityZone) {
-		toSerialize["availabilityZone"] = o.AvailabilityZone
+	if val, ok := getUpdateBackupPayloadGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone); ok {
+		toSerialize["AvailabilityZone"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getUpdateBackupPayloadGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getUpdateBackupPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateBackupPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getUpdateBackupPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getUpdateBackupPayloadGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.SnapshotId) {
-		toSerialize["snapshotId"] = o.SnapshotId
+	if val, ok := getUpdateBackupPayloadGetSnapshotIdAttributeTypeOk(o.SnapshotId); ok {
+		toSerialize["SnapshotId"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getUpdateBackupPayloadGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getUpdateBackupPayloadGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
-	if !IsNil(o.VolumeId) {
-		toSerialize["volumeId"] = o.VolumeId
+	if val, ok := getUpdateBackupPayloadGetVolumeIdAttributeTypeOk(o.VolumeId); ok {
+		toSerialize["VolumeId"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_image_payload.go b/services/iaas/model_update_image_payload.go
index 5e622ae6a..c93be5686 100644
--- a/services/iaas/model_update_image_payload.go
+++ b/services/iaas/model_update_image_payload.go
@@ -17,20 +17,162 @@ import (
 // checks if the UpdateImagePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateImagePayload{}
 
+/*
+	types and functions for config
+*/
+
+// isModel
+type UpdateImagePayloadGetConfigAttributeType = *ImageConfig
+type UpdateImagePayloadGetConfigArgType = ImageConfig
+type UpdateImagePayloadGetConfigRetType = ImageConfig
+
+func getUpdateImagePayloadGetConfigAttributeTypeOk(arg UpdateImagePayloadGetConfigAttributeType) (ret UpdateImagePayloadGetConfigRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImagePayloadGetConfigAttributeType(arg *UpdateImagePayloadGetConfigAttributeType, val UpdateImagePayloadGetConfigRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for diskFormat
+*/
+
+// isNotNullableString
+type UpdateImagePayloadGetDiskFormatAttributeType = *string
+
+func getUpdateImagePayloadGetDiskFormatAttributeTypeOk(arg UpdateImagePayloadGetDiskFormatAttributeType) (ret UpdateImagePayloadGetDiskFormatRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImagePayloadGetDiskFormatAttributeType(arg *UpdateImagePayloadGetDiskFormatAttributeType, val UpdateImagePayloadGetDiskFormatRetType) {
+	*arg = &val
+}
+
+type UpdateImagePayloadGetDiskFormatArgType = string
+type UpdateImagePayloadGetDiskFormatRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateImagePayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateImagePayloadGetLabelsArgType = map[string]interface{}
+type UpdateImagePayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateImagePayloadGetLabelsAttributeTypeOk(arg UpdateImagePayloadGetLabelsAttributeType) (ret UpdateImagePayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImagePayloadGetLabelsAttributeType(arg *UpdateImagePayloadGetLabelsAttributeType, val UpdateImagePayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minDiskSize
+*/
+
+// isLong
+type UpdateImagePayloadGetMinDiskSizeAttributeType = *int64
+type UpdateImagePayloadGetMinDiskSizeArgType = int64
+type UpdateImagePayloadGetMinDiskSizeRetType = int64
+
+func getUpdateImagePayloadGetMinDiskSizeAttributeTypeOk(arg UpdateImagePayloadGetMinDiskSizeAttributeType) (ret UpdateImagePayloadGetMinDiskSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImagePayloadGetMinDiskSizeAttributeType(arg *UpdateImagePayloadGetMinDiskSizeAttributeType, val UpdateImagePayloadGetMinDiskSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for minRam
+*/
+
+// isLong
+type UpdateImagePayloadGetMinRamAttributeType = *int64
+type UpdateImagePayloadGetMinRamArgType = int64
+type UpdateImagePayloadGetMinRamRetType = int64
+
+func getUpdateImagePayloadGetMinRamAttributeTypeOk(arg UpdateImagePayloadGetMinRamAttributeType) (ret UpdateImagePayloadGetMinRamRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImagePayloadGetMinRamAttributeType(arg *UpdateImagePayloadGetMinRamAttributeType, val UpdateImagePayloadGetMinRamRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type UpdateImagePayloadGetNameAttributeType = *string
+
+func getUpdateImagePayloadGetNameAttributeTypeOk(arg UpdateImagePayloadGetNameAttributeType) (ret UpdateImagePayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImagePayloadGetNameAttributeType(arg *UpdateImagePayloadGetNameAttributeType, val UpdateImagePayloadGetNameRetType) {
+	*arg = &val
+}
+
+type UpdateImagePayloadGetNameArgType = string
+type UpdateImagePayloadGetNameRetType = string
+
+/*
+	types and functions for protected
+*/
+
+// isBoolean
+type UpdateImagePayloadgetProtectedAttributeType = *bool
+type UpdateImagePayloadgetProtectedArgType = bool
+type UpdateImagePayloadgetProtectedRetType = bool
+
+func getUpdateImagePayloadgetProtectedAttributeTypeOk(arg UpdateImagePayloadgetProtectedAttributeType) (ret UpdateImagePayloadgetProtectedRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImagePayloadgetProtectedAttributeType(arg *UpdateImagePayloadgetProtectedAttributeType, val UpdateImagePayloadgetProtectedRetType) {
+	*arg = &val
+}
+
 // UpdateImagePayload Object that represents an update request body of an Image.
 type UpdateImagePayload struct {
-	Config *ImageConfig `json:"config,omitempty"`
+	Config UpdateImagePayloadGetConfigAttributeType `json:"config,omitempty"`
 	// Object that represents a disk format. Possible values: `raw`, `qcow2`, `iso`.
-	DiskFormat *string `json:"diskFormat,omitempty"`
+	DiskFormat UpdateImagePayloadGetDiskFormatAttributeType `json:"diskFormat,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateImagePayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// Size in Gigabyte.
-	MinDiskSize *int64 `json:"minDiskSize,omitempty"`
+	MinDiskSize UpdateImagePayloadGetMinDiskSizeAttributeType `json:"minDiskSize,omitempty"`
 	// Size in Megabyte.
-	MinRam *int64 `json:"minRam,omitempty"`
+	MinRam UpdateImagePayloadGetMinRamAttributeType `json:"minRam,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name      *string `json:"name,omitempty"`
-	Protected *bool   `json:"protected,omitempty"`
+	Name      UpdateImagePayloadGetNameAttributeType      `json:"name,omitempty"`
+	Protected UpdateImagePayloadgetProtectedAttributeType `json:"protected,omitempty"`
 }
 
 // NewUpdateImagePayload instantiates a new UpdateImagePayload object
@@ -51,251 +193,188 @@ func NewUpdateImagePayloadWithDefaults() *UpdateImagePayload {
 }
 
 // GetConfig returns the Config field value if set, zero value otherwise.
-func (o *UpdateImagePayload) GetConfig() *ImageConfig {
-	if o == nil || IsNil(o.Config) {
-		var ret *ImageConfig
-		return ret
-	}
-	return o.Config
+func (o *UpdateImagePayload) GetConfig() (res UpdateImagePayloadGetConfigRetType) {
+	res, _ = o.GetConfigOk()
+	return
 }
 
 // GetConfigOk returns a tuple with the Config field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImagePayload) GetConfigOk() (*ImageConfig, bool) {
-	if o == nil || IsNil(o.Config) {
-		return nil, false
-	}
-	return o.Config, true
+func (o *UpdateImagePayload) GetConfigOk() (ret UpdateImagePayloadGetConfigRetType, ok bool) {
+	return getUpdateImagePayloadGetConfigAttributeTypeOk(o.Config)
 }
 
 // HasConfig returns a boolean if a field has been set.
 func (o *UpdateImagePayload) HasConfig() bool {
-	if o != nil && !IsNil(o.Config) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetConfigOk()
+	return ok
 }
 
 // SetConfig gets a reference to the given ImageConfig and assigns it to the Config field.
-func (o *UpdateImagePayload) SetConfig(v *ImageConfig) {
-	o.Config = v
+func (o *UpdateImagePayload) SetConfig(v UpdateImagePayloadGetConfigRetType) {
+	setUpdateImagePayloadGetConfigAttributeType(&o.Config, v)
 }
 
 // GetDiskFormat returns the DiskFormat field value if set, zero value otherwise.
-func (o *UpdateImagePayload) GetDiskFormat() *string {
-	if o == nil || IsNil(o.DiskFormat) {
-		var ret *string
-		return ret
-	}
-	return o.DiskFormat
+func (o *UpdateImagePayload) GetDiskFormat() (res UpdateImagePayloadGetDiskFormatRetType) {
+	res, _ = o.GetDiskFormatOk()
+	return
 }
 
 // GetDiskFormatOk returns a tuple with the DiskFormat field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImagePayload) GetDiskFormatOk() (*string, bool) {
-	if o == nil || IsNil(o.DiskFormat) {
-		return nil, false
-	}
-	return o.DiskFormat, true
+func (o *UpdateImagePayload) GetDiskFormatOk() (ret UpdateImagePayloadGetDiskFormatRetType, ok bool) {
+	return getUpdateImagePayloadGetDiskFormatAttributeTypeOk(o.DiskFormat)
 }
 
 // HasDiskFormat returns a boolean if a field has been set.
 func (o *UpdateImagePayload) HasDiskFormat() bool {
-	if o != nil && !IsNil(o.DiskFormat) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDiskFormatOk()
+	return ok
 }
 
 // SetDiskFormat gets a reference to the given string and assigns it to the DiskFormat field.
-func (o *UpdateImagePayload) SetDiskFormat(v *string) {
-	o.DiskFormat = v
+func (o *UpdateImagePayload) SetDiskFormat(v UpdateImagePayloadGetDiskFormatRetType) {
+	setUpdateImagePayloadGetDiskFormatAttributeType(&o.DiskFormat, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateImagePayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateImagePayload) GetLabels() (res UpdateImagePayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImagePayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateImagePayload) GetLabelsOk() (ret UpdateImagePayloadGetLabelsRetType, ok bool) {
+	return getUpdateImagePayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateImagePayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateImagePayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateImagePayload) SetLabels(v UpdateImagePayloadGetLabelsRetType) {
+	setUpdateImagePayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetMinDiskSize returns the MinDiskSize field value if set, zero value otherwise.
-func (o *UpdateImagePayload) GetMinDiskSize() *int64 {
-	if o == nil || IsNil(o.MinDiskSize) {
-		var ret *int64
-		return ret
-	}
-	return o.MinDiskSize
+func (o *UpdateImagePayload) GetMinDiskSize() (res UpdateImagePayloadGetMinDiskSizeRetType) {
+	res, _ = o.GetMinDiskSizeOk()
+	return
 }
 
 // GetMinDiskSizeOk returns a tuple with the MinDiskSize field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImagePayload) GetMinDiskSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinDiskSize) {
-		return nil, false
-	}
-	return o.MinDiskSize, true
+func (o *UpdateImagePayload) GetMinDiskSizeOk() (ret UpdateImagePayloadGetMinDiskSizeRetType, ok bool) {
+	return getUpdateImagePayloadGetMinDiskSizeAttributeTypeOk(o.MinDiskSize)
 }
 
 // HasMinDiskSize returns a boolean if a field has been set.
 func (o *UpdateImagePayload) HasMinDiskSize() bool {
-	if o != nil && !IsNil(o.MinDiskSize) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinDiskSizeOk()
+	return ok
 }
 
 // SetMinDiskSize gets a reference to the given int64 and assigns it to the MinDiskSize field.
-func (o *UpdateImagePayload) SetMinDiskSize(v *int64) {
-	o.MinDiskSize = v
+func (o *UpdateImagePayload) SetMinDiskSize(v UpdateImagePayloadGetMinDiskSizeRetType) {
+	setUpdateImagePayloadGetMinDiskSizeAttributeType(&o.MinDiskSize, v)
 }
 
 // GetMinRam returns the MinRam field value if set, zero value otherwise.
-func (o *UpdateImagePayload) GetMinRam() *int64 {
-	if o == nil || IsNil(o.MinRam) {
-		var ret *int64
-		return ret
-	}
-	return o.MinRam
+func (o *UpdateImagePayload) GetMinRam() (res UpdateImagePayloadGetMinRamRetType) {
+	res, _ = o.GetMinRamOk()
+	return
 }
 
 // GetMinRamOk returns a tuple with the MinRam field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImagePayload) GetMinRamOk() (*int64, bool) {
-	if o == nil || IsNil(o.MinRam) {
-		return nil, false
-	}
-	return o.MinRam, true
+func (o *UpdateImagePayload) GetMinRamOk() (ret UpdateImagePayloadGetMinRamRetType, ok bool) {
+	return getUpdateImagePayloadGetMinRamAttributeTypeOk(o.MinRam)
 }
 
 // HasMinRam returns a boolean if a field has been set.
 func (o *UpdateImagePayload) HasMinRam() bool {
-	if o != nil && !IsNil(o.MinRam) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetMinRamOk()
+	return ok
 }
 
 // SetMinRam gets a reference to the given int64 and assigns it to the MinRam field.
-func (o *UpdateImagePayload) SetMinRam(v *int64) {
-	o.MinRam = v
+func (o *UpdateImagePayload) SetMinRam(v UpdateImagePayloadGetMinRamRetType) {
+	setUpdateImagePayloadGetMinRamAttributeType(&o.MinRam, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *UpdateImagePayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *UpdateImagePayload) GetName() (res UpdateImagePayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImagePayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *UpdateImagePayload) GetNameOk() (ret UpdateImagePayloadGetNameRetType, ok bool) {
+	return getUpdateImagePayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *UpdateImagePayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *UpdateImagePayload) SetName(v *string) {
-	o.Name = v
+func (o *UpdateImagePayload) SetName(v UpdateImagePayloadGetNameRetType) {
+	setUpdateImagePayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetProtected returns the Protected field value if set, zero value otherwise.
-func (o *UpdateImagePayload) GetProtected() *bool {
-	if o == nil || IsNil(o.Protected) {
-		var ret *bool
-		return ret
-	}
-	return o.Protected
+func (o *UpdateImagePayload) GetProtected() (res UpdateImagePayloadgetProtectedRetType) {
+	res, _ = o.GetProtectedOk()
+	return
 }
 
 // GetProtectedOk returns a tuple with the Protected field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImagePayload) GetProtectedOk() (*bool, bool) {
-	if o == nil || IsNil(o.Protected) {
-		return nil, false
-	}
-	return o.Protected, true
+func (o *UpdateImagePayload) GetProtectedOk() (ret UpdateImagePayloadgetProtectedRetType, ok bool) {
+	return getUpdateImagePayloadgetProtectedAttributeTypeOk(o.Protected)
 }
 
 // HasProtected returns a boolean if a field has been set.
 func (o *UpdateImagePayload) HasProtected() bool {
-	if o != nil && !IsNil(o.Protected) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProtectedOk()
+	return ok
 }
 
 // SetProtected gets a reference to the given bool and assigns it to the Protected field.
-func (o *UpdateImagePayload) SetProtected(v *bool) {
-	o.Protected = v
+func (o *UpdateImagePayload) SetProtected(v UpdateImagePayloadgetProtectedRetType) {
+	setUpdateImagePayloadgetProtectedAttributeType(&o.Protected, v)
 }
 
 func (o UpdateImagePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Config) {
-		toSerialize["config"] = o.Config
+	if val, ok := getUpdateImagePayloadGetConfigAttributeTypeOk(o.Config); ok {
+		toSerialize["Config"] = val
 	}
-	if !IsNil(o.DiskFormat) {
-		toSerialize["diskFormat"] = o.DiskFormat
+	if val, ok := getUpdateImagePayloadGetDiskFormatAttributeTypeOk(o.DiskFormat); ok {
+		toSerialize["DiskFormat"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateImagePayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.MinDiskSize) {
-		toSerialize["minDiskSize"] = o.MinDiskSize
+	if val, ok := getUpdateImagePayloadGetMinDiskSizeAttributeTypeOk(o.MinDiskSize); ok {
+		toSerialize["MinDiskSize"] = val
 	}
-	if !IsNil(o.MinRam) {
-		toSerialize["minRam"] = o.MinRam
+	if val, ok := getUpdateImagePayloadGetMinRamAttributeTypeOk(o.MinRam); ok {
+		toSerialize["MinRam"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getUpdateImagePayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.Protected) {
-		toSerialize["protected"] = o.Protected
+	if val, ok := getUpdateImagePayloadgetProtectedAttributeTypeOk(o.Protected); ok {
+		toSerialize["Protected"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_image_share_payload.go b/services/iaas/model_update_image_share_payload.go
index 684537c26..0cf90cf34 100644
--- a/services/iaas/model_update_image_share_payload.go
+++ b/services/iaas/model_update_image_share_payload.go
@@ -17,12 +17,52 @@ import (
 // checks if the UpdateImageSharePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateImageSharePayload{}
 
+/*
+	types and functions for parentOrganization
+*/
+
+// isBoolean
+type UpdateImageSharePayloadgetParentOrganizationAttributeType = *bool
+type UpdateImageSharePayloadgetParentOrganizationArgType = bool
+type UpdateImageSharePayloadgetParentOrganizationRetType = bool
+
+func getUpdateImageSharePayloadgetParentOrganizationAttributeTypeOk(arg UpdateImageSharePayloadgetParentOrganizationAttributeType) (ret UpdateImageSharePayloadgetParentOrganizationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImageSharePayloadgetParentOrganizationAttributeType(arg *UpdateImageSharePayloadgetParentOrganizationAttributeType, val UpdateImageSharePayloadgetParentOrganizationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for projects
+*/
+
+// isArray
+type UpdateImageSharePayloadGetProjectsAttributeType = *[]string
+type UpdateImageSharePayloadGetProjectsArgType = []string
+type UpdateImageSharePayloadGetProjectsRetType = []string
+
+func getUpdateImageSharePayloadGetProjectsAttributeTypeOk(arg UpdateImageSharePayloadGetProjectsAttributeType) (ret UpdateImageSharePayloadGetProjectsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateImageSharePayloadGetProjectsAttributeType(arg *UpdateImageSharePayloadGetProjectsAttributeType, val UpdateImageSharePayloadGetProjectsRetType) {
+	*arg = &val
+}
+
 // UpdateImageSharePayload Share details of an Image. For requests ParentOrganization and Projects are mutually exclusive.
 type UpdateImageSharePayload struct {
 	// Image is shared with all projects inside the image owners organization.
-	ParentOrganization *bool `json:"parentOrganization,omitempty"`
+	ParentOrganization UpdateImageSharePayloadgetParentOrganizationAttributeType `json:"parentOrganization,omitempty"`
 	// List of all projects the Image is shared with.
-	Projects *[]string `json:"projects,omitempty"`
+	Projects UpdateImageSharePayloadGetProjectsAttributeType `json:"projects,omitempty"`
 }
 
 // NewUpdateImageSharePayload instantiates a new UpdateImageSharePayload object
@@ -43,76 +83,58 @@ func NewUpdateImageSharePayloadWithDefaults() *UpdateImageSharePayload {
 }
 
 // GetParentOrganization returns the ParentOrganization field value if set, zero value otherwise.
-func (o *UpdateImageSharePayload) GetParentOrganization() *bool {
-	if o == nil || IsNil(o.ParentOrganization) {
-		var ret *bool
-		return ret
-	}
-	return o.ParentOrganization
+func (o *UpdateImageSharePayload) GetParentOrganization() (res UpdateImageSharePayloadgetParentOrganizationRetType) {
+	res, _ = o.GetParentOrganizationOk()
+	return
 }
 
 // GetParentOrganizationOk returns a tuple with the ParentOrganization field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImageSharePayload) GetParentOrganizationOk() (*bool, bool) {
-	if o == nil || IsNil(o.ParentOrganization) {
-		return nil, false
-	}
-	return o.ParentOrganization, true
+func (o *UpdateImageSharePayload) GetParentOrganizationOk() (ret UpdateImageSharePayloadgetParentOrganizationRetType, ok bool) {
+	return getUpdateImageSharePayloadgetParentOrganizationAttributeTypeOk(o.ParentOrganization)
 }
 
 // HasParentOrganization returns a boolean if a field has been set.
 func (o *UpdateImageSharePayload) HasParentOrganization() bool {
-	if o != nil && !IsNil(o.ParentOrganization) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetParentOrganizationOk()
+	return ok
 }
 
 // SetParentOrganization gets a reference to the given bool and assigns it to the ParentOrganization field.
-func (o *UpdateImageSharePayload) SetParentOrganization(v *bool) {
-	o.ParentOrganization = v
+func (o *UpdateImageSharePayload) SetParentOrganization(v UpdateImageSharePayloadgetParentOrganizationRetType) {
+	setUpdateImageSharePayloadgetParentOrganizationAttributeType(&o.ParentOrganization, v)
 }
 
 // GetProjects returns the Projects field value if set, zero value otherwise.
-func (o *UpdateImageSharePayload) GetProjects() *[]string {
-	if o == nil || IsNil(o.Projects) {
-		var ret *[]string
-		return ret
-	}
-	return o.Projects
+func (o *UpdateImageSharePayload) GetProjects() (res UpdateImageSharePayloadGetProjectsRetType) {
+	res, _ = o.GetProjectsOk()
+	return
 }
 
 // GetProjectsOk returns a tuple with the Projects field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateImageSharePayload) GetProjectsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Projects) {
-		return nil, false
-	}
-	return o.Projects, true
+func (o *UpdateImageSharePayload) GetProjectsOk() (ret UpdateImageSharePayloadGetProjectsRetType, ok bool) {
+	return getUpdateImageSharePayloadGetProjectsAttributeTypeOk(o.Projects)
 }
 
 // HasProjects returns a boolean if a field has been set.
 func (o *UpdateImageSharePayload) HasProjects() bool {
-	if o != nil && !IsNil(o.Projects) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetProjectsOk()
+	return ok
 }
 
 // SetProjects gets a reference to the given []string and assigns it to the Projects field.
-func (o *UpdateImageSharePayload) SetProjects(v *[]string) {
-	o.Projects = v
+func (o *UpdateImageSharePayload) SetProjects(v UpdateImageSharePayloadGetProjectsRetType) {
+	setUpdateImageSharePayloadGetProjectsAttributeType(&o.Projects, v)
 }
 
 func (o UpdateImageSharePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.ParentOrganization) {
-		toSerialize["parentOrganization"] = o.ParentOrganization
+	if val, ok := getUpdateImageSharePayloadgetParentOrganizationAttributeTypeOk(o.ParentOrganization); ok {
+		toSerialize["ParentOrganization"] = val
 	}
-	if !IsNil(o.Projects) {
-		toSerialize["projects"] = o.Projects
+	if val, ok := getUpdateImageSharePayloadGetProjectsAttributeTypeOk(o.Projects); ok {
+		toSerialize["Projects"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_key_pair_payload.go b/services/iaas/model_update_key_pair_payload.go
index 0d7ecb4a5..60da42efb 100644
--- a/services/iaas/model_update_key_pair_payload.go
+++ b/services/iaas/model_update_key_pair_payload.go
@@ -17,10 +17,30 @@ import (
 // checks if the UpdateKeyPairPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateKeyPairPayload{}
 
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateKeyPairPayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateKeyPairPayloadGetLabelsArgType = map[string]interface{}
+type UpdateKeyPairPayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateKeyPairPayloadGetLabelsAttributeTypeOk(arg UpdateKeyPairPayloadGetLabelsAttributeType) (ret UpdateKeyPairPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateKeyPairPayloadGetLabelsAttributeType(arg *UpdateKeyPairPayloadGetLabelsAttributeType, val UpdateKeyPairPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
 // UpdateKeyPairPayload Object that represents an update request body of a public key of an SSH keypair.
 type UpdateKeyPairPayload struct {
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateKeyPairPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 }
 
 // NewUpdateKeyPairPayload instantiates a new UpdateKeyPairPayload object
@@ -41,41 +61,32 @@ func NewUpdateKeyPairPayloadWithDefaults() *UpdateKeyPairPayload {
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateKeyPairPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateKeyPairPayload) GetLabels() (res UpdateKeyPairPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateKeyPairPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateKeyPairPayload) GetLabelsOk() (ret UpdateKeyPairPayloadGetLabelsRetType, ok bool) {
+	return getUpdateKeyPairPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateKeyPairPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateKeyPairPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateKeyPairPayload) SetLabels(v UpdateKeyPairPayloadGetLabelsRetType) {
+	setUpdateKeyPairPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 func (o UpdateKeyPairPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateKeyPairPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_network_address_family.go b/services/iaas/model_update_network_address_family.go
index c17c3e9e0..aaefe91ae 100644
--- a/services/iaas/model_update_network_address_family.go
+++ b/services/iaas/model_update_network_address_family.go
@@ -17,10 +17,50 @@ import (
 // checks if the UpdateNetworkAddressFamily type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateNetworkAddressFamily{}
 
+/*
+	types and functions for ipv4
+*/
+
+// isModel
+type UpdateNetworkAddressFamilyGetIpv4AttributeType = *UpdateNetworkIPv4Body
+type UpdateNetworkAddressFamilyGetIpv4ArgType = UpdateNetworkIPv4Body
+type UpdateNetworkAddressFamilyGetIpv4RetType = UpdateNetworkIPv4Body
+
+func getUpdateNetworkAddressFamilyGetIpv4AttributeTypeOk(arg UpdateNetworkAddressFamilyGetIpv4AttributeType) (ret UpdateNetworkAddressFamilyGetIpv4RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNetworkAddressFamilyGetIpv4AttributeType(arg *UpdateNetworkAddressFamilyGetIpv4AttributeType, val UpdateNetworkAddressFamilyGetIpv4RetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for ipv6
+*/
+
+// isModel
+type UpdateNetworkAddressFamilyGetIpv6AttributeType = *UpdateNetworkIPv6Body
+type UpdateNetworkAddressFamilyGetIpv6ArgType = UpdateNetworkIPv6Body
+type UpdateNetworkAddressFamilyGetIpv6RetType = UpdateNetworkIPv6Body
+
+func getUpdateNetworkAddressFamilyGetIpv6AttributeTypeOk(arg UpdateNetworkAddressFamilyGetIpv6AttributeType) (ret UpdateNetworkAddressFamilyGetIpv6RetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNetworkAddressFamilyGetIpv6AttributeType(arg *UpdateNetworkAddressFamilyGetIpv6AttributeType, val UpdateNetworkAddressFamilyGetIpv6RetType) {
+	*arg = &val
+}
+
 // UpdateNetworkAddressFamily The addressFamily object for a network update request.
 type UpdateNetworkAddressFamily struct {
-	Ipv4 *UpdateNetworkIPv4Body `json:"ipv4,omitempty"`
-	Ipv6 *UpdateNetworkIPv6Body `json:"ipv6,omitempty"`
+	Ipv4 UpdateNetworkAddressFamilyGetIpv4AttributeType `json:"ipv4,omitempty"`
+	Ipv6 UpdateNetworkAddressFamilyGetIpv6AttributeType `json:"ipv6,omitempty"`
 }
 
 // NewUpdateNetworkAddressFamily instantiates a new UpdateNetworkAddressFamily object
@@ -41,76 +81,58 @@ func NewUpdateNetworkAddressFamilyWithDefaults() *UpdateNetworkAddressFamily {
 }
 
 // GetIpv4 returns the Ipv4 field value if set, zero value otherwise.
-func (o *UpdateNetworkAddressFamily) GetIpv4() *UpdateNetworkIPv4Body {
-	if o == nil || IsNil(o.Ipv4) {
-		var ret *UpdateNetworkIPv4Body
-		return ret
-	}
-	return o.Ipv4
+func (o *UpdateNetworkAddressFamily) GetIpv4() (res UpdateNetworkAddressFamilyGetIpv4RetType) {
+	res, _ = o.GetIpv4Ok()
+	return
 }
 
 // GetIpv4Ok returns a tuple with the Ipv4 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNetworkAddressFamily) GetIpv4Ok() (*UpdateNetworkIPv4Body, bool) {
-	if o == nil || IsNil(o.Ipv4) {
-		return nil, false
-	}
-	return o.Ipv4, true
+func (o *UpdateNetworkAddressFamily) GetIpv4Ok() (ret UpdateNetworkAddressFamilyGetIpv4RetType, ok bool) {
+	return getUpdateNetworkAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4)
 }
 
 // HasIpv4 returns a boolean if a field has been set.
 func (o *UpdateNetworkAddressFamily) HasIpv4() bool {
-	if o != nil && !IsNil(o.Ipv4) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv4Ok()
+	return ok
 }
 
 // SetIpv4 gets a reference to the given UpdateNetworkIPv4Body and assigns it to the Ipv4 field.
-func (o *UpdateNetworkAddressFamily) SetIpv4(v *UpdateNetworkIPv4Body) {
-	o.Ipv4 = v
+func (o *UpdateNetworkAddressFamily) SetIpv4(v UpdateNetworkAddressFamilyGetIpv4RetType) {
+	setUpdateNetworkAddressFamilyGetIpv4AttributeType(&o.Ipv4, v)
 }
 
 // GetIpv6 returns the Ipv6 field value if set, zero value otherwise.
-func (o *UpdateNetworkAddressFamily) GetIpv6() *UpdateNetworkIPv6Body {
-	if o == nil || IsNil(o.Ipv6) {
-		var ret *UpdateNetworkIPv6Body
-		return ret
-	}
-	return o.Ipv6
+func (o *UpdateNetworkAddressFamily) GetIpv6() (res UpdateNetworkAddressFamilyGetIpv6RetType) {
+	res, _ = o.GetIpv6Ok()
+	return
 }
 
 // GetIpv6Ok returns a tuple with the Ipv6 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNetworkAddressFamily) GetIpv6Ok() (*UpdateNetworkIPv6Body, bool) {
-	if o == nil || IsNil(o.Ipv6) {
-		return nil, false
-	}
-	return o.Ipv6, true
+func (o *UpdateNetworkAddressFamily) GetIpv6Ok() (ret UpdateNetworkAddressFamilyGetIpv6RetType, ok bool) {
+	return getUpdateNetworkAddressFamilyGetIpv6AttributeTypeOk(o.Ipv6)
 }
 
 // HasIpv6 returns a boolean if a field has been set.
 func (o *UpdateNetworkAddressFamily) HasIpv6() bool {
-	if o != nil && !IsNil(o.Ipv6) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpv6Ok()
+	return ok
 }
 
 // SetIpv6 gets a reference to the given UpdateNetworkIPv6Body and assigns it to the Ipv6 field.
-func (o *UpdateNetworkAddressFamily) SetIpv6(v *UpdateNetworkIPv6Body) {
-	o.Ipv6 = v
+func (o *UpdateNetworkAddressFamily) SetIpv6(v UpdateNetworkAddressFamilyGetIpv6RetType) {
+	setUpdateNetworkAddressFamilyGetIpv6AttributeType(&o.Ipv6, v)
 }
 
 func (o UpdateNetworkAddressFamily) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Ipv4) {
-		toSerialize["ipv4"] = o.Ipv4
+	if val, ok := getUpdateNetworkAddressFamilyGetIpv4AttributeTypeOk(o.Ipv4); ok {
+		toSerialize["Ipv4"] = val
 	}
-	if !IsNil(o.Ipv6) {
-		toSerialize["ipv6"] = o.Ipv6
+	if val, ok := getUpdateNetworkAddressFamilyGetIpv6AttributeTypeOk(o.Ipv6); ok {
+		toSerialize["Ipv6"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_network_area_route_payload.go b/services/iaas/model_update_network_area_route_payload.go
index 1655dff76..a7f118373 100644
--- a/services/iaas/model_update_network_area_route_payload.go
+++ b/services/iaas/model_update_network_area_route_payload.go
@@ -17,10 +17,30 @@ import (
 // checks if the UpdateNetworkAreaRoutePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateNetworkAreaRoutePayload{}
 
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateNetworkAreaRoutePayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateNetworkAreaRoutePayloadGetLabelsArgType = map[string]interface{}
+type UpdateNetworkAreaRoutePayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateNetworkAreaRoutePayloadGetLabelsAttributeTypeOk(arg UpdateNetworkAreaRoutePayloadGetLabelsAttributeType) (ret UpdateNetworkAreaRoutePayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNetworkAreaRoutePayloadGetLabelsAttributeType(arg *UpdateNetworkAreaRoutePayloadGetLabelsAttributeType, val UpdateNetworkAreaRoutePayloadGetLabelsRetType) {
+	*arg = &val
+}
+
 // UpdateNetworkAreaRoutePayload Object that represents the request body for a route update.
 type UpdateNetworkAreaRoutePayload struct {
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateNetworkAreaRoutePayloadGetLabelsAttributeType `json:"labels,omitempty"`
 }
 
 // NewUpdateNetworkAreaRoutePayload instantiates a new UpdateNetworkAreaRoutePayload object
@@ -41,41 +61,32 @@ func NewUpdateNetworkAreaRoutePayloadWithDefaults() *UpdateNetworkAreaRoutePaylo
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateNetworkAreaRoutePayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateNetworkAreaRoutePayload) GetLabels() (res UpdateNetworkAreaRoutePayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNetworkAreaRoutePayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateNetworkAreaRoutePayload) GetLabelsOk() (ret UpdateNetworkAreaRoutePayloadGetLabelsRetType, ok bool) {
+	return getUpdateNetworkAreaRoutePayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateNetworkAreaRoutePayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateNetworkAreaRoutePayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateNetworkAreaRoutePayload) SetLabels(v UpdateNetworkAreaRoutePayloadGetLabelsRetType) {
+	setUpdateNetworkAreaRoutePayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 func (o UpdateNetworkAreaRoutePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateNetworkAreaRoutePayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_network_ipv4_body.go b/services/iaas/model_update_network_ipv4_body.go
index 546385e8c..80392f7d7 100644
--- a/services/iaas/model_update_network_ipv4_body.go
+++ b/services/iaas/model_update_network_ipv4_body.go
@@ -17,12 +17,57 @@ import (
 // checks if the UpdateNetworkIPv4Body type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateNetworkIPv4Body{}
 
+/*
+	types and functions for gateway
+*/
+
+// isNullableString
+type UpdateNetworkIPv4BodyGetGatewayAttributeType = *NullableString
+
+func getUpdateNetworkIPv4BodyGetGatewayAttributeTypeOk(arg UpdateNetworkIPv4BodyGetGatewayAttributeType) (ret UpdateNetworkIPv4BodyGetGatewayRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setUpdateNetworkIPv4BodyGetGatewayAttributeType(arg *UpdateNetworkIPv4BodyGetGatewayAttributeType, val UpdateNetworkIPv4BodyGetGatewayRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type UpdateNetworkIPv4BodyGetGatewayArgType = *string
+type UpdateNetworkIPv4BodyGetGatewayRetType = *string
+
+/*
+	types and functions for nameservers
+*/
+
+// isArray
+type UpdateNetworkIPv4BodyGetNameserversAttributeType = *[]string
+type UpdateNetworkIPv4BodyGetNameserversArgType = []string
+type UpdateNetworkIPv4BodyGetNameserversRetType = []string
+
+func getUpdateNetworkIPv4BodyGetNameserversAttributeTypeOk(arg UpdateNetworkIPv4BodyGetNameserversAttributeType) (ret UpdateNetworkIPv4BodyGetNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNetworkIPv4BodyGetNameserversAttributeType(arg *UpdateNetworkIPv4BodyGetNameserversAttributeType, val UpdateNetworkIPv4BodyGetNameserversRetType) {
+	*arg = &val
+}
+
 // UpdateNetworkIPv4Body The config object for a IPv4 network update.
 type UpdateNetworkIPv4Body struct {
 	// The gateway of a network. If not specified the first IP of the network will be assigned as the gateway. If 'null' is sent, then the network doesn't have a gateway.
-	Gateway *NullableString `json:"gateway,omitempty"`
+	Gateway UpdateNetworkIPv4BodyGetGatewayAttributeType `json:"gateway,omitempty"`
 	// A list containing DNS Servers/Nameservers for IPv4.
-	Nameservers *[]string `json:"nameservers,omitempty"`
+	Nameservers UpdateNetworkIPv4BodyGetNameserversAttributeType `json:"nameservers,omitempty"`
 }
 
 // NewUpdateNetworkIPv4Body instantiates a new UpdateNetworkIPv4Body object
@@ -43,96 +88,69 @@ func NewUpdateNetworkIPv4BodyWithDefaults() *UpdateNetworkIPv4Body {
 }
 
 // GetGateway returns the Gateway field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *UpdateNetworkIPv4Body) GetGateway() *string {
-	if o == nil || IsNil(o.Gateway) || IsNil(o.Gateway.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.Gateway.Get()
+func (o *UpdateNetworkIPv4Body) GetGateway() (res UpdateNetworkIPv4BodyGetGatewayRetType) {
+	res, _ = o.GetGatewayOk()
+	return
 }
 
 // GetGatewayOk returns a tuple with the Gateway field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *UpdateNetworkIPv4Body) GetGatewayOk() (*string, bool) {
-	if o == nil || IsNil(o.Gateway) {
-		return nil, false
-	}
-	return o.Gateway.Get(), o.Gateway.IsSet()
+func (o *UpdateNetworkIPv4Body) GetGatewayOk() (ret UpdateNetworkIPv4BodyGetGatewayRetType, ok bool) {
+	return getUpdateNetworkIPv4BodyGetGatewayAttributeTypeOk(o.Gateway)
 }
 
 // HasGateway returns a boolean if a field has been set.
 func (o *UpdateNetworkIPv4Body) HasGateway() bool {
-	if o != nil && !IsNil(o.Gateway) && o.Gateway.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetGatewayOk()
+	return ok
 }
 
 // SetGateway gets a reference to the given string and assigns it to the Gateway field.
-func (o *UpdateNetworkIPv4Body) SetGateway(v *string) {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(v)
+func (o *UpdateNetworkIPv4Body) SetGateway(v UpdateNetworkIPv4BodyGetGatewayRetType) {
+	setUpdateNetworkIPv4BodyGetGatewayAttributeType(&o.Gateway, v)
 }
 
 // SetGatewayNil sets the value for Gateway to be an explicit nil
 func (o *UpdateNetworkIPv4Body) SetGatewayNil() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(nil)
+	o.Gateway = nil
 }
 
 // UnsetGateway ensures that no value is present for Gateway, not even an explicit nil
 func (o *UpdateNetworkIPv4Body) UnsetGateway() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Unset()
+	o.Gateway = nil
 }
 
 // GetNameservers returns the Nameservers field value if set, zero value otherwise.
-func (o *UpdateNetworkIPv4Body) GetNameservers() *[]string {
-	if o == nil || IsNil(o.Nameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.Nameservers
+func (o *UpdateNetworkIPv4Body) GetNameservers() (res UpdateNetworkIPv4BodyGetNameserversRetType) {
+	res, _ = o.GetNameserversOk()
+	return
 }
 
 // GetNameserversOk returns a tuple with the Nameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNetworkIPv4Body) GetNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Nameservers) {
-		return nil, false
-	}
-	return o.Nameservers, true
+func (o *UpdateNetworkIPv4Body) GetNameserversOk() (ret UpdateNetworkIPv4BodyGetNameserversRetType, ok bool) {
+	return getUpdateNetworkIPv4BodyGetNameserversAttributeTypeOk(o.Nameservers)
 }
 
 // HasNameservers returns a boolean if a field has been set.
 func (o *UpdateNetworkIPv4Body) HasNameservers() bool {
-	if o != nil && !IsNil(o.Nameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameserversOk()
+	return ok
 }
 
 // SetNameservers gets a reference to the given []string and assigns it to the Nameservers field.
-func (o *UpdateNetworkIPv4Body) SetNameservers(v *[]string) {
-	o.Nameservers = v
+func (o *UpdateNetworkIPv4Body) SetNameservers(v UpdateNetworkIPv4BodyGetNameserversRetType) {
+	setUpdateNetworkIPv4BodyGetNameserversAttributeType(&o.Nameservers, v)
 }
 
 func (o UpdateNetworkIPv4Body) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if o.Gateway.IsSet() {
-		toSerialize["gateway"] = o.Gateway.Get()
+	if val, ok := getUpdateNetworkIPv4BodyGetGatewayAttributeTypeOk(o.Gateway); ok {
+		toSerialize["Gateway"] = val
 	}
-	if !IsNil(o.Nameservers) {
-		toSerialize["nameservers"] = o.Nameservers
+	if val, ok := getUpdateNetworkIPv4BodyGetNameserversAttributeTypeOk(o.Nameservers); ok {
+		toSerialize["Nameservers"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_network_ipv6_body.go b/services/iaas/model_update_network_ipv6_body.go
index 7fd66ef6f..8cd31adc5 100644
--- a/services/iaas/model_update_network_ipv6_body.go
+++ b/services/iaas/model_update_network_ipv6_body.go
@@ -17,12 +17,57 @@ import (
 // checks if the UpdateNetworkIPv6Body type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateNetworkIPv6Body{}
 
+/*
+	types and functions for gateway
+*/
+
+// isNullableString
+type UpdateNetworkIPv6BodyGetGatewayAttributeType = *NullableString
+
+func getUpdateNetworkIPv6BodyGetGatewayAttributeTypeOk(arg UpdateNetworkIPv6BodyGetGatewayAttributeType) (ret UpdateNetworkIPv6BodyGetGatewayRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setUpdateNetworkIPv6BodyGetGatewayAttributeType(arg *UpdateNetworkIPv6BodyGetGatewayAttributeType, val UpdateNetworkIPv6BodyGetGatewayRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type UpdateNetworkIPv6BodyGetGatewayArgType = *string
+type UpdateNetworkIPv6BodyGetGatewayRetType = *string
+
+/*
+	types and functions for nameservers
+*/
+
+// isArray
+type UpdateNetworkIPv6BodyGetNameserversAttributeType = *[]string
+type UpdateNetworkIPv6BodyGetNameserversArgType = []string
+type UpdateNetworkIPv6BodyGetNameserversRetType = []string
+
+func getUpdateNetworkIPv6BodyGetNameserversAttributeTypeOk(arg UpdateNetworkIPv6BodyGetNameserversAttributeType) (ret UpdateNetworkIPv6BodyGetNameserversRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNetworkIPv6BodyGetNameserversAttributeType(arg *UpdateNetworkIPv6BodyGetNameserversAttributeType, val UpdateNetworkIPv6BodyGetNameserversRetType) {
+	*arg = &val
+}
+
 // UpdateNetworkIPv6Body The config object for a IPv6 network update.
 type UpdateNetworkIPv6Body struct {
 	// The gateway of a network. If not specified the first IP of the network will be assigned as the gateway. If 'null' is sent, then the network doesn't have a gateway.
-	Gateway *NullableString `json:"gateway,omitempty"`
+	Gateway UpdateNetworkIPv6BodyGetGatewayAttributeType `json:"gateway,omitempty"`
 	// A list containing DNS Servers/Nameservers for IPv6.
-	Nameservers *[]string `json:"nameservers,omitempty"`
+	Nameservers UpdateNetworkIPv6BodyGetNameserversAttributeType `json:"nameservers,omitempty"`
 }
 
 // NewUpdateNetworkIPv6Body instantiates a new UpdateNetworkIPv6Body object
@@ -43,96 +88,69 @@ func NewUpdateNetworkIPv6BodyWithDefaults() *UpdateNetworkIPv6Body {
 }
 
 // GetGateway returns the Gateway field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *UpdateNetworkIPv6Body) GetGateway() *string {
-	if o == nil || IsNil(o.Gateway) || IsNil(o.Gateway.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.Gateway.Get()
+func (o *UpdateNetworkIPv6Body) GetGateway() (res UpdateNetworkIPv6BodyGetGatewayRetType) {
+	res, _ = o.GetGatewayOk()
+	return
 }
 
 // GetGatewayOk returns a tuple with the Gateway field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *UpdateNetworkIPv6Body) GetGatewayOk() (*string, bool) {
-	if o == nil || IsNil(o.Gateway) {
-		return nil, false
-	}
-	return o.Gateway.Get(), o.Gateway.IsSet()
+func (o *UpdateNetworkIPv6Body) GetGatewayOk() (ret UpdateNetworkIPv6BodyGetGatewayRetType, ok bool) {
+	return getUpdateNetworkIPv6BodyGetGatewayAttributeTypeOk(o.Gateway)
 }
 
 // HasGateway returns a boolean if a field has been set.
 func (o *UpdateNetworkIPv6Body) HasGateway() bool {
-	if o != nil && !IsNil(o.Gateway) && o.Gateway.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetGatewayOk()
+	return ok
 }
 
 // SetGateway gets a reference to the given string and assigns it to the Gateway field.
-func (o *UpdateNetworkIPv6Body) SetGateway(v *string) {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(v)
+func (o *UpdateNetworkIPv6Body) SetGateway(v UpdateNetworkIPv6BodyGetGatewayRetType) {
+	setUpdateNetworkIPv6BodyGetGatewayAttributeType(&o.Gateway, v)
 }
 
 // SetGatewayNil sets the value for Gateway to be an explicit nil
 func (o *UpdateNetworkIPv6Body) SetGatewayNil() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Set(nil)
+	o.Gateway = nil
 }
 
 // UnsetGateway ensures that no value is present for Gateway, not even an explicit nil
 func (o *UpdateNetworkIPv6Body) UnsetGateway() {
-	if IsNil(o.Gateway) {
-		o.Gateway = new(NullableString)
-	}
-	o.Gateway.Unset()
+	o.Gateway = nil
 }
 
 // GetNameservers returns the Nameservers field value if set, zero value otherwise.
-func (o *UpdateNetworkIPv6Body) GetNameservers() *[]string {
-	if o == nil || IsNil(o.Nameservers) {
-		var ret *[]string
-		return ret
-	}
-	return o.Nameservers
+func (o *UpdateNetworkIPv6Body) GetNameservers() (res UpdateNetworkIPv6BodyGetNameserversRetType) {
+	res, _ = o.GetNameserversOk()
+	return
 }
 
 // GetNameserversOk returns a tuple with the Nameservers field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNetworkIPv6Body) GetNameserversOk() (*[]string, bool) {
-	if o == nil || IsNil(o.Nameservers) {
-		return nil, false
-	}
-	return o.Nameservers, true
+func (o *UpdateNetworkIPv6Body) GetNameserversOk() (ret UpdateNetworkIPv6BodyGetNameserversRetType, ok bool) {
+	return getUpdateNetworkIPv6BodyGetNameserversAttributeTypeOk(o.Nameservers)
 }
 
 // HasNameservers returns a boolean if a field has been set.
 func (o *UpdateNetworkIPv6Body) HasNameservers() bool {
-	if o != nil && !IsNil(o.Nameservers) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameserversOk()
+	return ok
 }
 
 // SetNameservers gets a reference to the given []string and assigns it to the Nameservers field.
-func (o *UpdateNetworkIPv6Body) SetNameservers(v *[]string) {
-	o.Nameservers = v
+func (o *UpdateNetworkIPv6Body) SetNameservers(v UpdateNetworkIPv6BodyGetNameserversRetType) {
+	setUpdateNetworkIPv6BodyGetNameserversAttributeType(&o.Nameservers, v)
 }
 
 func (o UpdateNetworkIPv6Body) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if o.Gateway.IsSet() {
-		toSerialize["gateway"] = o.Gateway.Get()
+	if val, ok := getUpdateNetworkIPv6BodyGetGatewayAttributeTypeOk(o.Gateway); ok {
+		toSerialize["Gateway"] = val
 	}
-	if !IsNil(o.Nameservers) {
-		toSerialize["nameservers"] = o.Nameservers
+	if val, ok := getUpdateNetworkIPv6BodyGetNameserversAttributeTypeOk(o.Nameservers); ok {
+		toSerialize["Nameservers"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_nic_payload.go b/services/iaas/model_update_nic_payload.go
index 103b72a62..0964b9201 100644
--- a/services/iaas/model_update_nic_payload.go
+++ b/services/iaas/model_update_nic_payload.go
@@ -17,18 +17,119 @@ import (
 // checks if the UpdateNicPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateNicPayload{}
 
+/*
+	types and functions for allowedAddresses
+*/
+
+// isArray
+type UpdateNicPayloadGetAllowedAddressesAttributeType = *[]AllowedAddressesInner
+type UpdateNicPayloadGetAllowedAddressesArgType = []AllowedAddressesInner
+type UpdateNicPayloadGetAllowedAddressesRetType = []AllowedAddressesInner
+
+func getUpdateNicPayloadGetAllowedAddressesAttributeTypeOk(arg UpdateNicPayloadGetAllowedAddressesAttributeType) (ret UpdateNicPayloadGetAllowedAddressesRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNicPayloadGetAllowedAddressesAttributeType(arg *UpdateNicPayloadGetAllowedAddressesAttributeType, val UpdateNicPayloadGetAllowedAddressesRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateNicPayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateNicPayloadGetLabelsArgType = map[string]interface{}
+type UpdateNicPayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateNicPayloadGetLabelsAttributeTypeOk(arg UpdateNicPayloadGetLabelsAttributeType) (ret UpdateNicPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNicPayloadGetLabelsAttributeType(arg *UpdateNicPayloadGetLabelsAttributeType, val UpdateNicPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type UpdateNicPayloadGetNameAttributeType = *string
+
+func getUpdateNicPayloadGetNameAttributeTypeOk(arg UpdateNicPayloadGetNameAttributeType) (ret UpdateNicPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNicPayloadGetNameAttributeType(arg *UpdateNicPayloadGetNameAttributeType, val UpdateNicPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type UpdateNicPayloadGetNameArgType = string
+type UpdateNicPayloadGetNameRetType = string
+
+/*
+	types and functions for nicSecurity
+*/
+
+// isBoolean
+type UpdateNicPayloadgetNicSecurityAttributeType = *bool
+type UpdateNicPayloadgetNicSecurityArgType = bool
+type UpdateNicPayloadgetNicSecurityRetType = bool
+
+func getUpdateNicPayloadgetNicSecurityAttributeTypeOk(arg UpdateNicPayloadgetNicSecurityAttributeType) (ret UpdateNicPayloadgetNicSecurityRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNicPayloadgetNicSecurityAttributeType(arg *UpdateNicPayloadgetNicSecurityAttributeType, val UpdateNicPayloadgetNicSecurityRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for securityGroups
+*/
+
+// isArray
+type UpdateNicPayloadGetSecurityGroupsAttributeType = *[]string
+type UpdateNicPayloadGetSecurityGroupsArgType = []string
+type UpdateNicPayloadGetSecurityGroupsRetType = []string
+
+func getUpdateNicPayloadGetSecurityGroupsAttributeTypeOk(arg UpdateNicPayloadGetSecurityGroupsAttributeType) (ret UpdateNicPayloadGetSecurityGroupsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateNicPayloadGetSecurityGroupsAttributeType(arg *UpdateNicPayloadGetSecurityGroupsAttributeType, val UpdateNicPayloadGetSecurityGroupsRetType) {
+	*arg = &val
+}
+
 // UpdateNicPayload Object that represents a network interface update.
 type UpdateNicPayload struct {
 	// A list of IPs or CIDR notations.
-	AllowedAddresses *[]AllowedAddressesInner `json:"allowedAddresses,omitempty"`
+	AllowedAddresses UpdateNicPayloadGetAllowedAddressesAttributeType `json:"allowedAddresses,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateNicPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name UpdateNicPayloadGetNameAttributeType `json:"name,omitempty"`
 	// If this is set to false, then no security groups will apply to this network interface.
-	NicSecurity *bool `json:"nicSecurity,omitempty"`
+	NicSecurity UpdateNicPayloadgetNicSecurityAttributeType `json:"nicSecurity,omitempty"`
 	// A list of UUIDs.
-	SecurityGroups *[]string `json:"securityGroups,omitempty"`
+	SecurityGroups UpdateNicPayloadGetSecurityGroupsAttributeType `json:"securityGroups,omitempty"`
 }
 
 // NewUpdateNicPayload instantiates a new UpdateNicPayload object
@@ -49,181 +150,136 @@ func NewUpdateNicPayloadWithDefaults() *UpdateNicPayload {
 }
 
 // GetAllowedAddresses returns the AllowedAddresses field value if set, zero value otherwise.
-func (o *UpdateNicPayload) GetAllowedAddresses() *[]AllowedAddressesInner {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		var ret *[]AllowedAddressesInner
-		return ret
-	}
-	return o.AllowedAddresses
+func (o *UpdateNicPayload) GetAllowedAddresses() (res UpdateNicPayloadGetAllowedAddressesRetType) {
+	res, _ = o.GetAllowedAddressesOk()
+	return
 }
 
 // GetAllowedAddressesOk returns a tuple with the AllowedAddresses field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNicPayload) GetAllowedAddressesOk() (*[]AllowedAddressesInner, bool) {
-	if o == nil || IsNil(o.AllowedAddresses) {
-		return nil, false
-	}
-	return o.AllowedAddresses, true
+func (o *UpdateNicPayload) GetAllowedAddressesOk() (ret UpdateNicPayloadGetAllowedAddressesRetType, ok bool) {
+	return getUpdateNicPayloadGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses)
 }
 
 // HasAllowedAddresses returns a boolean if a field has been set.
 func (o *UpdateNicPayload) HasAllowedAddresses() bool {
-	if o != nil && !IsNil(o.AllowedAddresses) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetAllowedAddressesOk()
+	return ok
 }
 
 // SetAllowedAddresses gets a reference to the given []AllowedAddressesInner and assigns it to the AllowedAddresses field.
-func (o *UpdateNicPayload) SetAllowedAddresses(v *[]AllowedAddressesInner) {
-	o.AllowedAddresses = v
+func (o *UpdateNicPayload) SetAllowedAddresses(v UpdateNicPayloadGetAllowedAddressesRetType) {
+	setUpdateNicPayloadGetAllowedAddressesAttributeType(&o.AllowedAddresses, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateNicPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateNicPayload) GetLabels() (res UpdateNicPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNicPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateNicPayload) GetLabelsOk() (ret UpdateNicPayloadGetLabelsRetType, ok bool) {
+	return getUpdateNicPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateNicPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateNicPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateNicPayload) SetLabels(v UpdateNicPayloadGetLabelsRetType) {
+	setUpdateNicPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *UpdateNicPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *UpdateNicPayload) GetName() (res UpdateNicPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNicPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *UpdateNicPayload) GetNameOk() (ret UpdateNicPayloadGetNameRetType, ok bool) {
+	return getUpdateNicPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *UpdateNicPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *UpdateNicPayload) SetName(v *string) {
-	o.Name = v
+func (o *UpdateNicPayload) SetName(v UpdateNicPayloadGetNameRetType) {
+	setUpdateNicPayloadGetNameAttributeType(&o.Name, v)
 }
 
 // GetNicSecurity returns the NicSecurity field value if set, zero value otherwise.
-func (o *UpdateNicPayload) GetNicSecurity() *bool {
-	if o == nil || IsNil(o.NicSecurity) {
-		var ret *bool
-		return ret
-	}
-	return o.NicSecurity
+func (o *UpdateNicPayload) GetNicSecurity() (res UpdateNicPayloadgetNicSecurityRetType) {
+	res, _ = o.GetNicSecurityOk()
+	return
 }
 
 // GetNicSecurityOk returns a tuple with the NicSecurity field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNicPayload) GetNicSecurityOk() (*bool, bool) {
-	if o == nil || IsNil(o.NicSecurity) {
-		return nil, false
-	}
-	return o.NicSecurity, true
+func (o *UpdateNicPayload) GetNicSecurityOk() (ret UpdateNicPayloadgetNicSecurityRetType, ok bool) {
+	return getUpdateNicPayloadgetNicSecurityAttributeTypeOk(o.NicSecurity)
 }
 
 // HasNicSecurity returns a boolean if a field has been set.
 func (o *UpdateNicPayload) HasNicSecurity() bool {
-	if o != nil && !IsNil(o.NicSecurity) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNicSecurityOk()
+	return ok
 }
 
 // SetNicSecurity gets a reference to the given bool and assigns it to the NicSecurity field.
-func (o *UpdateNicPayload) SetNicSecurity(v *bool) {
-	o.NicSecurity = v
+func (o *UpdateNicPayload) SetNicSecurity(v UpdateNicPayloadgetNicSecurityRetType) {
+	setUpdateNicPayloadgetNicSecurityAttributeType(&o.NicSecurity, v)
 }
 
 // GetSecurityGroups returns the SecurityGroups field value if set, zero value otherwise.
-func (o *UpdateNicPayload) GetSecurityGroups() *[]string {
-	if o == nil || IsNil(o.SecurityGroups) {
-		var ret *[]string
-		return ret
-	}
-	return o.SecurityGroups
+func (o *UpdateNicPayload) GetSecurityGroups() (res UpdateNicPayloadGetSecurityGroupsRetType) {
+	res, _ = o.GetSecurityGroupsOk()
+	return
 }
 
 // GetSecurityGroupsOk returns a tuple with the SecurityGroups field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateNicPayload) GetSecurityGroupsOk() (*[]string, bool) {
-	if o == nil || IsNil(o.SecurityGroups) {
-		return nil, false
-	}
-	return o.SecurityGroups, true
+func (o *UpdateNicPayload) GetSecurityGroupsOk() (ret UpdateNicPayloadGetSecurityGroupsRetType, ok bool) {
+	return getUpdateNicPayloadGetSecurityGroupsAttributeTypeOk(o.SecurityGroups)
 }
 
 // HasSecurityGroups returns a boolean if a field has been set.
 func (o *UpdateNicPayload) HasSecurityGroups() bool {
-	if o != nil && !IsNil(o.SecurityGroups) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSecurityGroupsOk()
+	return ok
 }
 
 // SetSecurityGroups gets a reference to the given []string and assigns it to the SecurityGroups field.
-func (o *UpdateNicPayload) SetSecurityGroups(v *[]string) {
-	o.SecurityGroups = v
+func (o *UpdateNicPayload) SetSecurityGroups(v UpdateNicPayloadGetSecurityGroupsRetType) {
+	setUpdateNicPayloadGetSecurityGroupsAttributeType(&o.SecurityGroups, v)
 }
 
 func (o UpdateNicPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.AllowedAddresses) {
-		toSerialize["allowedAddresses"] = o.AllowedAddresses
+	if val, ok := getUpdateNicPayloadGetAllowedAddressesAttributeTypeOk(o.AllowedAddresses); ok {
+		toSerialize["AllowedAddresses"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateNicPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getUpdateNicPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.NicSecurity) {
-		toSerialize["nicSecurity"] = o.NicSecurity
+	if val, ok := getUpdateNicPayloadgetNicSecurityAttributeTypeOk(o.NicSecurity); ok {
+		toSerialize["NicSecurity"] = val
 	}
-	if !IsNil(o.SecurityGroups) {
-		toSerialize["securityGroups"] = o.SecurityGroups
+	if val, ok := getUpdateNicPayloadGetSecurityGroupsAttributeTypeOk(o.SecurityGroups); ok {
+		toSerialize["SecurityGroups"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_public_ip_payload.go b/services/iaas/model_update_public_ip_payload.go
index 9ebe3c40f..ce8bda862 100644
--- a/services/iaas/model_update_public_ip_payload.go
+++ b/services/iaas/model_update_public_ip_payload.go
@@ -17,16 +17,103 @@ import (
 // checks if the UpdatePublicIPPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdatePublicIPPayload{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type UpdatePublicIPPayloadGetIdAttributeType = *string
+
+func getUpdatePublicIPPayloadGetIdAttributeTypeOk(arg UpdatePublicIPPayloadGetIdAttributeType) (ret UpdatePublicIPPayloadGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdatePublicIPPayloadGetIdAttributeType(arg *UpdatePublicIPPayloadGetIdAttributeType, val UpdatePublicIPPayloadGetIdRetType) {
+	*arg = &val
+}
+
+type UpdatePublicIPPayloadGetIdArgType = string
+type UpdatePublicIPPayloadGetIdRetType = string
+
+/*
+	types and functions for ip
+*/
+
+// isNotNullableString
+type UpdatePublicIPPayloadGetIpAttributeType = *string
+
+func getUpdatePublicIPPayloadGetIpAttributeTypeOk(arg UpdatePublicIPPayloadGetIpAttributeType) (ret UpdatePublicIPPayloadGetIpRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdatePublicIPPayloadGetIpAttributeType(arg *UpdatePublicIPPayloadGetIpAttributeType, val UpdatePublicIPPayloadGetIpRetType) {
+	*arg = &val
+}
+
+type UpdatePublicIPPayloadGetIpArgType = string
+type UpdatePublicIPPayloadGetIpRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdatePublicIPPayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdatePublicIPPayloadGetLabelsArgType = map[string]interface{}
+type UpdatePublicIPPayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdatePublicIPPayloadGetLabelsAttributeTypeOk(arg UpdatePublicIPPayloadGetLabelsAttributeType) (ret UpdatePublicIPPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdatePublicIPPayloadGetLabelsAttributeType(arg *UpdatePublicIPPayloadGetLabelsAttributeType, val UpdatePublicIPPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for networkInterface
+*/
+
+// isNullableString
+type UpdatePublicIPPayloadGetNetworkInterfaceAttributeType = *NullableString
+
+func getUpdatePublicIPPayloadGetNetworkInterfaceAttributeTypeOk(arg UpdatePublicIPPayloadGetNetworkInterfaceAttributeType) (ret UpdatePublicIPPayloadGetNetworkInterfaceRetType, ok bool) {
+	if arg == nil {
+		return nil, false
+	}
+	return arg.Get(), true
+}
+
+func setUpdatePublicIPPayloadGetNetworkInterfaceAttributeType(arg *UpdatePublicIPPayloadGetNetworkInterfaceAttributeType, val UpdatePublicIPPayloadGetNetworkInterfaceRetType) {
+	if IsNil(*arg) {
+		*arg = NewNullableString(val)
+	} else {
+		(*arg).Set(val)
+	}
+}
+
+type UpdatePublicIPPayloadGetNetworkInterfaceArgType = *string
+type UpdatePublicIPPayloadGetNetworkInterfaceRetType = *string
+
 // UpdatePublicIPPayload Object that represents a public IP.
 type UpdatePublicIPPayload struct {
 	// Universally Unique Identifier (UUID).
-	Id *string `json:"id,omitempty"`
+	Id UpdatePublicIPPayloadGetIdAttributeType `json:"id,omitempty"`
 	// Object that represents an IP address.
-	Ip *string `json:"ip,omitempty"`
+	Ip UpdatePublicIPPayloadGetIpAttributeType `json:"ip,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdatePublicIPPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// Universally Unique Identifier (UUID).
-	NetworkInterface *NullableString `json:"networkInterface,omitempty"`
+	NetworkInterface UpdatePublicIPPayloadGetNetworkInterfaceAttributeType `json:"networkInterface,omitempty"`
 }
 
 // NewUpdatePublicIPPayload instantiates a new UpdatePublicIPPayload object
@@ -47,166 +134,121 @@ func NewUpdatePublicIPPayloadWithDefaults() *UpdatePublicIPPayload {
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *UpdatePublicIPPayload) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *UpdatePublicIPPayload) GetId() (res UpdatePublicIPPayloadGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdatePublicIPPayload) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *UpdatePublicIPPayload) GetIdOk() (ret UpdatePublicIPPayloadGetIdRetType, ok bool) {
+	return getUpdatePublicIPPayloadGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *UpdatePublicIPPayload) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *UpdatePublicIPPayload) SetId(v *string) {
-	o.Id = v
+func (o *UpdatePublicIPPayload) SetId(v UpdatePublicIPPayloadGetIdRetType) {
+	setUpdatePublicIPPayloadGetIdAttributeType(&o.Id, v)
 }
 
 // GetIp returns the Ip field value if set, zero value otherwise.
-func (o *UpdatePublicIPPayload) GetIp() *string {
-	if o == nil || IsNil(o.Ip) {
-		var ret *string
-		return ret
-	}
-	return o.Ip
+func (o *UpdatePublicIPPayload) GetIp() (res UpdatePublicIPPayloadGetIpRetType) {
+	res, _ = o.GetIpOk()
+	return
 }
 
 // GetIpOk returns a tuple with the Ip field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdatePublicIPPayload) GetIpOk() (*string, bool) {
-	if o == nil || IsNil(o.Ip) {
-		return nil, false
-	}
-	return o.Ip, true
+func (o *UpdatePublicIPPayload) GetIpOk() (ret UpdatePublicIPPayloadGetIpRetType, ok bool) {
+	return getUpdatePublicIPPayloadGetIpAttributeTypeOk(o.Ip)
 }
 
 // HasIp returns a boolean if a field has been set.
 func (o *UpdatePublicIPPayload) HasIp() bool {
-	if o != nil && !IsNil(o.Ip) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIpOk()
+	return ok
 }
 
 // SetIp gets a reference to the given string and assigns it to the Ip field.
-func (o *UpdatePublicIPPayload) SetIp(v *string) {
-	o.Ip = v
+func (o *UpdatePublicIPPayload) SetIp(v UpdatePublicIPPayloadGetIpRetType) {
+	setUpdatePublicIPPayloadGetIpAttributeType(&o.Ip, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdatePublicIPPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdatePublicIPPayload) GetLabels() (res UpdatePublicIPPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdatePublicIPPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdatePublicIPPayload) GetLabelsOk() (ret UpdatePublicIPPayloadGetLabelsRetType, ok bool) {
+	return getUpdatePublicIPPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdatePublicIPPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdatePublicIPPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdatePublicIPPayload) SetLabels(v UpdatePublicIPPayloadGetLabelsRetType) {
+	setUpdatePublicIPPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetNetworkInterface returns the NetworkInterface field value if set, zero value otherwise (both if not set or set to explicit null).
-func (o *UpdatePublicIPPayload) GetNetworkInterface() *string {
-	if o == nil || IsNil(o.NetworkInterface) || IsNil(o.NetworkInterface.Get()) {
-		var ret *string
-		return ret
-	}
-	return o.NetworkInterface.Get()
+func (o *UpdatePublicIPPayload) GetNetworkInterface() (res UpdatePublicIPPayloadGetNetworkInterfaceRetType) {
+	res, _ = o.GetNetworkInterfaceOk()
+	return
 }
 
 // GetNetworkInterfaceOk returns a tuple with the NetworkInterface field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *UpdatePublicIPPayload) GetNetworkInterfaceOk() (*string, bool) {
-	if o == nil || IsNil(o.NetworkInterface) {
-		return nil, false
-	}
-	return o.NetworkInterface.Get(), o.NetworkInterface.IsSet()
+func (o *UpdatePublicIPPayload) GetNetworkInterfaceOk() (ret UpdatePublicIPPayloadGetNetworkInterfaceRetType, ok bool) {
+	return getUpdatePublicIPPayloadGetNetworkInterfaceAttributeTypeOk(o.NetworkInterface)
 }
 
 // HasNetworkInterface returns a boolean if a field has been set.
 func (o *UpdatePublicIPPayload) HasNetworkInterface() bool {
-	if o != nil && !IsNil(o.NetworkInterface) && o.NetworkInterface.IsSet() {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNetworkInterfaceOk()
+	return ok
 }
 
 // SetNetworkInterface gets a reference to the given string and assigns it to the NetworkInterface field.
-func (o *UpdatePublicIPPayload) SetNetworkInterface(v *string) {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Set(v)
+func (o *UpdatePublicIPPayload) SetNetworkInterface(v UpdatePublicIPPayloadGetNetworkInterfaceRetType) {
+	setUpdatePublicIPPayloadGetNetworkInterfaceAttributeType(&o.NetworkInterface, v)
 }
 
 // SetNetworkInterfaceNil sets the value for NetworkInterface to be an explicit nil
 func (o *UpdatePublicIPPayload) SetNetworkInterfaceNil() {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Set(nil)
+	o.NetworkInterface = nil
 }
 
 // UnsetNetworkInterface ensures that no value is present for NetworkInterface, not even an explicit nil
 func (o *UpdatePublicIPPayload) UnsetNetworkInterface() {
-	if IsNil(o.NetworkInterface) {
-		o.NetworkInterface = new(NullableString)
-	}
-	o.NetworkInterface.Unset()
+	o.NetworkInterface = nil
 }
 
 func (o UpdatePublicIPPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getUpdatePublicIPPayloadGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.Ip) {
-		toSerialize["ip"] = o.Ip
+	if val, ok := getUpdatePublicIPPayloadGetIpAttributeTypeOk(o.Ip); ok {
+		toSerialize["Ip"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdatePublicIPPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if o.NetworkInterface.IsSet() {
-		toSerialize["networkInterface"] = o.NetworkInterface.Get()
+	if val, ok := getUpdatePublicIPPayloadGetNetworkInterfaceAttributeTypeOk(o.NetworkInterface); ok {
+		toSerialize["NetworkInterface"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_security_group_payload.go b/services/iaas/model_update_security_group_payload.go
index 5c227458e..5d5266e56 100644
--- a/services/iaas/model_update_security_group_payload.go
+++ b/services/iaas/model_update_security_group_payload.go
@@ -17,14 +17,76 @@ import (
 // checks if the UpdateSecurityGroupPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateSecurityGroupPayload{}
 
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type UpdateSecurityGroupPayloadGetDescriptionAttributeType = *string
+
+func getUpdateSecurityGroupPayloadGetDescriptionAttributeTypeOk(arg UpdateSecurityGroupPayloadGetDescriptionAttributeType) (ret UpdateSecurityGroupPayloadGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateSecurityGroupPayloadGetDescriptionAttributeType(arg *UpdateSecurityGroupPayloadGetDescriptionAttributeType, val UpdateSecurityGroupPayloadGetDescriptionRetType) {
+	*arg = &val
+}
+
+type UpdateSecurityGroupPayloadGetDescriptionArgType = string
+type UpdateSecurityGroupPayloadGetDescriptionRetType = string
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateSecurityGroupPayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateSecurityGroupPayloadGetLabelsArgType = map[string]interface{}
+type UpdateSecurityGroupPayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateSecurityGroupPayloadGetLabelsAttributeTypeOk(arg UpdateSecurityGroupPayloadGetLabelsAttributeType) (ret UpdateSecurityGroupPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateSecurityGroupPayloadGetLabelsAttributeType(arg *UpdateSecurityGroupPayloadGetLabelsAttributeType, val UpdateSecurityGroupPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type UpdateSecurityGroupPayloadGetNameAttributeType = *string
+
+func getUpdateSecurityGroupPayloadGetNameAttributeTypeOk(arg UpdateSecurityGroupPayloadGetNameAttributeType) (ret UpdateSecurityGroupPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateSecurityGroupPayloadGetNameAttributeType(arg *UpdateSecurityGroupPayloadGetNameAttributeType, val UpdateSecurityGroupPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type UpdateSecurityGroupPayloadGetNameArgType = string
+type UpdateSecurityGroupPayloadGetNameRetType = string
+
 // UpdateSecurityGroupPayload Object that represents an update request body of a security group.
 type UpdateSecurityGroupPayload struct {
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description UpdateSecurityGroupPayloadGetDescriptionAttributeType `json:"description,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateSecurityGroupPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name UpdateSecurityGroupPayloadGetNameAttributeType `json:"name,omitempty"`
 }
 
 // NewUpdateSecurityGroupPayload instantiates a new UpdateSecurityGroupPayload object
@@ -45,111 +107,84 @@ func NewUpdateSecurityGroupPayloadWithDefaults() *UpdateSecurityGroupPayload {
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *UpdateSecurityGroupPayload) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *UpdateSecurityGroupPayload) GetDescription() (res UpdateSecurityGroupPayloadGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateSecurityGroupPayload) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *UpdateSecurityGroupPayload) GetDescriptionOk() (ret UpdateSecurityGroupPayloadGetDescriptionRetType, ok bool) {
+	return getUpdateSecurityGroupPayloadGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *UpdateSecurityGroupPayload) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *UpdateSecurityGroupPayload) SetDescription(v *string) {
-	o.Description = v
+func (o *UpdateSecurityGroupPayload) SetDescription(v UpdateSecurityGroupPayloadGetDescriptionRetType) {
+	setUpdateSecurityGroupPayloadGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateSecurityGroupPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateSecurityGroupPayload) GetLabels() (res UpdateSecurityGroupPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateSecurityGroupPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateSecurityGroupPayload) GetLabelsOk() (ret UpdateSecurityGroupPayloadGetLabelsRetType, ok bool) {
+	return getUpdateSecurityGroupPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateSecurityGroupPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateSecurityGroupPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateSecurityGroupPayload) SetLabels(v UpdateSecurityGroupPayloadGetLabelsRetType) {
+	setUpdateSecurityGroupPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *UpdateSecurityGroupPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *UpdateSecurityGroupPayload) GetName() (res UpdateSecurityGroupPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateSecurityGroupPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *UpdateSecurityGroupPayload) GetNameOk() (ret UpdateSecurityGroupPayloadGetNameRetType, ok bool) {
+	return getUpdateSecurityGroupPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *UpdateSecurityGroupPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *UpdateSecurityGroupPayload) SetName(v *string) {
-	o.Name = v
+func (o *UpdateSecurityGroupPayload) SetName(v UpdateSecurityGroupPayloadGetNameRetType) {
+	setUpdateSecurityGroupPayloadGetNameAttributeType(&o.Name, v)
 }
 
 func (o UpdateSecurityGroupPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getUpdateSecurityGroupPayloadGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateSecurityGroupPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getUpdateSecurityGroupPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_server_payload.go b/services/iaas/model_update_server_payload.go
index 0ebb041b5..e110c3e80 100644
--- a/services/iaas/model_update_server_payload.go
+++ b/services/iaas/model_update_server_payload.go
@@ -17,12 +17,53 @@ import (
 // checks if the UpdateServerPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateServerPayload{}
 
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateServerPayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateServerPayloadGetLabelsArgType = map[string]interface{}
+type UpdateServerPayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateServerPayloadGetLabelsAttributeTypeOk(arg UpdateServerPayloadGetLabelsAttributeType) (ret UpdateServerPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateServerPayloadGetLabelsAttributeType(arg *UpdateServerPayloadGetLabelsAttributeType, val UpdateServerPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type UpdateServerPayloadGetNameAttributeType = *string
+
+func getUpdateServerPayloadGetNameAttributeTypeOk(arg UpdateServerPayloadGetNameAttributeType) (ret UpdateServerPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateServerPayloadGetNameAttributeType(arg *UpdateServerPayloadGetNameAttributeType, val UpdateServerPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type UpdateServerPayloadGetNameArgType = string
+type UpdateServerPayloadGetNameRetType = string
+
 // UpdateServerPayload Object that represents an update request body of a server.
 type UpdateServerPayload struct {
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateServerPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a Server.
-	Name *string `json:"name,omitempty"`
+	Name UpdateServerPayloadGetNameAttributeType `json:"name,omitempty"`
 }
 
 // NewUpdateServerPayload instantiates a new UpdateServerPayload object
@@ -43,76 +84,58 @@ func NewUpdateServerPayloadWithDefaults() *UpdateServerPayload {
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateServerPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateServerPayload) GetLabels() (res UpdateServerPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateServerPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateServerPayload) GetLabelsOk() (ret UpdateServerPayloadGetLabelsRetType, ok bool) {
+	return getUpdateServerPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateServerPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateServerPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateServerPayload) SetLabels(v UpdateServerPayloadGetLabelsRetType) {
+	setUpdateServerPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *UpdateServerPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *UpdateServerPayload) GetName() (res UpdateServerPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateServerPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *UpdateServerPayload) GetNameOk() (ret UpdateServerPayloadGetNameRetType, ok bool) {
+	return getUpdateServerPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *UpdateServerPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *UpdateServerPayload) SetName(v *string) {
-	o.Name = v
+func (o *UpdateServerPayload) SetName(v UpdateServerPayloadGetNameRetType) {
+	setUpdateServerPayloadGetNameAttributeType(&o.Name, v)
 }
 
 func (o UpdateServerPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateServerPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getUpdateServerPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_snapshot_payload.go b/services/iaas/model_update_snapshot_payload.go
index 71e46f850..b370f6ccb 100644
--- a/services/iaas/model_update_snapshot_payload.go
+++ b/services/iaas/model_update_snapshot_payload.go
@@ -17,12 +17,53 @@ import (
 // checks if the UpdateSnapshotPayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateSnapshotPayload{}
 
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateSnapshotPayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateSnapshotPayloadGetLabelsArgType = map[string]interface{}
+type UpdateSnapshotPayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateSnapshotPayloadGetLabelsAttributeTypeOk(arg UpdateSnapshotPayloadGetLabelsAttributeType) (ret UpdateSnapshotPayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateSnapshotPayloadGetLabelsAttributeType(arg *UpdateSnapshotPayloadGetLabelsAttributeType, val UpdateSnapshotPayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type UpdateSnapshotPayloadGetNameAttributeType = *string
+
+func getUpdateSnapshotPayloadGetNameAttributeTypeOk(arg UpdateSnapshotPayloadGetNameAttributeType) (ret UpdateSnapshotPayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateSnapshotPayloadGetNameAttributeType(arg *UpdateSnapshotPayloadGetNameAttributeType, val UpdateSnapshotPayloadGetNameRetType) {
+	*arg = &val
+}
+
+type UpdateSnapshotPayloadGetNameArgType = string
+type UpdateSnapshotPayloadGetNameRetType = string
+
 // UpdateSnapshotPayload Object that represents an update request body of a snapshot.
 type UpdateSnapshotPayload struct {
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateSnapshotPayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name UpdateSnapshotPayloadGetNameAttributeType `json:"name,omitempty"`
 }
 
 // NewUpdateSnapshotPayload instantiates a new UpdateSnapshotPayload object
@@ -43,76 +84,58 @@ func NewUpdateSnapshotPayloadWithDefaults() *UpdateSnapshotPayload {
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateSnapshotPayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateSnapshotPayload) GetLabels() (res UpdateSnapshotPayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateSnapshotPayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateSnapshotPayload) GetLabelsOk() (ret UpdateSnapshotPayloadGetLabelsRetType, ok bool) {
+	return getUpdateSnapshotPayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateSnapshotPayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateSnapshotPayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateSnapshotPayload) SetLabels(v UpdateSnapshotPayloadGetLabelsRetType) {
+	setUpdateSnapshotPayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *UpdateSnapshotPayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *UpdateSnapshotPayload) GetName() (res UpdateSnapshotPayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateSnapshotPayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *UpdateSnapshotPayload) GetNameOk() (ret UpdateSnapshotPayloadGetNameRetType, ok bool) {
+	return getUpdateSnapshotPayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *UpdateSnapshotPayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *UpdateSnapshotPayload) SetName(v *string) {
-	o.Name = v
+func (o *UpdateSnapshotPayload) SetName(v UpdateSnapshotPayloadGetNameRetType) {
+	setUpdateSnapshotPayloadGetNameAttributeType(&o.Name, v)
 }
 
 func (o UpdateSnapshotPayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateSnapshotPayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getUpdateSnapshotPayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_update_volume_payload.go b/services/iaas/model_update_volume_payload.go
index 4da4cb547..c26af8b0c 100644
--- a/services/iaas/model_update_volume_payload.go
+++ b/services/iaas/model_update_volume_payload.go
@@ -17,17 +17,119 @@ import (
 // checks if the UpdateVolumePayload type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &UpdateVolumePayload{}
 
+/*
+	types and functions for bootable
+*/
+
+// isBoolean
+type UpdateVolumePayloadgetBootableAttributeType = *bool
+type UpdateVolumePayloadgetBootableArgType = bool
+type UpdateVolumePayloadgetBootableRetType = bool
+
+func getUpdateVolumePayloadgetBootableAttributeTypeOk(arg UpdateVolumePayloadgetBootableAttributeType) (ret UpdateVolumePayloadgetBootableRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateVolumePayloadgetBootableAttributeType(arg *UpdateVolumePayloadgetBootableAttributeType, val UpdateVolumePayloadgetBootableRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type UpdateVolumePayloadGetDescriptionAttributeType = *string
+
+func getUpdateVolumePayloadGetDescriptionAttributeTypeOk(arg UpdateVolumePayloadGetDescriptionAttributeType) (ret UpdateVolumePayloadGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateVolumePayloadGetDescriptionAttributeType(arg *UpdateVolumePayloadGetDescriptionAttributeType, val UpdateVolumePayloadGetDescriptionRetType) {
+	*arg = &val
+}
+
+type UpdateVolumePayloadGetDescriptionArgType = string
+type UpdateVolumePayloadGetDescriptionRetType = string
+
+/*
+	types and functions for imageConfig
+*/
+
+// isModel
+type UpdateVolumePayloadGetImageConfigAttributeType = *ImageConfig
+type UpdateVolumePayloadGetImageConfigArgType = ImageConfig
+type UpdateVolumePayloadGetImageConfigRetType = ImageConfig
+
+func getUpdateVolumePayloadGetImageConfigAttributeTypeOk(arg UpdateVolumePayloadGetImageConfigAttributeType) (ret UpdateVolumePayloadGetImageConfigRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateVolumePayloadGetImageConfigAttributeType(arg *UpdateVolumePayloadGetImageConfigAttributeType, val UpdateVolumePayloadGetImageConfigRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type UpdateVolumePayloadGetLabelsAttributeType = *map[string]interface{}
+type UpdateVolumePayloadGetLabelsArgType = map[string]interface{}
+type UpdateVolumePayloadGetLabelsRetType = map[string]interface{}
+
+func getUpdateVolumePayloadGetLabelsAttributeTypeOk(arg UpdateVolumePayloadGetLabelsAttributeType) (ret UpdateVolumePayloadGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateVolumePayloadGetLabelsAttributeType(arg *UpdateVolumePayloadGetLabelsAttributeType, val UpdateVolumePayloadGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type UpdateVolumePayloadGetNameAttributeType = *string
+
+func getUpdateVolumePayloadGetNameAttributeTypeOk(arg UpdateVolumePayloadGetNameAttributeType) (ret UpdateVolumePayloadGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setUpdateVolumePayloadGetNameAttributeType(arg *UpdateVolumePayloadGetNameAttributeType, val UpdateVolumePayloadGetNameRetType) {
+	*arg = &val
+}
+
+type UpdateVolumePayloadGetNameArgType = string
+type UpdateVolumePayloadGetNameRetType = string
+
 // UpdateVolumePayload Object that represents an update request body of a  volume.
 type UpdateVolumePayload struct {
 	// Indicates if a volume is bootable.
-	Bootable *bool `json:"bootable,omitempty"`
+	Bootable UpdateVolumePayloadgetBootableAttributeType `json:"bootable,omitempty"`
 	// Description Object. Allows string up to 127 Characters.
-	Description *string      `json:"description,omitempty"`
-	ImageConfig *ImageConfig `json:"imageConfig,omitempty"`
+	Description UpdateVolumePayloadGetDescriptionAttributeType `json:"description,omitempty"`
+	ImageConfig UpdateVolumePayloadGetImageConfigAttributeType `json:"imageConfig,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels UpdateVolumePayloadGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name UpdateVolumePayloadGetNameAttributeType `json:"name,omitempty"`
 }
 
 // NewUpdateVolumePayload instantiates a new UpdateVolumePayload object
@@ -48,181 +150,136 @@ func NewUpdateVolumePayloadWithDefaults() *UpdateVolumePayload {
 }
 
 // GetBootable returns the Bootable field value if set, zero value otherwise.
-func (o *UpdateVolumePayload) GetBootable() *bool {
-	if o == nil || IsNil(o.Bootable) {
-		var ret *bool
-		return ret
-	}
-	return o.Bootable
+func (o *UpdateVolumePayload) GetBootable() (res UpdateVolumePayloadgetBootableRetType) {
+	res, _ = o.GetBootableOk()
+	return
 }
 
 // GetBootableOk returns a tuple with the Bootable field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateVolumePayload) GetBootableOk() (*bool, bool) {
-	if o == nil || IsNil(o.Bootable) {
-		return nil, false
-	}
-	return o.Bootable, true
+func (o *UpdateVolumePayload) GetBootableOk() (ret UpdateVolumePayloadgetBootableRetType, ok bool) {
+	return getUpdateVolumePayloadgetBootableAttributeTypeOk(o.Bootable)
 }
 
 // HasBootable returns a boolean if a field has been set.
 func (o *UpdateVolumePayload) HasBootable() bool {
-	if o != nil && !IsNil(o.Bootable) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetBootableOk()
+	return ok
 }
 
 // SetBootable gets a reference to the given bool and assigns it to the Bootable field.
-func (o *UpdateVolumePayload) SetBootable(v *bool) {
-	o.Bootable = v
+func (o *UpdateVolumePayload) SetBootable(v UpdateVolumePayloadgetBootableRetType) {
+	setUpdateVolumePayloadgetBootableAttributeType(&o.Bootable, v)
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *UpdateVolumePayload) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *UpdateVolumePayload) GetDescription() (res UpdateVolumePayloadGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateVolumePayload) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *UpdateVolumePayload) GetDescriptionOk() (ret UpdateVolumePayloadGetDescriptionRetType, ok bool) {
+	return getUpdateVolumePayloadGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *UpdateVolumePayload) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *UpdateVolumePayload) SetDescription(v *string) {
-	o.Description = v
+func (o *UpdateVolumePayload) SetDescription(v UpdateVolumePayloadGetDescriptionRetType) {
+	setUpdateVolumePayloadGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetImageConfig returns the ImageConfig field value if set, zero value otherwise.
-func (o *UpdateVolumePayload) GetImageConfig() *ImageConfig {
-	if o == nil || IsNil(o.ImageConfig) {
-		var ret *ImageConfig
-		return ret
-	}
-	return o.ImageConfig
+func (o *UpdateVolumePayload) GetImageConfig() (res UpdateVolumePayloadGetImageConfigRetType) {
+	res, _ = o.GetImageConfigOk()
+	return
 }
 
 // GetImageConfigOk returns a tuple with the ImageConfig field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateVolumePayload) GetImageConfigOk() (*ImageConfig, bool) {
-	if o == nil || IsNil(o.ImageConfig) {
-		return nil, false
-	}
-	return o.ImageConfig, true
+func (o *UpdateVolumePayload) GetImageConfigOk() (ret UpdateVolumePayloadGetImageConfigRetType, ok bool) {
+	return getUpdateVolumePayloadGetImageConfigAttributeTypeOk(o.ImageConfig)
 }
 
 // HasImageConfig returns a boolean if a field has been set.
 func (o *UpdateVolumePayload) HasImageConfig() bool {
-	if o != nil && !IsNil(o.ImageConfig) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetImageConfigOk()
+	return ok
 }
 
 // SetImageConfig gets a reference to the given ImageConfig and assigns it to the ImageConfig field.
-func (o *UpdateVolumePayload) SetImageConfig(v *ImageConfig) {
-	o.ImageConfig = v
+func (o *UpdateVolumePayload) SetImageConfig(v UpdateVolumePayloadGetImageConfigRetType) {
+	setUpdateVolumePayloadGetImageConfigAttributeType(&o.ImageConfig, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *UpdateVolumePayload) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *UpdateVolumePayload) GetLabels() (res UpdateVolumePayloadGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateVolumePayload) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *UpdateVolumePayload) GetLabelsOk() (ret UpdateVolumePayloadGetLabelsRetType, ok bool) {
+	return getUpdateVolumePayloadGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *UpdateVolumePayload) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *UpdateVolumePayload) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *UpdateVolumePayload) SetLabels(v UpdateVolumePayloadGetLabelsRetType) {
+	setUpdateVolumePayloadGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *UpdateVolumePayload) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *UpdateVolumePayload) GetName() (res UpdateVolumePayloadGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *UpdateVolumePayload) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *UpdateVolumePayload) GetNameOk() (ret UpdateVolumePayloadGetNameRetType, ok bool) {
+	return getUpdateVolumePayloadGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *UpdateVolumePayload) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *UpdateVolumePayload) SetName(v *string) {
-	o.Name = v
+func (o *UpdateVolumePayload) SetName(v UpdateVolumePayloadGetNameRetType) {
+	setUpdateVolumePayloadGetNameAttributeType(&o.Name, v)
 }
 
 func (o UpdateVolumePayload) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Bootable) {
-		toSerialize["bootable"] = o.Bootable
+	if val, ok := getUpdateVolumePayloadgetBootableAttributeTypeOk(o.Bootable); ok {
+		toSerialize["Bootable"] = val
 	}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getUpdateVolumePayloadGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
 	}
-	if !IsNil(o.ImageConfig) {
-		toSerialize["imageConfig"] = o.ImageConfig
+	if val, ok := getUpdateVolumePayloadGetImageConfigAttributeTypeOk(o.ImageConfig); ok {
+		toSerialize["ImageConfig"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getUpdateVolumePayloadGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getUpdateVolumePayloadGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_volume.go b/services/iaas/model_volume.go
index 70edc95bd..c451df5e2 100644
--- a/services/iaas/model_volume.go
+++ b/services/iaas/model_volume.go
@@ -18,35 +18,322 @@ import (
 // checks if the Volume type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &Volume{}
 
+/*
+	types and functions for availabilityZone
+*/
+
+// isNotNullableString
+type VolumeGetAvailabilityZoneAttributeType = *string
+
+func getVolumeGetAvailabilityZoneAttributeTypeOk(arg VolumeGetAvailabilityZoneAttributeType) (ret VolumeGetAvailabilityZoneRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetAvailabilityZoneAttributeType(arg *VolumeGetAvailabilityZoneAttributeType, val VolumeGetAvailabilityZoneRetType) {
+	*arg = &val
+}
+
+type VolumeGetAvailabilityZoneArgType = string
+type VolumeGetAvailabilityZoneRetType = string
+
+/*
+	types and functions for bootable
+*/
+
+// isBoolean
+type VolumegetBootableAttributeType = *bool
+type VolumegetBootableArgType = bool
+type VolumegetBootableRetType = bool
+
+func getVolumegetBootableAttributeTypeOk(arg VolumegetBootableAttributeType) (ret VolumegetBootableRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumegetBootableAttributeType(arg *VolumegetBootableAttributeType, val VolumegetBootableRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for createdAt
+*/
+
+// isDateTime
+type VolumeGetCreatedAtAttributeType = *time.Time
+type VolumeGetCreatedAtArgType = time.Time
+type VolumeGetCreatedAtRetType = time.Time
+
+func getVolumeGetCreatedAtAttributeTypeOk(arg VolumeGetCreatedAtAttributeType) (ret VolumeGetCreatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetCreatedAtAttributeType(arg *VolumeGetCreatedAtAttributeType, val VolumeGetCreatedAtRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type VolumeGetDescriptionAttributeType = *string
+
+func getVolumeGetDescriptionAttributeTypeOk(arg VolumeGetDescriptionAttributeType) (ret VolumeGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetDescriptionAttributeType(arg *VolumeGetDescriptionAttributeType, val VolumeGetDescriptionRetType) {
+	*arg = &val
+}
+
+type VolumeGetDescriptionArgType = string
+type VolumeGetDescriptionRetType = string
+
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type VolumeGetIdAttributeType = *string
+
+func getVolumeGetIdAttributeTypeOk(arg VolumeGetIdAttributeType) (ret VolumeGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetIdAttributeType(arg *VolumeGetIdAttributeType, val VolumeGetIdRetType) {
+	*arg = &val
+}
+
+type VolumeGetIdArgType = string
+type VolumeGetIdRetType = string
+
+/*
+	types and functions for imageConfig
+*/
+
+// isModel
+type VolumeGetImageConfigAttributeType = *ImageConfig
+type VolumeGetImageConfigArgType = ImageConfig
+type VolumeGetImageConfigRetType = ImageConfig
+
+func getVolumeGetImageConfigAttributeTypeOk(arg VolumeGetImageConfigAttributeType) (ret VolumeGetImageConfigRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetImageConfigAttributeType(arg *VolumeGetImageConfigAttributeType, val VolumeGetImageConfigRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type VolumeGetLabelsAttributeType = *map[string]interface{}
+type VolumeGetLabelsArgType = map[string]interface{}
+type VolumeGetLabelsRetType = map[string]interface{}
+
+func getVolumeGetLabelsAttributeTypeOk(arg VolumeGetLabelsAttributeType) (ret VolumeGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetLabelsAttributeType(arg *VolumeGetLabelsAttributeType, val VolumeGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type VolumeGetNameAttributeType = *string
+
+func getVolumeGetNameAttributeTypeOk(arg VolumeGetNameAttributeType) (ret VolumeGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetNameAttributeType(arg *VolumeGetNameAttributeType, val VolumeGetNameRetType) {
+	*arg = &val
+}
+
+type VolumeGetNameArgType = string
+type VolumeGetNameRetType = string
+
+/*
+	types and functions for performanceClass
+*/
+
+// isNotNullableString
+type VolumeGetPerformanceClassAttributeType = *string
+
+func getVolumeGetPerformanceClassAttributeTypeOk(arg VolumeGetPerformanceClassAttributeType) (ret VolumeGetPerformanceClassRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetPerformanceClassAttributeType(arg *VolumeGetPerformanceClassAttributeType, val VolumeGetPerformanceClassRetType) {
+	*arg = &val
+}
+
+type VolumeGetPerformanceClassArgType = string
+type VolumeGetPerformanceClassRetType = string
+
+/*
+	types and functions for serverId
+*/
+
+// isNotNullableString
+type VolumeGetServerIdAttributeType = *string
+
+func getVolumeGetServerIdAttributeTypeOk(arg VolumeGetServerIdAttributeType) (ret VolumeGetServerIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetServerIdAttributeType(arg *VolumeGetServerIdAttributeType, val VolumeGetServerIdRetType) {
+	*arg = &val
+}
+
+type VolumeGetServerIdArgType = string
+type VolumeGetServerIdRetType = string
+
+/*
+	types and functions for size
+*/
+
+// isLong
+type VolumeGetSizeAttributeType = *int64
+type VolumeGetSizeArgType = int64
+type VolumeGetSizeRetType = int64
+
+func getVolumeGetSizeAttributeTypeOk(arg VolumeGetSizeAttributeType) (ret VolumeGetSizeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetSizeAttributeType(arg *VolumeGetSizeAttributeType, val VolumeGetSizeRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for source
+*/
+
+// isModel
+type VolumeGetSourceAttributeType = *VolumeSource
+type VolumeGetSourceArgType = VolumeSource
+type VolumeGetSourceRetType = VolumeSource
+
+func getVolumeGetSourceAttributeTypeOk(arg VolumeGetSourceAttributeType) (ret VolumeGetSourceRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetSourceAttributeType(arg *VolumeGetSourceAttributeType, val VolumeGetSourceRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for status
+*/
+
+// isNotNullableString
+type VolumeGetStatusAttributeType = *string
+
+func getVolumeGetStatusAttributeTypeOk(arg VolumeGetStatusAttributeType) (ret VolumeGetStatusRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetStatusAttributeType(arg *VolumeGetStatusAttributeType, val VolumeGetStatusRetType) {
+	*arg = &val
+}
+
+type VolumeGetStatusArgType = string
+type VolumeGetStatusRetType = string
+
+/*
+	types and functions for updatedAt
+*/
+
+// isDateTime
+type VolumeGetUpdatedAtAttributeType = *time.Time
+type VolumeGetUpdatedAtArgType = time.Time
+type VolumeGetUpdatedAtRetType = time.Time
+
+func getVolumeGetUpdatedAtAttributeTypeOk(arg VolumeGetUpdatedAtAttributeType) (ret VolumeGetUpdatedAtRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeGetUpdatedAtAttributeType(arg *VolumeGetUpdatedAtAttributeType, val VolumeGetUpdatedAtRetType) {
+	*arg = &val
+}
+
 // Volume Object that represents a volume and its parameters. Used for Creating and returning (get/list).
 type Volume struct {
 	// Object that represents an availability zone.
 	// REQUIRED
-	AvailabilityZone *string `json:"availabilityZone"`
+	AvailabilityZone VolumeGetAvailabilityZoneAttributeType `json:"availabilityZone"`
 	// Indicates if a volume is bootable.
-	Bootable *bool `json:"bootable,omitempty"`
+	Bootable VolumegetBootableAttributeType `json:"bootable,omitempty"`
 	// Date-time when resource was created.
-	CreatedAt *time.Time `json:"createdAt,omitempty"`
+	CreatedAt VolumeGetCreatedAtAttributeType `json:"createdAt,omitempty"`
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description VolumeGetDescriptionAttributeType `json:"description,omitempty"`
 	// Universally Unique Identifier (UUID).
-	Id          *string      `json:"id,omitempty"`
-	ImageConfig *ImageConfig `json:"imageConfig,omitempty"`
+	Id          VolumeGetIdAttributeType          `json:"id,omitempty"`
+	ImageConfig VolumeGetImageConfigAttributeType `json:"imageConfig,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels VolumeGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	Name *string `json:"name,omitempty"`
+	Name VolumeGetNameAttributeType `json:"name,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
-	PerformanceClass *string `json:"performanceClass,omitempty"`
+	PerformanceClass VolumeGetPerformanceClassAttributeType `json:"performanceClass,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ServerId *string `json:"serverId,omitempty"`
+	ServerId VolumeGetServerIdAttributeType `json:"serverId,omitempty"`
 	// Size in Gigabyte.
-	Size   *int64        `json:"size,omitempty"`
-	Source *VolumeSource `json:"source,omitempty"`
+	Size   VolumeGetSizeAttributeType   `json:"size,omitempty"`
+	Source VolumeGetSourceAttributeType `json:"source,omitempty"`
 	// The status of a volume object. Possible values: `ATTACHED`, `ATTACHING`, `AVAILABLE`, `AWAITING-TRANSFER`, `BACKING-UP`, `CREATING`, `DELETED`, `DELETING`, `DETACHING`, `DOWNLOADING`, `ERROR`, `ERROR_BACKING-UP`, `ERROR_DELETING`, `ERROR_RESIZING`, `ERROR_RESTORING-BACKUP`, `MAINTENANCE`, `RESERVED`, `RESIZING`, `RESTORING-BACKUP`, `RETYPING`, `UPLOADING`.
-	Status *string `json:"status,omitempty"`
+	Status VolumeGetStatusAttributeType `json:"status,omitempty"`
 	// Date-time when resource was last updated.
-	UpdatedAt *time.Time `json:"updatedAt,omitempty"`
+	UpdatedAt VolumeGetUpdatedAtAttributeType `json:"updatedAt,omitempty"`
 }
 
 type _Volume Volume
@@ -55,9 +342,9 @@ type _Volume Volume
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewVolume(availabilityZone *string) *Volume {
+func NewVolume(availabilityZone VolumeGetAvailabilityZoneArgType) *Volume {
 	this := Volume{}
-	this.AvailabilityZone = availabilityZone
+	setVolumeGetAvailabilityZoneAttributeType(&this.AvailabilityZone, availabilityZone)
 	return &this
 }
 
@@ -70,486 +357,364 @@ func NewVolumeWithDefaults() *Volume {
 }
 
 // GetAvailabilityZone returns the AvailabilityZone field value
-func (o *Volume) GetAvailabilityZone() *string {
-	if o == nil || IsNil(o.AvailabilityZone) {
-		var ret *string
-		return ret
-	}
-
-	return o.AvailabilityZone
+func (o *Volume) GetAvailabilityZone() (ret VolumeGetAvailabilityZoneRetType) {
+	ret, _ = o.GetAvailabilityZoneOk()
+	return ret
 }
 
 // GetAvailabilityZoneOk returns a tuple with the AvailabilityZone field value
 // and a boolean to check if the value has been set.
-func (o *Volume) GetAvailabilityZoneOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.AvailabilityZone, true
+func (o *Volume) GetAvailabilityZoneOk() (ret VolumeGetAvailabilityZoneRetType, ok bool) {
+	return getVolumeGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone)
 }
 
 // SetAvailabilityZone sets field value
-func (o *Volume) SetAvailabilityZone(v *string) {
-	o.AvailabilityZone = v
+func (o *Volume) SetAvailabilityZone(v VolumeGetAvailabilityZoneRetType) {
+	setVolumeGetAvailabilityZoneAttributeType(&o.AvailabilityZone, v)
 }
 
 // GetBootable returns the Bootable field value if set, zero value otherwise.
-func (o *Volume) GetBootable() *bool {
-	if o == nil || IsNil(o.Bootable) {
-		var ret *bool
-		return ret
-	}
-	return o.Bootable
+func (o *Volume) GetBootable() (res VolumegetBootableRetType) {
+	res, _ = o.GetBootableOk()
+	return
 }
 
 // GetBootableOk returns a tuple with the Bootable field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetBootableOk() (*bool, bool) {
-	if o == nil || IsNil(o.Bootable) {
-		return nil, false
-	}
-	return o.Bootable, true
+func (o *Volume) GetBootableOk() (ret VolumegetBootableRetType, ok bool) {
+	return getVolumegetBootableAttributeTypeOk(o.Bootable)
 }
 
 // HasBootable returns a boolean if a field has been set.
 func (o *Volume) HasBootable() bool {
-	if o != nil && !IsNil(o.Bootable) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetBootableOk()
+	return ok
 }
 
 // SetBootable gets a reference to the given bool and assigns it to the Bootable field.
-func (o *Volume) SetBootable(v *bool) {
-	o.Bootable = v
+func (o *Volume) SetBootable(v VolumegetBootableRetType) {
+	setVolumegetBootableAttributeType(&o.Bootable, v)
 }
 
 // GetCreatedAt returns the CreatedAt field value if set, zero value otherwise.
-func (o *Volume) GetCreatedAt() *time.Time {
-	if o == nil || IsNil(o.CreatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.CreatedAt
+func (o *Volume) GetCreatedAt() (res VolumeGetCreatedAtRetType) {
+	res, _ = o.GetCreatedAtOk()
+	return
 }
 
 // GetCreatedAtOk returns a tuple with the CreatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetCreatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.CreatedAt) {
-		return nil, false
-	}
-	return o.CreatedAt, true
+func (o *Volume) GetCreatedAtOk() (ret VolumeGetCreatedAtRetType, ok bool) {
+	return getVolumeGetCreatedAtAttributeTypeOk(o.CreatedAt)
 }
 
 // HasCreatedAt returns a boolean if a field has been set.
 func (o *Volume) HasCreatedAt() bool {
-	if o != nil && !IsNil(o.CreatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetCreatedAtOk()
+	return ok
 }
 
 // SetCreatedAt gets a reference to the given time.Time and assigns it to the CreatedAt field.
-func (o *Volume) SetCreatedAt(v *time.Time) {
-	o.CreatedAt = v
+func (o *Volume) SetCreatedAt(v VolumeGetCreatedAtRetType) {
+	setVolumeGetCreatedAtAttributeType(&o.CreatedAt, v)
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *Volume) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *Volume) GetDescription() (res VolumeGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *Volume) GetDescriptionOk() (ret VolumeGetDescriptionRetType, ok bool) {
+	return getVolumeGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *Volume) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *Volume) SetDescription(v *string) {
-	o.Description = v
+func (o *Volume) SetDescription(v VolumeGetDescriptionRetType) {
+	setVolumeGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetId returns the Id field value if set, zero value otherwise.
-func (o *Volume) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-	return o.Id
+func (o *Volume) GetId() (res VolumeGetIdRetType) {
+	res, _ = o.GetIdOk()
+	return
 }
 
 // GetIdOk returns a tuple with the Id field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetIdOk() (*string, bool) {
-	if o == nil || IsNil(o.Id) {
-		return nil, false
-	}
-	return o.Id, true
+func (o *Volume) GetIdOk() (ret VolumeGetIdRetType, ok bool) {
+	return getVolumeGetIdAttributeTypeOk(o.Id)
 }
 
 // HasId returns a boolean if a field has been set.
 func (o *Volume) HasId() bool {
-	if o != nil && !IsNil(o.Id) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIdOk()
+	return ok
 }
 
 // SetId gets a reference to the given string and assigns it to the Id field.
-func (o *Volume) SetId(v *string) {
-	o.Id = v
+func (o *Volume) SetId(v VolumeGetIdRetType) {
+	setVolumeGetIdAttributeType(&o.Id, v)
 }
 
 // GetImageConfig returns the ImageConfig field value if set, zero value otherwise.
-func (o *Volume) GetImageConfig() *ImageConfig {
-	if o == nil || IsNil(o.ImageConfig) {
-		var ret *ImageConfig
-		return ret
-	}
-	return o.ImageConfig
+func (o *Volume) GetImageConfig() (res VolumeGetImageConfigRetType) {
+	res, _ = o.GetImageConfigOk()
+	return
 }
 
 // GetImageConfigOk returns a tuple with the ImageConfig field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetImageConfigOk() (*ImageConfig, bool) {
-	if o == nil || IsNil(o.ImageConfig) {
-		return nil, false
-	}
-	return o.ImageConfig, true
+func (o *Volume) GetImageConfigOk() (ret VolumeGetImageConfigRetType, ok bool) {
+	return getVolumeGetImageConfigAttributeTypeOk(o.ImageConfig)
 }
 
 // HasImageConfig returns a boolean if a field has been set.
 func (o *Volume) HasImageConfig() bool {
-	if o != nil && !IsNil(o.ImageConfig) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetImageConfigOk()
+	return ok
 }
 
 // SetImageConfig gets a reference to the given ImageConfig and assigns it to the ImageConfig field.
-func (o *Volume) SetImageConfig(v *ImageConfig) {
-	o.ImageConfig = v
+func (o *Volume) SetImageConfig(v VolumeGetImageConfigRetType) {
+	setVolumeGetImageConfigAttributeType(&o.ImageConfig, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *Volume) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *Volume) GetLabels() (res VolumeGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *Volume) GetLabelsOk() (ret VolumeGetLabelsRetType, ok bool) {
+	return getVolumeGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *Volume) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *Volume) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *Volume) SetLabels(v VolumeGetLabelsRetType) {
+	setVolumeGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value if set, zero value otherwise.
-func (o *Volume) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-	return o.Name
+func (o *Volume) GetName() (res VolumeGetNameRetType) {
+	res, _ = o.GetNameOk()
+	return
 }
 
 // GetNameOk returns a tuple with the Name field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetNameOk() (*string, bool) {
-	if o == nil || IsNil(o.Name) {
-		return nil, false
-	}
-	return o.Name, true
+func (o *Volume) GetNameOk() (ret VolumeGetNameRetType, ok bool) {
+	return getVolumeGetNameAttributeTypeOk(o.Name)
 }
 
 // HasName returns a boolean if a field has been set.
 func (o *Volume) HasName() bool {
-	if o != nil && !IsNil(o.Name) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetNameOk()
+	return ok
 }
 
 // SetName gets a reference to the given string and assigns it to the Name field.
-func (o *Volume) SetName(v *string) {
-	o.Name = v
+func (o *Volume) SetName(v VolumeGetNameRetType) {
+	setVolumeGetNameAttributeType(&o.Name, v)
 }
 
 // GetPerformanceClass returns the PerformanceClass field value if set, zero value otherwise.
-func (o *Volume) GetPerformanceClass() *string {
-	if o == nil || IsNil(o.PerformanceClass) {
-		var ret *string
-		return ret
-	}
-	return o.PerformanceClass
+func (o *Volume) GetPerformanceClass() (res VolumeGetPerformanceClassRetType) {
+	res, _ = o.GetPerformanceClassOk()
+	return
 }
 
 // GetPerformanceClassOk returns a tuple with the PerformanceClass field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetPerformanceClassOk() (*string, bool) {
-	if o == nil || IsNil(o.PerformanceClass) {
-		return nil, false
-	}
-	return o.PerformanceClass, true
+func (o *Volume) GetPerformanceClassOk() (ret VolumeGetPerformanceClassRetType, ok bool) {
+	return getVolumeGetPerformanceClassAttributeTypeOk(o.PerformanceClass)
 }
 
 // HasPerformanceClass returns a boolean if a field has been set.
 func (o *Volume) HasPerformanceClass() bool {
-	if o != nil && !IsNil(o.PerformanceClass) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetPerformanceClassOk()
+	return ok
 }
 
 // SetPerformanceClass gets a reference to the given string and assigns it to the PerformanceClass field.
-func (o *Volume) SetPerformanceClass(v *string) {
-	o.PerformanceClass = v
+func (o *Volume) SetPerformanceClass(v VolumeGetPerformanceClassRetType) {
+	setVolumeGetPerformanceClassAttributeType(&o.PerformanceClass, v)
 }
 
 // GetServerId returns the ServerId field value if set, zero value otherwise.
-func (o *Volume) GetServerId() *string {
-	if o == nil || IsNil(o.ServerId) {
-		var ret *string
-		return ret
-	}
-	return o.ServerId
+func (o *Volume) GetServerId() (res VolumeGetServerIdRetType) {
+	res, _ = o.GetServerIdOk()
+	return
 }
 
 // GetServerIdOk returns a tuple with the ServerId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetServerIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ServerId) {
-		return nil, false
-	}
-	return o.ServerId, true
+func (o *Volume) GetServerIdOk() (ret VolumeGetServerIdRetType, ok bool) {
+	return getVolumeGetServerIdAttributeTypeOk(o.ServerId)
 }
 
 // HasServerId returns a boolean if a field has been set.
 func (o *Volume) HasServerId() bool {
-	if o != nil && !IsNil(o.ServerId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetServerIdOk()
+	return ok
 }
 
 // SetServerId gets a reference to the given string and assigns it to the ServerId field.
-func (o *Volume) SetServerId(v *string) {
-	o.ServerId = v
+func (o *Volume) SetServerId(v VolumeGetServerIdRetType) {
+	setVolumeGetServerIdAttributeType(&o.ServerId, v)
 }
 
 // GetSize returns the Size field value if set, zero value otherwise.
-func (o *Volume) GetSize() *int64 {
-	if o == nil || IsNil(o.Size) {
-		var ret *int64
-		return ret
-	}
-	return o.Size
+func (o *Volume) GetSize() (res VolumeGetSizeRetType) {
+	res, _ = o.GetSizeOk()
+	return
 }
 
 // GetSizeOk returns a tuple with the Size field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetSizeOk() (*int64, bool) {
-	if o == nil || IsNil(o.Size) {
-		return nil, false
-	}
-	return o.Size, true
+func (o *Volume) GetSizeOk() (ret VolumeGetSizeRetType, ok bool) {
+	return getVolumeGetSizeAttributeTypeOk(o.Size)
 }
 
 // HasSize returns a boolean if a field has been set.
 func (o *Volume) HasSize() bool {
-	if o != nil && !IsNil(o.Size) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSizeOk()
+	return ok
 }
 
 // SetSize gets a reference to the given int64 and assigns it to the Size field.
-func (o *Volume) SetSize(v *int64) {
-	o.Size = v
+func (o *Volume) SetSize(v VolumeGetSizeRetType) {
+	setVolumeGetSizeAttributeType(&o.Size, v)
 }
 
 // GetSource returns the Source field value if set, zero value otherwise.
-func (o *Volume) GetSource() *VolumeSource {
-	if o == nil || IsNil(o.Source) {
-		var ret *VolumeSource
-		return ret
-	}
-	return o.Source
+func (o *Volume) GetSource() (res VolumeGetSourceRetType) {
+	res, _ = o.GetSourceOk()
+	return
 }
 
 // GetSourceOk returns a tuple with the Source field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetSourceOk() (*VolumeSource, bool) {
-	if o == nil || IsNil(o.Source) {
-		return nil, false
-	}
-	return o.Source, true
+func (o *Volume) GetSourceOk() (ret VolumeGetSourceRetType, ok bool) {
+	return getVolumeGetSourceAttributeTypeOk(o.Source)
 }
 
 // HasSource returns a boolean if a field has been set.
 func (o *Volume) HasSource() bool {
-	if o != nil && !IsNil(o.Source) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetSourceOk()
+	return ok
 }
 
 // SetSource gets a reference to the given VolumeSource and assigns it to the Source field.
-func (o *Volume) SetSource(v *VolumeSource) {
-	o.Source = v
+func (o *Volume) SetSource(v VolumeGetSourceRetType) {
+	setVolumeGetSourceAttributeType(&o.Source, v)
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
-func (o *Volume) GetStatus() *string {
-	if o == nil || IsNil(o.Status) {
-		var ret *string
-		return ret
-	}
-	return o.Status
+func (o *Volume) GetStatus() (res VolumeGetStatusRetType) {
+	res, _ = o.GetStatusOk()
+	return
 }
 
 // GetStatusOk returns a tuple with the Status field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetStatusOk() (*string, bool) {
-	if o == nil || IsNil(o.Status) {
-		return nil, false
-	}
-	return o.Status, true
+func (o *Volume) GetStatusOk() (ret VolumeGetStatusRetType, ok bool) {
+	return getVolumeGetStatusAttributeTypeOk(o.Status)
 }
 
 // HasStatus returns a boolean if a field has been set.
 func (o *Volume) HasStatus() bool {
-	if o != nil && !IsNil(o.Status) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetStatusOk()
+	return ok
 }
 
 // SetStatus gets a reference to the given string and assigns it to the Status field.
-func (o *Volume) SetStatus(v *string) {
-	o.Status = v
+func (o *Volume) SetStatus(v VolumeGetStatusRetType) {
+	setVolumeGetStatusAttributeType(&o.Status, v)
 }
 
 // GetUpdatedAt returns the UpdatedAt field value if set, zero value otherwise.
-func (o *Volume) GetUpdatedAt() *time.Time {
-	if o == nil || IsNil(o.UpdatedAt) {
-		var ret *time.Time
-		return ret
-	}
-	return o.UpdatedAt
+func (o *Volume) GetUpdatedAt() (res VolumeGetUpdatedAtRetType) {
+	res, _ = o.GetUpdatedAtOk()
+	return
 }
 
 // GetUpdatedAtOk returns a tuple with the UpdatedAt field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Volume) GetUpdatedAtOk() (*time.Time, bool) {
-	if o == nil || IsNil(o.UpdatedAt) {
-		return nil, false
-	}
-	return o.UpdatedAt, true
+func (o *Volume) GetUpdatedAtOk() (ret VolumeGetUpdatedAtRetType, ok bool) {
+	return getVolumeGetUpdatedAtAttributeTypeOk(o.UpdatedAt)
 }
 
 // HasUpdatedAt returns a boolean if a field has been set.
 func (o *Volume) HasUpdatedAt() bool {
-	if o != nil && !IsNil(o.UpdatedAt) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetUpdatedAtOk()
+	return ok
 }
 
 // SetUpdatedAt gets a reference to the given time.Time and assigns it to the UpdatedAt field.
-func (o *Volume) SetUpdatedAt(v *time.Time) {
-	o.UpdatedAt = v
+func (o *Volume) SetUpdatedAt(v VolumeGetUpdatedAtRetType) {
+	setVolumeGetUpdatedAtAttributeType(&o.UpdatedAt, v)
 }
 
 func (o Volume) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["availabilityZone"] = o.AvailabilityZone
-	if !IsNil(o.Bootable) {
-		toSerialize["bootable"] = o.Bootable
+	if val, ok := getVolumeGetAvailabilityZoneAttributeTypeOk(o.AvailabilityZone); ok {
+		toSerialize["AvailabilityZone"] = val
+	}
+	if val, ok := getVolumegetBootableAttributeTypeOk(o.Bootable); ok {
+		toSerialize["Bootable"] = val
 	}
-	if !IsNil(o.CreatedAt) {
-		toSerialize["createdAt"] = o.CreatedAt
+	if val, ok := getVolumeGetCreatedAtAttributeTypeOk(o.CreatedAt); ok {
+		toSerialize["CreatedAt"] = val
 	}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getVolumeGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
 	}
-	if !IsNil(o.Id) {
-		toSerialize["id"] = o.Id
+	if val, ok := getVolumeGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
 	}
-	if !IsNil(o.ImageConfig) {
-		toSerialize["imageConfig"] = o.ImageConfig
+	if val, ok := getVolumeGetImageConfigAttributeTypeOk(o.ImageConfig); ok {
+		toSerialize["ImageConfig"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getVolumeGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Name) {
-		toSerialize["name"] = o.Name
+	if val, ok := getVolumeGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	if !IsNil(o.PerformanceClass) {
-		toSerialize["performanceClass"] = o.PerformanceClass
+	if val, ok := getVolumeGetPerformanceClassAttributeTypeOk(o.PerformanceClass); ok {
+		toSerialize["PerformanceClass"] = val
 	}
-	if !IsNil(o.ServerId) {
-		toSerialize["serverId"] = o.ServerId
+	if val, ok := getVolumeGetServerIdAttributeTypeOk(o.ServerId); ok {
+		toSerialize["ServerId"] = val
 	}
-	if !IsNil(o.Size) {
-		toSerialize["size"] = o.Size
+	if val, ok := getVolumeGetSizeAttributeTypeOk(o.Size); ok {
+		toSerialize["Size"] = val
 	}
-	if !IsNil(o.Source) {
-		toSerialize["source"] = o.Source
+	if val, ok := getVolumeGetSourceAttributeTypeOk(o.Source); ok {
+		toSerialize["Source"] = val
 	}
-	if !IsNil(o.Status) {
-		toSerialize["status"] = o.Status
+	if val, ok := getVolumeGetStatusAttributeTypeOk(o.Status); ok {
+		toSerialize["Status"] = val
 	}
-	if !IsNil(o.UpdatedAt) {
-		toSerialize["updatedAt"] = o.UpdatedAt
+	if val, ok := getVolumeGetUpdatedAtAttributeTypeOk(o.UpdatedAt); ok {
+		toSerialize["UpdatedAt"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_volume_attachment.go b/services/iaas/model_volume_attachment.go
index a4865527b..421c94b9e 100644
--- a/services/iaas/model_volume_attachment.go
+++ b/services/iaas/model_volume_attachment.go
@@ -17,14 +17,76 @@ import (
 // checks if the VolumeAttachment type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &VolumeAttachment{}
 
+/*
+	types and functions for deleteOnTermination
+*/
+
+// isBoolean
+type VolumeAttachmentgetDeleteOnTerminationAttributeType = *bool
+type VolumeAttachmentgetDeleteOnTerminationArgType = bool
+type VolumeAttachmentgetDeleteOnTerminationRetType = bool
+
+func getVolumeAttachmentgetDeleteOnTerminationAttributeTypeOk(arg VolumeAttachmentgetDeleteOnTerminationAttributeType) (ret VolumeAttachmentgetDeleteOnTerminationRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeAttachmentgetDeleteOnTerminationAttributeType(arg *VolumeAttachmentgetDeleteOnTerminationAttributeType, val VolumeAttachmentgetDeleteOnTerminationRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for serverId
+*/
+
+// isNotNullableString
+type VolumeAttachmentGetServerIdAttributeType = *string
+
+func getVolumeAttachmentGetServerIdAttributeTypeOk(arg VolumeAttachmentGetServerIdAttributeType) (ret VolumeAttachmentGetServerIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeAttachmentGetServerIdAttributeType(arg *VolumeAttachmentGetServerIdAttributeType, val VolumeAttachmentGetServerIdRetType) {
+	*arg = &val
+}
+
+type VolumeAttachmentGetServerIdArgType = string
+type VolumeAttachmentGetServerIdRetType = string
+
+/*
+	types and functions for volumeId
+*/
+
+// isNotNullableString
+type VolumeAttachmentGetVolumeIdAttributeType = *string
+
+func getVolumeAttachmentGetVolumeIdAttributeTypeOk(arg VolumeAttachmentGetVolumeIdAttributeType) (ret VolumeAttachmentGetVolumeIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeAttachmentGetVolumeIdAttributeType(arg *VolumeAttachmentGetVolumeIdAttributeType, val VolumeAttachmentGetVolumeIdRetType) {
+	*arg = &val
+}
+
+type VolumeAttachmentGetVolumeIdArgType = string
+type VolumeAttachmentGetVolumeIdRetType = string
+
 // VolumeAttachment Object that represents a Volume attachment to a server.
 type VolumeAttachment struct {
 	// Delete the volume during the termination of the server. Defaults to false.
-	DeleteOnTermination *bool `json:"deleteOnTermination,omitempty"`
+	DeleteOnTermination VolumeAttachmentgetDeleteOnTerminationAttributeType `json:"deleteOnTermination,omitempty"`
 	// Universally Unique Identifier (UUID).
-	ServerId *string `json:"serverId,omitempty"`
+	ServerId VolumeAttachmentGetServerIdAttributeType `json:"serverId,omitempty"`
 	// Universally Unique Identifier (UUID).
-	VolumeId *string `json:"volumeId,omitempty"`
+	VolumeId VolumeAttachmentGetVolumeIdAttributeType `json:"volumeId,omitempty"`
 }
 
 // NewVolumeAttachment instantiates a new VolumeAttachment object
@@ -45,111 +107,84 @@ func NewVolumeAttachmentWithDefaults() *VolumeAttachment {
 }
 
 // GetDeleteOnTermination returns the DeleteOnTermination field value if set, zero value otherwise.
-func (o *VolumeAttachment) GetDeleteOnTermination() *bool {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		var ret *bool
-		return ret
-	}
-	return o.DeleteOnTermination
+func (o *VolumeAttachment) GetDeleteOnTermination() (res VolumeAttachmentgetDeleteOnTerminationRetType) {
+	res, _ = o.GetDeleteOnTerminationOk()
+	return
 }
 
 // GetDeleteOnTerminationOk returns a tuple with the DeleteOnTermination field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *VolumeAttachment) GetDeleteOnTerminationOk() (*bool, bool) {
-	if o == nil || IsNil(o.DeleteOnTermination) {
-		return nil, false
-	}
-	return o.DeleteOnTermination, true
+func (o *VolumeAttachment) GetDeleteOnTerminationOk() (ret VolumeAttachmentgetDeleteOnTerminationRetType, ok bool) {
+	return getVolumeAttachmentgetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination)
 }
 
 // HasDeleteOnTermination returns a boolean if a field has been set.
 func (o *VolumeAttachment) HasDeleteOnTermination() bool {
-	if o != nil && !IsNil(o.DeleteOnTermination) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDeleteOnTerminationOk()
+	return ok
 }
 
 // SetDeleteOnTermination gets a reference to the given bool and assigns it to the DeleteOnTermination field.
-func (o *VolumeAttachment) SetDeleteOnTermination(v *bool) {
-	o.DeleteOnTermination = v
+func (o *VolumeAttachment) SetDeleteOnTermination(v VolumeAttachmentgetDeleteOnTerminationRetType) {
+	setVolumeAttachmentgetDeleteOnTerminationAttributeType(&o.DeleteOnTermination, v)
 }
 
 // GetServerId returns the ServerId field value if set, zero value otherwise.
-func (o *VolumeAttachment) GetServerId() *string {
-	if o == nil || IsNil(o.ServerId) {
-		var ret *string
-		return ret
-	}
-	return o.ServerId
+func (o *VolumeAttachment) GetServerId() (res VolumeAttachmentGetServerIdRetType) {
+	res, _ = o.GetServerIdOk()
+	return
 }
 
 // GetServerIdOk returns a tuple with the ServerId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *VolumeAttachment) GetServerIdOk() (*string, bool) {
-	if o == nil || IsNil(o.ServerId) {
-		return nil, false
-	}
-	return o.ServerId, true
+func (o *VolumeAttachment) GetServerIdOk() (ret VolumeAttachmentGetServerIdRetType, ok bool) {
+	return getVolumeAttachmentGetServerIdAttributeTypeOk(o.ServerId)
 }
 
 // HasServerId returns a boolean if a field has been set.
 func (o *VolumeAttachment) HasServerId() bool {
-	if o != nil && !IsNil(o.ServerId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetServerIdOk()
+	return ok
 }
 
 // SetServerId gets a reference to the given string and assigns it to the ServerId field.
-func (o *VolumeAttachment) SetServerId(v *string) {
-	o.ServerId = v
+func (o *VolumeAttachment) SetServerId(v VolumeAttachmentGetServerIdRetType) {
+	setVolumeAttachmentGetServerIdAttributeType(&o.ServerId, v)
 }
 
 // GetVolumeId returns the VolumeId field value if set, zero value otherwise.
-func (o *VolumeAttachment) GetVolumeId() *string {
-	if o == nil || IsNil(o.VolumeId) {
-		var ret *string
-		return ret
-	}
-	return o.VolumeId
+func (o *VolumeAttachment) GetVolumeId() (res VolumeAttachmentGetVolumeIdRetType) {
+	res, _ = o.GetVolumeIdOk()
+	return
 }
 
 // GetVolumeIdOk returns a tuple with the VolumeId field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *VolumeAttachment) GetVolumeIdOk() (*string, bool) {
-	if o == nil || IsNil(o.VolumeId) {
-		return nil, false
-	}
-	return o.VolumeId, true
+func (o *VolumeAttachment) GetVolumeIdOk() (ret VolumeAttachmentGetVolumeIdRetType, ok bool) {
+	return getVolumeAttachmentGetVolumeIdAttributeTypeOk(o.VolumeId)
 }
 
 // HasVolumeId returns a boolean if a field has been set.
 func (o *VolumeAttachment) HasVolumeId() bool {
-	if o != nil && !IsNil(o.VolumeId) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetVolumeIdOk()
+	return ok
 }
 
 // SetVolumeId gets a reference to the given string and assigns it to the VolumeId field.
-func (o *VolumeAttachment) SetVolumeId(v *string) {
-	o.VolumeId = v
+func (o *VolumeAttachment) SetVolumeId(v VolumeAttachmentGetVolumeIdRetType) {
+	setVolumeAttachmentGetVolumeIdAttributeType(&o.VolumeId, v)
 }
 
 func (o VolumeAttachment) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.DeleteOnTermination) {
-		toSerialize["deleteOnTermination"] = o.DeleteOnTermination
+	if val, ok := getVolumeAttachmentgetDeleteOnTerminationAttributeTypeOk(o.DeleteOnTermination); ok {
+		toSerialize["DeleteOnTermination"] = val
 	}
-	if !IsNil(o.ServerId) {
-		toSerialize["serverId"] = o.ServerId
+	if val, ok := getVolumeAttachmentGetServerIdAttributeTypeOk(o.ServerId); ok {
+		toSerialize["ServerId"] = val
 	}
-	if !IsNil(o.VolumeId) {
-		toSerialize["volumeId"] = o.VolumeId
+	if val, ok := getVolumeAttachmentGetVolumeIdAttributeTypeOk(o.VolumeId); ok {
+		toSerialize["VolumeId"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_volume_attachment_list_response.go b/services/iaas/model_volume_attachment_list_response.go
index 60dcb3717..df157b268 100644
--- a/services/iaas/model_volume_attachment_list_response.go
+++ b/services/iaas/model_volume_attachment_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the VolumeAttachmentListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &VolumeAttachmentListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type VolumeAttachmentListResponseGetItemsAttributeType = *[]VolumeAttachment
+type VolumeAttachmentListResponseGetItemsArgType = []VolumeAttachment
+type VolumeAttachmentListResponseGetItemsRetType = []VolumeAttachment
+
+func getVolumeAttachmentListResponseGetItemsAttributeTypeOk(arg VolumeAttachmentListResponseGetItemsAttributeType) (ret VolumeAttachmentListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeAttachmentListResponseGetItemsAttributeType(arg *VolumeAttachmentListResponseGetItemsAttributeType, val VolumeAttachmentListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // VolumeAttachmentListResponse Volume attachment list response.
 type VolumeAttachmentListResponse struct {
 	// A list containing Volume attachments of a server.
 	// REQUIRED
-	Items *[]VolumeAttachment `json:"items"`
+	Items VolumeAttachmentListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _VolumeAttachmentListResponse VolumeAttachmentListResponse
@@ -30,9 +50,9 @@ type _VolumeAttachmentListResponse VolumeAttachmentListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewVolumeAttachmentListResponse(items *[]VolumeAttachment) *VolumeAttachmentListResponse {
+func NewVolumeAttachmentListResponse(items VolumeAttachmentListResponseGetItemsArgType) *VolumeAttachmentListResponse {
 	this := VolumeAttachmentListResponse{}
-	this.Items = items
+	setVolumeAttachmentListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewVolumeAttachmentListResponseWithDefaults() *VolumeAttachmentListResponse
 }
 
 // GetItems returns the Items field value
-func (o *VolumeAttachmentListResponse) GetItems() *[]VolumeAttachment {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]VolumeAttachment
-		return ret
-	}
-
-	return o.Items
+func (o *VolumeAttachmentListResponse) GetItems() (ret VolumeAttachmentListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *VolumeAttachmentListResponse) GetItemsOk() (*[]VolumeAttachment, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *VolumeAttachmentListResponse) GetItemsOk() (ret VolumeAttachmentListResponseGetItemsRetType, ok bool) {
+	return getVolumeAttachmentListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *VolumeAttachmentListResponse) SetItems(v *[]VolumeAttachment) {
-	o.Items = v
+func (o *VolumeAttachmentListResponse) SetItems(v VolumeAttachmentListResponseGetItemsRetType) {
+	setVolumeAttachmentListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o VolumeAttachmentListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getVolumeAttachmentListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_volume_list_response.go b/services/iaas/model_volume_list_response.go
index db92419cb..924c3af9d 100644
--- a/services/iaas/model_volume_list_response.go
+++ b/services/iaas/model_volume_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the VolumeListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &VolumeListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type VolumeListResponseGetItemsAttributeType = *[]Volume
+type VolumeListResponseGetItemsArgType = []Volume
+type VolumeListResponseGetItemsRetType = []Volume
+
+func getVolumeListResponseGetItemsAttributeTypeOk(arg VolumeListResponseGetItemsAttributeType) (ret VolumeListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeListResponseGetItemsAttributeType(arg *VolumeListResponseGetItemsAttributeType, val VolumeListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // VolumeListResponse Volume list response.
 type VolumeListResponse struct {
 	// A list containing volume objects.
 	// REQUIRED
-	Items *[]Volume `json:"items"`
+	Items VolumeListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _VolumeListResponse VolumeListResponse
@@ -30,9 +50,9 @@ type _VolumeListResponse VolumeListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewVolumeListResponse(items *[]Volume) *VolumeListResponse {
+func NewVolumeListResponse(items VolumeListResponseGetItemsArgType) *VolumeListResponse {
 	this := VolumeListResponse{}
-	this.Items = items
+	setVolumeListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewVolumeListResponseWithDefaults() *VolumeListResponse {
 }
 
 // GetItems returns the Items field value
-func (o *VolumeListResponse) GetItems() *[]Volume {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]Volume
-		return ret
-	}
-
-	return o.Items
+func (o *VolumeListResponse) GetItems() (ret VolumeListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *VolumeListResponse) GetItemsOk() (*[]Volume, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *VolumeListResponse) GetItemsOk() (ret VolumeListResponseGetItemsRetType, ok bool) {
+	return getVolumeListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *VolumeListResponse) SetItems(v *[]Volume) {
-	o.Items = v
+func (o *VolumeListResponse) SetItems(v VolumeListResponseGetItemsRetType) {
+	setVolumeListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o VolumeListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getVolumeListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_volume_performance_class.go b/services/iaas/model_volume_performance_class.go
index 6d5d936b0..76a87ee62 100644
--- a/services/iaas/model_volume_performance_class.go
+++ b/services/iaas/model_volume_performance_class.go
@@ -17,19 +17,121 @@ import (
 // checks if the VolumePerformanceClass type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &VolumePerformanceClass{}
 
+/*
+	types and functions for description
+*/
+
+// isNotNullableString
+type VolumePerformanceClassGetDescriptionAttributeType = *string
+
+func getVolumePerformanceClassGetDescriptionAttributeTypeOk(arg VolumePerformanceClassGetDescriptionAttributeType) (ret VolumePerformanceClassGetDescriptionRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumePerformanceClassGetDescriptionAttributeType(arg *VolumePerformanceClassGetDescriptionAttributeType, val VolumePerformanceClassGetDescriptionRetType) {
+	*arg = &val
+}
+
+type VolumePerformanceClassGetDescriptionArgType = string
+type VolumePerformanceClassGetDescriptionRetType = string
+
+/*
+	types and functions for iops
+*/
+
+// isLong
+type VolumePerformanceClassGetIopsAttributeType = *int64
+type VolumePerformanceClassGetIopsArgType = int64
+type VolumePerformanceClassGetIopsRetType = int64
+
+func getVolumePerformanceClassGetIopsAttributeTypeOk(arg VolumePerformanceClassGetIopsAttributeType) (ret VolumePerformanceClassGetIopsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumePerformanceClassGetIopsAttributeType(arg *VolumePerformanceClassGetIopsAttributeType, val VolumePerformanceClassGetIopsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for labels
+*/
+
+// isFreeform
+type VolumePerformanceClassGetLabelsAttributeType = *map[string]interface{}
+type VolumePerformanceClassGetLabelsArgType = map[string]interface{}
+type VolumePerformanceClassGetLabelsRetType = map[string]interface{}
+
+func getVolumePerformanceClassGetLabelsAttributeTypeOk(arg VolumePerformanceClassGetLabelsAttributeType) (ret VolumePerformanceClassGetLabelsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumePerformanceClassGetLabelsAttributeType(arg *VolumePerformanceClassGetLabelsAttributeType, val VolumePerformanceClassGetLabelsRetType) {
+	*arg = &val
+}
+
+/*
+	types and functions for name
+*/
+
+// isNotNullableString
+type VolumePerformanceClassGetNameAttributeType = *string
+
+func getVolumePerformanceClassGetNameAttributeTypeOk(arg VolumePerformanceClassGetNameAttributeType) (ret VolumePerformanceClassGetNameRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumePerformanceClassGetNameAttributeType(arg *VolumePerformanceClassGetNameAttributeType, val VolumePerformanceClassGetNameRetType) {
+	*arg = &val
+}
+
+type VolumePerformanceClassGetNameArgType = string
+type VolumePerformanceClassGetNameRetType = string
+
+/*
+	types and functions for throughput
+*/
+
+// isLong
+type VolumePerformanceClassGetThroughputAttributeType = *int64
+type VolumePerformanceClassGetThroughputArgType = int64
+type VolumePerformanceClassGetThroughputRetType = int64
+
+func getVolumePerformanceClassGetThroughputAttributeTypeOk(arg VolumePerformanceClassGetThroughputAttributeType) (ret VolumePerformanceClassGetThroughputRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumePerformanceClassGetThroughputAttributeType(arg *VolumePerformanceClassGetThroughputAttributeType, val VolumePerformanceClassGetThroughputRetType) {
+	*arg = &val
+}
+
 // VolumePerformanceClass Object that represents a Volume performance class.
 type VolumePerformanceClass struct {
 	// Description Object. Allows string up to 127 Characters.
-	Description *string `json:"description,omitempty"`
+	Description VolumePerformanceClassGetDescriptionAttributeType `json:"description,omitempty"`
 	// Input/Output Operations per second.
-	Iops *int64 `json:"iops,omitempty"`
+	Iops VolumePerformanceClassGetIopsAttributeType `json:"iops,omitempty"`
 	// Object that represents the labels of an object. Regex for keys: `^[a-z]((-|_|[a-z0-9])){0,62}$`. Regex for values: `^(-|_|[a-z0-9]){0,63}$`.
-	Labels *map[string]interface{} `json:"labels,omitempty"`
+	Labels VolumePerformanceClassGetLabelsAttributeType `json:"labels,omitempty"`
 	// The name for a General Object. Matches Names and also UUIDs.
 	// REQUIRED
-	Name *string `json:"name"`
+	Name VolumePerformanceClassGetNameAttributeType `json:"name"`
 	// Throughput in Megabyte per second.
-	Throughput *int64 `json:"throughput,omitempty"`
+	Throughput VolumePerformanceClassGetThroughputAttributeType `json:"throughput,omitempty"`
 }
 
 type _VolumePerformanceClass VolumePerformanceClass
@@ -38,9 +140,9 @@ type _VolumePerformanceClass VolumePerformanceClass
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewVolumePerformanceClass(name *string) *VolumePerformanceClass {
+func NewVolumePerformanceClass(name VolumePerformanceClassGetNameArgType) *VolumePerformanceClass {
 	this := VolumePerformanceClass{}
-	this.Name = name
+	setVolumePerformanceClassGetNameAttributeType(&this.Name, name)
 	return &this
 }
 
@@ -53,171 +155,130 @@ func NewVolumePerformanceClassWithDefaults() *VolumePerformanceClass {
 }
 
 // GetDescription returns the Description field value if set, zero value otherwise.
-func (o *VolumePerformanceClass) GetDescription() *string {
-	if o == nil || IsNil(o.Description) {
-		var ret *string
-		return ret
-	}
-	return o.Description
+func (o *VolumePerformanceClass) GetDescription() (res VolumePerformanceClassGetDescriptionRetType) {
+	res, _ = o.GetDescriptionOk()
+	return
 }
 
 // GetDescriptionOk returns a tuple with the Description field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *VolumePerformanceClass) GetDescriptionOk() (*string, bool) {
-	if o == nil || IsNil(o.Description) {
-		return nil, false
-	}
-	return o.Description, true
+func (o *VolumePerformanceClass) GetDescriptionOk() (ret VolumePerformanceClassGetDescriptionRetType, ok bool) {
+	return getVolumePerformanceClassGetDescriptionAttributeTypeOk(o.Description)
 }
 
 // HasDescription returns a boolean if a field has been set.
 func (o *VolumePerformanceClass) HasDescription() bool {
-	if o != nil && !IsNil(o.Description) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetDescriptionOk()
+	return ok
 }
 
 // SetDescription gets a reference to the given string and assigns it to the Description field.
-func (o *VolumePerformanceClass) SetDescription(v *string) {
-	o.Description = v
+func (o *VolumePerformanceClass) SetDescription(v VolumePerformanceClassGetDescriptionRetType) {
+	setVolumePerformanceClassGetDescriptionAttributeType(&o.Description, v)
 }
 
 // GetIops returns the Iops field value if set, zero value otherwise.
-func (o *VolumePerformanceClass) GetIops() *int64 {
-	if o == nil || IsNil(o.Iops) {
-		var ret *int64
-		return ret
-	}
-	return o.Iops
+func (o *VolumePerformanceClass) GetIops() (res VolumePerformanceClassGetIopsRetType) {
+	res, _ = o.GetIopsOk()
+	return
 }
 
 // GetIopsOk returns a tuple with the Iops field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *VolumePerformanceClass) GetIopsOk() (*int64, bool) {
-	if o == nil || IsNil(o.Iops) {
-		return nil, false
-	}
-	return o.Iops, true
+func (o *VolumePerformanceClass) GetIopsOk() (ret VolumePerformanceClassGetIopsRetType, ok bool) {
+	return getVolumePerformanceClassGetIopsAttributeTypeOk(o.Iops)
 }
 
 // HasIops returns a boolean if a field has been set.
 func (o *VolumePerformanceClass) HasIops() bool {
-	if o != nil && !IsNil(o.Iops) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetIopsOk()
+	return ok
 }
 
 // SetIops gets a reference to the given int64 and assigns it to the Iops field.
-func (o *VolumePerformanceClass) SetIops(v *int64) {
-	o.Iops = v
+func (o *VolumePerformanceClass) SetIops(v VolumePerformanceClassGetIopsRetType) {
+	setVolumePerformanceClassGetIopsAttributeType(&o.Iops, v)
 }
 
 // GetLabels returns the Labels field value if set, zero value otherwise.
-func (o *VolumePerformanceClass) GetLabels() *map[string]interface{} {
-	if o == nil || IsNil(o.Labels) {
-		var ret *map[string]interface{}
-		return ret
-	}
-	return o.Labels
+func (o *VolumePerformanceClass) GetLabels() (res VolumePerformanceClassGetLabelsRetType) {
+	res, _ = o.GetLabelsOk()
+	return
 }
 
 // GetLabelsOk returns a tuple with the Labels field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *VolumePerformanceClass) GetLabelsOk() (*map[string]interface{}, bool) {
-	if o == nil || IsNil(o.Labels) {
-		return &map[string]interface{}{}, false
-	}
-	return o.Labels, true
+func (o *VolumePerformanceClass) GetLabelsOk() (ret VolumePerformanceClassGetLabelsRetType, ok bool) {
+	return getVolumePerformanceClassGetLabelsAttributeTypeOk(o.Labels)
 }
 
 // HasLabels returns a boolean if a field has been set.
 func (o *VolumePerformanceClass) HasLabels() bool {
-	if o != nil && !IsNil(o.Labels) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetLabelsOk()
+	return ok
 }
 
 // SetLabels gets a reference to the given map[string]interface{} and assigns it to the Labels field.
-func (o *VolumePerformanceClass) SetLabels(v *map[string]interface{}) {
-	o.Labels = v
+func (o *VolumePerformanceClass) SetLabels(v VolumePerformanceClassGetLabelsRetType) {
+	setVolumePerformanceClassGetLabelsAttributeType(&o.Labels, v)
 }
 
 // GetName returns the Name field value
-func (o *VolumePerformanceClass) GetName() *string {
-	if o == nil || IsNil(o.Name) {
-		var ret *string
-		return ret
-	}
-
-	return o.Name
+func (o *VolumePerformanceClass) GetName() (ret VolumePerformanceClassGetNameRetType) {
+	ret, _ = o.GetNameOk()
+	return ret
 }
 
 // GetNameOk returns a tuple with the Name field value
 // and a boolean to check if the value has been set.
-func (o *VolumePerformanceClass) GetNameOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Name, true
+func (o *VolumePerformanceClass) GetNameOk() (ret VolumePerformanceClassGetNameRetType, ok bool) {
+	return getVolumePerformanceClassGetNameAttributeTypeOk(o.Name)
 }
 
 // SetName sets field value
-func (o *VolumePerformanceClass) SetName(v *string) {
-	o.Name = v
+func (o *VolumePerformanceClass) SetName(v VolumePerformanceClassGetNameRetType) {
+	setVolumePerformanceClassGetNameAttributeType(&o.Name, v)
 }
 
 // GetThroughput returns the Throughput field value if set, zero value otherwise.
-func (o *VolumePerformanceClass) GetThroughput() *int64 {
-	if o == nil || IsNil(o.Throughput) {
-		var ret *int64
-		return ret
-	}
-	return o.Throughput
+func (o *VolumePerformanceClass) GetThroughput() (res VolumePerformanceClassGetThroughputRetType) {
+	res, _ = o.GetThroughputOk()
+	return
 }
 
 // GetThroughputOk returns a tuple with the Throughput field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *VolumePerformanceClass) GetThroughputOk() (*int64, bool) {
-	if o == nil || IsNil(o.Throughput) {
-		return nil, false
-	}
-	return o.Throughput, true
+func (o *VolumePerformanceClass) GetThroughputOk() (ret VolumePerformanceClassGetThroughputRetType, ok bool) {
+	return getVolumePerformanceClassGetThroughputAttributeTypeOk(o.Throughput)
 }
 
 // HasThroughput returns a boolean if a field has been set.
 func (o *VolumePerformanceClass) HasThroughput() bool {
-	if o != nil && !IsNil(o.Throughput) {
-		return true
-	}
-
-	return false
+	_, ok := o.GetThroughputOk()
+	return ok
 }
 
 // SetThroughput gets a reference to the given int64 and assigns it to the Throughput field.
-func (o *VolumePerformanceClass) SetThroughput(v *int64) {
-	o.Throughput = v
+func (o *VolumePerformanceClass) SetThroughput(v VolumePerformanceClassGetThroughputRetType) {
+	setVolumePerformanceClassGetThroughputAttributeType(&o.Throughput, v)
 }
 
 func (o VolumePerformanceClass) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	if !IsNil(o.Description) {
-		toSerialize["description"] = o.Description
+	if val, ok := getVolumePerformanceClassGetDescriptionAttributeTypeOk(o.Description); ok {
+		toSerialize["Description"] = val
+	}
+	if val, ok := getVolumePerformanceClassGetIopsAttributeTypeOk(o.Iops); ok {
+		toSerialize["Iops"] = val
 	}
-	if !IsNil(o.Iops) {
-		toSerialize["iops"] = o.Iops
+	if val, ok := getVolumePerformanceClassGetLabelsAttributeTypeOk(o.Labels); ok {
+		toSerialize["Labels"] = val
 	}
-	if !IsNil(o.Labels) {
-		toSerialize["labels"] = o.Labels
+	if val, ok := getVolumePerformanceClassGetNameAttributeTypeOk(o.Name); ok {
+		toSerialize["Name"] = val
 	}
-	toSerialize["name"] = o.Name
-	if !IsNil(o.Throughput) {
-		toSerialize["throughput"] = o.Throughput
+	if val, ok := getVolumePerformanceClassGetThroughputAttributeTypeOk(o.Throughput); ok {
+		toSerialize["Throughput"] = val
 	}
 	return toSerialize, nil
 }
diff --git a/services/iaas/model_volume_performance_class_list_response.go b/services/iaas/model_volume_performance_class_list_response.go
index 83b346e2a..bab673ec9 100644
--- a/services/iaas/model_volume_performance_class_list_response.go
+++ b/services/iaas/model_volume_performance_class_list_response.go
@@ -17,11 +17,31 @@ import (
 // checks if the VolumePerformanceClassListResponse type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &VolumePerformanceClassListResponse{}
 
+/*
+	types and functions for items
+*/
+
+// isArray
+type VolumePerformanceClassListResponseGetItemsAttributeType = *[]VolumePerformanceClass
+type VolumePerformanceClassListResponseGetItemsArgType = []VolumePerformanceClass
+type VolumePerformanceClassListResponseGetItemsRetType = []VolumePerformanceClass
+
+func getVolumePerformanceClassListResponseGetItemsAttributeTypeOk(arg VolumePerformanceClassListResponseGetItemsAttributeType) (ret VolumePerformanceClassListResponseGetItemsRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumePerformanceClassListResponseGetItemsAttributeType(arg *VolumePerformanceClassListResponseGetItemsAttributeType, val VolumePerformanceClassListResponseGetItemsRetType) {
+	*arg = &val
+}
+
 // VolumePerformanceClassListResponse Volume performance class list response.
 type VolumePerformanceClassListResponse struct {
 	// A list containing Volume performance classes.
 	// REQUIRED
-	Items *[]VolumePerformanceClass `json:"items"`
+	Items VolumePerformanceClassListResponseGetItemsAttributeType `json:"items"`
 }
 
 type _VolumePerformanceClassListResponse VolumePerformanceClassListResponse
@@ -30,9 +50,9 @@ type _VolumePerformanceClassListResponse VolumePerformanceClassListResponse
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewVolumePerformanceClassListResponse(items *[]VolumePerformanceClass) *VolumePerformanceClassListResponse {
+func NewVolumePerformanceClassListResponse(items VolumePerformanceClassListResponseGetItemsArgType) *VolumePerformanceClassListResponse {
 	this := VolumePerformanceClassListResponse{}
-	this.Items = items
+	setVolumePerformanceClassListResponseGetItemsAttributeType(&this.Items, items)
 	return &this
 }
 
@@ -45,32 +65,27 @@ func NewVolumePerformanceClassListResponseWithDefaults() *VolumePerformanceClass
 }
 
 // GetItems returns the Items field value
-func (o *VolumePerformanceClassListResponse) GetItems() *[]VolumePerformanceClass {
-	if o == nil || IsNil(o.Items) {
-		var ret *[]VolumePerformanceClass
-		return ret
-	}
-
-	return o.Items
+func (o *VolumePerformanceClassListResponse) GetItems() (ret VolumePerformanceClassListResponseGetItemsRetType) {
+	ret, _ = o.GetItemsOk()
+	return ret
 }
 
 // GetItemsOk returns a tuple with the Items field value
 // and a boolean to check if the value has been set.
-func (o *VolumePerformanceClassListResponse) GetItemsOk() (*[]VolumePerformanceClass, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Items, true
+func (o *VolumePerformanceClassListResponse) GetItemsOk() (ret VolumePerformanceClassListResponseGetItemsRetType, ok bool) {
+	return getVolumePerformanceClassListResponseGetItemsAttributeTypeOk(o.Items)
 }
 
 // SetItems sets field value
-func (o *VolumePerformanceClassListResponse) SetItems(v *[]VolumePerformanceClass) {
-	o.Items = v
+func (o *VolumePerformanceClassListResponse) SetItems(v VolumePerformanceClassListResponseGetItemsRetType) {
+	setVolumePerformanceClassListResponseGetItemsAttributeType(&o.Items, v)
 }
 
 func (o VolumePerformanceClassListResponse) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["items"] = o.Items
+	if val, ok := getVolumePerformanceClassListResponseGetItemsAttributeTypeOk(o.Items); ok {
+		toSerialize["Items"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/model_volume_source.go b/services/iaas/model_volume_source.go
index 62db77414..bde3f185f 100644
--- a/services/iaas/model_volume_source.go
+++ b/services/iaas/model_volume_source.go
@@ -17,14 +17,56 @@ import (
 // checks if the VolumeSource type satisfies the MappedNullable interface at compile time
 var _ MappedNullable = &VolumeSource{}
 
+/*
+	types and functions for id
+*/
+
+// isNotNullableString
+type VolumeSourceGetIdAttributeType = *string
+
+func getVolumeSourceGetIdAttributeTypeOk(arg VolumeSourceGetIdAttributeType) (ret VolumeSourceGetIdRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeSourceGetIdAttributeType(arg *VolumeSourceGetIdAttributeType, val VolumeSourceGetIdRetType) {
+	*arg = &val
+}
+
+type VolumeSourceGetIdArgType = string
+type VolumeSourceGetIdRetType = string
+
+/*
+	types and functions for type
+*/
+
+// isNotNullableString
+type VolumeSourceGetTypeAttributeType = *string
+
+func getVolumeSourceGetTypeAttributeTypeOk(arg VolumeSourceGetTypeAttributeType) (ret VolumeSourceGetTypeRetType, ok bool) {
+	if arg == nil {
+		return ret, false
+	}
+	return *arg, true
+}
+
+func setVolumeSourceGetTypeAttributeType(arg *VolumeSourceGetTypeAttributeType, val VolumeSourceGetTypeRetType) {
+	*arg = &val
+}
+
+type VolumeSourceGetTypeArgType = string
+type VolumeSourceGetTypeRetType = string
+
 // VolumeSource The source object of a volume.
 type VolumeSource struct {
 	// Universally Unique Identifier (UUID).
 	// REQUIRED
-	Id *string `json:"id"`
+	Id VolumeSourceGetIdAttributeType `json:"id"`
 	// The source types of a volume. Possible values: `image`, `volume`, `snapshot`, `backup`.
 	// REQUIRED
-	Type *string `json:"type"`
+	Type VolumeSourceGetTypeAttributeType `json:"type"`
 }
 
 type _VolumeSource VolumeSource
@@ -33,10 +75,10 @@ type _VolumeSource VolumeSource
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewVolumeSource(id *string, type_ *string) *VolumeSource {
+func NewVolumeSource(id VolumeSourceGetIdArgType, type_ VolumeSourceGetTypeArgType) *VolumeSource {
 	this := VolumeSource{}
-	this.Id = id
-	this.Type = type_
+	setVolumeSourceGetIdAttributeType(&this.Id, id)
+	setVolumeSourceGetTypeAttributeType(&this.Type, type_)
 	return &this
 }
 
@@ -49,57 +91,47 @@ func NewVolumeSourceWithDefaults() *VolumeSource {
 }
 
 // GetId returns the Id field value
-func (o *VolumeSource) GetId() *string {
-	if o == nil || IsNil(o.Id) {
-		var ret *string
-		return ret
-	}
-
-	return o.Id
+func (o *VolumeSource) GetId() (ret VolumeSourceGetIdRetType) {
+	ret, _ = o.GetIdOk()
+	return ret
 }
 
 // GetIdOk returns a tuple with the Id field value
 // and a boolean to check if the value has been set.
-func (o *VolumeSource) GetIdOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Id, true
+func (o *VolumeSource) GetIdOk() (ret VolumeSourceGetIdRetType, ok bool) {
+	return getVolumeSourceGetIdAttributeTypeOk(o.Id)
 }
 
 // SetId sets field value
-func (o *VolumeSource) SetId(v *string) {
-	o.Id = v
+func (o *VolumeSource) SetId(v VolumeSourceGetIdRetType) {
+	setVolumeSourceGetIdAttributeType(&o.Id, v)
 }
 
 // GetType returns the Type field value
-func (o *VolumeSource) GetType() *string {
-	if o == nil || IsNil(o.Type) {
-		var ret *string
-		return ret
-	}
-
-	return o.Type
+func (o *VolumeSource) GetType() (ret VolumeSourceGetTypeRetType) {
+	ret, _ = o.GetTypeOk()
+	return ret
 }
 
 // GetTypeOk returns a tuple with the Type field value
 // and a boolean to check if the value has been set.
-func (o *VolumeSource) GetTypeOk() (*string, bool) {
-	if o == nil {
-		return nil, false
-	}
-	return o.Type, true
+func (o *VolumeSource) GetTypeOk() (ret VolumeSourceGetTypeRetType, ok bool) {
+	return getVolumeSourceGetTypeAttributeTypeOk(o.Type)
 }
 
 // SetType sets field value
-func (o *VolumeSource) SetType(v *string) {
-	o.Type = v
+func (o *VolumeSource) SetType(v VolumeSourceGetTypeRetType) {
+	setVolumeSourceGetTypeAttributeType(&o.Type, v)
 }
 
 func (o VolumeSource) ToMap() (map[string]interface{}, error) {
 	toSerialize := map[string]interface{}{}
-	toSerialize["id"] = o.Id
-	toSerialize["type"] = o.Type
+	if val, ok := getVolumeSourceGetIdAttributeTypeOk(o.Id); ok {
+		toSerialize["Id"] = val
+	}
+	if val, ok := getVolumeSourceGetTypeAttributeTypeOk(o.Type); ok {
+		toSerialize["Type"] = val
+	}
 	return toSerialize, nil
 }
 
diff --git a/services/iaas/utils.go b/services/iaas/utils.go
index 7879769b3..0f1833e15 100644
--- a/services/iaas/utils.go
+++ b/services/iaas/utils.go
@@ -40,6 +40,29 @@ func PtrString(v string) *string { return &v }
 // PtrTime is helper routine that returns a pointer to given Time value.
 func PtrTime(v time.Time) *time.Time { return &v }
 
+type NullableValue[T any] struct {
+	value *T
+	isSet bool
+}
+
+func (v NullableValue[T]) Get() *T {
+	return v.value
+}
+
+func (v *NullableValue[T]) Set(val *T) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableValue[T]) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableValue[T]) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
 type NullableBool struct {
 	value *bool
 	isSet bool
@@ -333,6 +356,9 @@ func IsNil(i interface{}) bool {
 	if i == nil {
 		return true
 	}
+	if t, ok := i.(interface{ IsSet() bool }); ok {
+		return !t.IsSet()
+	}
 	switch reflect.TypeOf(i).Kind() {
 	case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
 		return reflect.ValueOf(i).IsNil()