diff --git a/services/secretsmanager/CHANGELOG.md b/services/secretsmanager/CHANGELOG.md
index cefde9cd4..2dddd08c0 100644
--- a/services/secretsmanager/CHANGELOG.md
+++ b/services/secretsmanager/CHANGELOG.md
@@ -1,3 +1,7 @@
+## v0.10.0 (2024-10-14)
+
+- **Feature:** Add support for nullable models
+
 ## v0.9.0 (2024-08-16)
 
 - **Feature**: New API method `UpdateInstance` to update an instance
diff --git a/services/secretsmanager/model_acl.go b/services/secretsmanager/model_acl.go
index b2644461e..aa340cdf4 100644
--- a/services/secretsmanager/model_acl.go
+++ b/services/secretsmanager/model_acl.go
@@ -10,6 +10,13 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the ACL type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &ACL{}
+
 // ACL struct for ACL
 type ACL struct {
 	// The given IP/IP Range that is permitted to access.
@@ -19,3 +26,115 @@ type ACL struct {
 	// REQUIRED
 	Id *string `json:"id"`
 }
+
+type _ACL ACL
+
+// NewACL instantiates a new ACL object
+// 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 NewACL(cidr *string, id *string) *ACL {
+	this := ACL{}
+	this.Cidr = cidr
+	this.Id = id
+	return &this
+}
+
+// NewACLWithDefaults instantiates a new ACL object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewACLWithDefaults() *ACL {
+	this := ACL{}
+	return &this
+}
+
+// GetCidr returns the Cidr field value
+func (o *ACL) GetCidr() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Cidr
+}
+
+// GetCidrOk returns a tuple with the Cidr field value
+// and a boolean to check if the value has been set.
+func (o *ACL) GetCidrOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Cidr, true
+}
+
+// SetCidr sets field value
+func (o *ACL) SetCidr(v *string) {
+	o.Cidr = v
+}
+
+// GetId returns the Id field value
+func (o *ACL) GetId() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Id
+}
+
+// GetIdOk returns a tuple with the Id field value
+// and a boolean to check if the value has been set.
+func (o *ACL) GetIdOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Id, true
+}
+
+// SetId sets field value
+func (o *ACL) SetId(v *string) {
+	o.Id = v
+}
+
+func (o ACL) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["cidr"] = o.Cidr
+	toSerialize["id"] = o.Id
+	return toSerialize, nil
+}
+
+type NullableACL struct {
+	value *ACL
+	isSet bool
+}
+
+func (v NullableACL) Get() *ACL {
+	return v.value
+}
+
+func (v *NullableACL) Set(val *ACL) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableACL) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableACL) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableACL(val *ACL) *NullableACL {
+	return &NullableACL{value: val, isSet: true}
+}
+
+func (v NullableACL) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableACL) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_create_acl_payload.go b/services/secretsmanager/model_create_acl_payload.go
index c6e5e79ec..5feba4761 100644
--- a/services/secretsmanager/model_create_acl_payload.go
+++ b/services/secretsmanager/model_create_acl_payload.go
@@ -10,9 +10,102 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the CreateACLPayload type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &CreateACLPayload{}
+
 // CreateACLPayload struct for CreateACLPayload
 type CreateACLPayload struct {
 	// The given IP/IP Range that is permitted to access.
 	// REQUIRED
 	Cidr *string `json:"cidr"`
 }
+
+type _CreateACLPayload CreateACLPayload
+
+// NewCreateACLPayload instantiates a new CreateACLPayload object
+// 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 NewCreateACLPayload(cidr *string) *CreateACLPayload {
+	this := CreateACLPayload{}
+	this.Cidr = cidr
+	return &this
+}
+
+// NewCreateACLPayloadWithDefaults instantiates a new CreateACLPayload object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewCreateACLPayloadWithDefaults() *CreateACLPayload {
+	this := CreateACLPayload{}
+	return &this
+}
+
+// GetCidr returns the Cidr field value
+func (o *CreateACLPayload) GetCidr() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Cidr
+}
+
+// GetCidrOk returns a tuple with the Cidr field value
+// and a boolean to check if the value has been set.
+func (o *CreateACLPayload) GetCidrOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Cidr, true
+}
+
+// SetCidr sets field value
+func (o *CreateACLPayload) SetCidr(v *string) {
+	o.Cidr = v
+}
+
+func (o CreateACLPayload) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["cidr"] = o.Cidr
+	return toSerialize, nil
+}
+
+type NullableCreateACLPayload struct {
+	value *CreateACLPayload
+	isSet bool
+}
+
+func (v NullableCreateACLPayload) Get() *CreateACLPayload {
+	return v.value
+}
+
+func (v *NullableCreateACLPayload) Set(val *CreateACLPayload) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableCreateACLPayload) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableCreateACLPayload) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableCreateACLPayload(val *CreateACLPayload) *NullableCreateACLPayload {
+	return &NullableCreateACLPayload{value: val, isSet: true}
+}
+
+func (v NullableCreateACLPayload) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableCreateACLPayload) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_create_instance_payload.go b/services/secretsmanager/model_create_instance_payload.go
index 5cd3befc1..92e443645 100644
--- a/services/secretsmanager/model_create_instance_payload.go
+++ b/services/secretsmanager/model_create_instance_payload.go
@@ -10,9 +10,102 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the CreateInstancePayload type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &CreateInstancePayload{}
+
 // CreateInstancePayload struct for CreateInstancePayload
 type CreateInstancePayload struct {
 	// A user chosen name to distinguish multiple secrets manager instances.
 	// REQUIRED
 	Name *string `json:"name"`
 }
+
+type _CreateInstancePayload CreateInstancePayload
+
+// NewCreateInstancePayload instantiates a new CreateInstancePayload object
+// 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 NewCreateInstancePayload(name *string) *CreateInstancePayload {
+	this := CreateInstancePayload{}
+	this.Name = name
+	return &this
+}
+
+// NewCreateInstancePayloadWithDefaults instantiates a new CreateInstancePayload object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewCreateInstancePayloadWithDefaults() *CreateInstancePayload {
+	this := CreateInstancePayload{}
+	return &this
+}
+
+// GetName returns the Name field value
+func (o *CreateInstancePayload) GetName() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Name
+}
+
+// GetNameOk returns a tuple with the Name field value
+// and a boolean to check if the value has been set.
+func (o *CreateInstancePayload) GetNameOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Name, true
+}
+
+// SetName sets field value
+func (o *CreateInstancePayload) SetName(v *string) {
+	o.Name = v
+}
+
+func (o CreateInstancePayload) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["name"] = o.Name
+	return toSerialize, nil
+}
+
+type NullableCreateInstancePayload struct {
+	value *CreateInstancePayload
+	isSet bool
+}
+
+func (v NullableCreateInstancePayload) Get() *CreateInstancePayload {
+	return v.value
+}
+
+func (v *NullableCreateInstancePayload) Set(val *CreateInstancePayload) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableCreateInstancePayload) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableCreateInstancePayload) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableCreateInstancePayload(val *CreateInstancePayload) *NullableCreateInstancePayload {
+	return &NullableCreateInstancePayload{value: val, isSet: true}
+}
+
+func (v NullableCreateInstancePayload) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableCreateInstancePayload) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_create_user_payload.go b/services/secretsmanager/model_create_user_payload.go
index 0cdc700c6..f394a941a 100644
--- a/services/secretsmanager/model_create_user_payload.go
+++ b/services/secretsmanager/model_create_user_payload.go
@@ -10,6 +10,13 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the CreateUserPayload type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &CreateUserPayload{}
+
 // CreateUserPayload struct for CreateUserPayload
 type CreateUserPayload struct {
 	// A user chosen description to differentiate between multiple users.
@@ -19,3 +26,115 @@ type CreateUserPayload struct {
 	// REQUIRED
 	Write *bool `json:"write"`
 }
+
+type _CreateUserPayload CreateUserPayload
+
+// NewCreateUserPayload instantiates a new CreateUserPayload object
+// 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 NewCreateUserPayload(description *string, write *bool) *CreateUserPayload {
+	this := CreateUserPayload{}
+	this.Description = description
+	this.Write = write
+	return &this
+}
+
+// NewCreateUserPayloadWithDefaults instantiates a new CreateUserPayload object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewCreateUserPayloadWithDefaults() *CreateUserPayload {
+	this := CreateUserPayload{}
+	return &this
+}
+
+// GetDescription returns the Description field value
+func (o *CreateUserPayload) GetDescription() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Description
+}
+
+// GetDescriptionOk returns a tuple with the Description field value
+// and a boolean to check if the value has been set.
+func (o *CreateUserPayload) GetDescriptionOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Description, true
+}
+
+// SetDescription sets field value
+func (o *CreateUserPayload) SetDescription(v *string) {
+	o.Description = v
+}
+
+// GetWrite returns the Write field value
+func (o *CreateUserPayload) GetWrite() *bool {
+	if o == nil {
+		var ret *bool
+		return ret
+	}
+
+	return o.Write
+}
+
+// GetWriteOk returns a tuple with the Write field value
+// and a boolean to check if the value has been set.
+func (o *CreateUserPayload) GetWriteOk() (*bool, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Write, true
+}
+
+// SetWrite sets field value
+func (o *CreateUserPayload) SetWrite(v *bool) {
+	o.Write = v
+}
+
+func (o CreateUserPayload) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["description"] = o.Description
+	toSerialize["write"] = o.Write
+	return toSerialize, nil
+}
+
+type NullableCreateUserPayload struct {
+	value *CreateUserPayload
+	isSet bool
+}
+
+func (v NullableCreateUserPayload) Get() *CreateUserPayload {
+	return v.value
+}
+
+func (v *NullableCreateUserPayload) Set(val *CreateUserPayload) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableCreateUserPayload) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableCreateUserPayload) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableCreateUserPayload(val *CreateUserPayload) *NullableCreateUserPayload {
+	return &NullableCreateUserPayload{value: val, isSet: true}
+}
+
+func (v NullableCreateUserPayload) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableCreateUserPayload) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_instance.go b/services/secretsmanager/model_instance.go
index 82894a8b2..74c24ffec 100644
--- a/services/secretsmanager/model_instance.go
+++ b/services/secretsmanager/model_instance.go
@@ -10,6 +10,13 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the Instance type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &Instance{}
+
 // Instance struct for Instance
 type Instance struct {
 	// The API endpoint for connecting to the secrets engine.
@@ -38,3 +45,350 @@ type Instance struct {
 	UpdateFinishedDate *string `json:"updateFinishedDate,omitempty"`
 	UpdateStartDate    *string `json:"updateStartDate,omitempty"`
 }
+
+type _Instance Instance
+
+// NewInstance instantiates a new Instance object
+// 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 NewInstance(apiUrl *string, creationStartDate *string, id *string, name *string, secretCount *int64, secretsEngine *string, state *string) *Instance {
+	this := Instance{}
+	this.ApiUrl = apiUrl
+	this.CreationStartDate = creationStartDate
+	this.Id = id
+	this.Name = name
+	this.SecretCount = secretCount
+	this.SecretsEngine = secretsEngine
+	this.State = state
+	return &this
+}
+
+// NewInstanceWithDefaults instantiates a new Instance object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewInstanceWithDefaults() *Instance {
+	this := Instance{}
+	return &this
+}
+
+// GetApiUrl returns the ApiUrl field value
+func (o *Instance) GetApiUrl() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.ApiUrl
+}
+
+// GetApiUrlOk returns a tuple with the ApiUrl field value
+// and a boolean to check if the value has been set.
+func (o *Instance) GetApiUrlOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.ApiUrl, true
+}
+
+// SetApiUrl sets field value
+func (o *Instance) SetApiUrl(v *string) {
+	o.ApiUrl = v
+}
+
+// GetCreationFinishedDate returns the CreationFinishedDate field value if set, zero value otherwise.
+func (o *Instance) GetCreationFinishedDate() *string {
+	if o == nil || IsNil(o.CreationFinishedDate) {
+		var ret *string
+		return ret
+	}
+	return o.CreationFinishedDate
+}
+
+// GetCreationFinishedDateOk returns a tuple with the CreationFinishedDate field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Instance) GetCreationFinishedDateOk() (*string, bool) {
+	if o == nil || IsNil(o.CreationFinishedDate) {
+		return nil, false
+	}
+	return o.CreationFinishedDate, true
+}
+
+// HasCreationFinishedDate returns a boolean if a field has been set.
+func (o *Instance) HasCreationFinishedDate() bool {
+	if o != nil && !IsNil(o.CreationFinishedDate) {
+		return true
+	}
+
+	return false
+}
+
+// SetCreationFinishedDate gets a reference to the given string and assigns it to the CreationFinishedDate field.
+func (o *Instance) SetCreationFinishedDate(v *string) {
+	o.CreationFinishedDate = v
+}
+
+// GetCreationStartDate returns the CreationStartDate field value
+func (o *Instance) GetCreationStartDate() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.CreationStartDate
+}
+
+// GetCreationStartDateOk returns a tuple with the CreationStartDate field value
+// and a boolean to check if the value has been set.
+func (o *Instance) GetCreationStartDateOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.CreationStartDate, true
+}
+
+// SetCreationStartDate sets field value
+func (o *Instance) SetCreationStartDate(v *string) {
+	o.CreationStartDate = v
+}
+
+// GetId returns the Id field value
+func (o *Instance) GetId() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Id
+}
+
+// GetIdOk returns a tuple with the Id field value
+// and a boolean to check if the value has been set.
+func (o *Instance) GetIdOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Id, true
+}
+
+// SetId sets field value
+func (o *Instance) SetId(v *string) {
+	o.Id = v
+}
+
+// GetName returns the Name field value
+func (o *Instance) GetName() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Name
+}
+
+// GetNameOk returns a tuple with the Name field value
+// and a boolean to check if the value has been set.
+func (o *Instance) GetNameOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Name, true
+}
+
+// SetName sets field value
+func (o *Instance) SetName(v *string) {
+	o.Name = v
+}
+
+// GetSecretCount returns the SecretCount field value
+func (o *Instance) GetSecretCount() *int64 {
+	if o == nil {
+		var ret *int64
+		return ret
+	}
+
+	return o.SecretCount
+}
+
+// GetSecretCountOk returns a tuple with the SecretCount field value
+// and a boolean to check if the value has been set.
+func (o *Instance) GetSecretCountOk() (*int64, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.SecretCount, true
+}
+
+// SetSecretCount sets field value
+func (o *Instance) SetSecretCount(v *int64) {
+	o.SecretCount = v
+}
+
+// GetSecretsEngine returns the SecretsEngine field value
+func (o *Instance) GetSecretsEngine() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.SecretsEngine
+}
+
+// GetSecretsEngineOk returns a tuple with the SecretsEngine field value
+// and a boolean to check if the value has been set.
+func (o *Instance) GetSecretsEngineOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.SecretsEngine, true
+}
+
+// SetSecretsEngine sets field value
+func (o *Instance) SetSecretsEngine(v *string) {
+	o.SecretsEngine = v
+}
+
+// GetState returns the State field value
+func (o *Instance) GetState() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.State
+}
+
+// GetStateOk returns a tuple with the State field value
+// and a boolean to check if the value has been set.
+func (o *Instance) GetStateOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.State, true
+}
+
+// SetState sets field value
+func (o *Instance) SetState(v *string) {
+	o.State = v
+}
+
+// GetUpdateFinishedDate returns the UpdateFinishedDate field value if set, zero value otherwise.
+func (o *Instance) GetUpdateFinishedDate() *string {
+	if o == nil || IsNil(o.UpdateFinishedDate) {
+		var ret *string
+		return ret
+	}
+	return o.UpdateFinishedDate
+}
+
+// GetUpdateFinishedDateOk returns a tuple with the UpdateFinishedDate field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Instance) GetUpdateFinishedDateOk() (*string, bool) {
+	if o == nil || IsNil(o.UpdateFinishedDate) {
+		return nil, false
+	}
+	return o.UpdateFinishedDate, true
+}
+
+// HasUpdateFinishedDate returns a boolean if a field has been set.
+func (o *Instance) HasUpdateFinishedDate() bool {
+	if o != nil && !IsNil(o.UpdateFinishedDate) {
+		return true
+	}
+
+	return false
+}
+
+// SetUpdateFinishedDate gets a reference to the given string and assigns it to the UpdateFinishedDate field.
+func (o *Instance) SetUpdateFinishedDate(v *string) {
+	o.UpdateFinishedDate = v
+}
+
+// GetUpdateStartDate returns the UpdateStartDate field value if set, zero value otherwise.
+func (o *Instance) GetUpdateStartDate() *string {
+	if o == nil || IsNil(o.UpdateStartDate) {
+		var ret *string
+		return ret
+	}
+	return o.UpdateStartDate
+}
+
+// GetUpdateStartDateOk returns a tuple with the UpdateStartDate field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *Instance) GetUpdateStartDateOk() (*string, bool) {
+	if o == nil || IsNil(o.UpdateStartDate) {
+		return nil, false
+	}
+	return o.UpdateStartDate, true
+}
+
+// HasUpdateStartDate returns a boolean if a field has been set.
+func (o *Instance) HasUpdateStartDate() bool {
+	if o != nil && !IsNil(o.UpdateStartDate) {
+		return true
+	}
+
+	return false
+}
+
+// SetUpdateStartDate gets a reference to the given string and assigns it to the UpdateStartDate field.
+func (o *Instance) SetUpdateStartDate(v *string) {
+	o.UpdateStartDate = v
+}
+
+func (o Instance) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["apiUrl"] = o.ApiUrl
+	if !IsNil(o.CreationFinishedDate) {
+		toSerialize["creationFinishedDate"] = o.CreationFinishedDate
+	}
+	toSerialize["creationStartDate"] = o.CreationStartDate
+	toSerialize["id"] = o.Id
+	toSerialize["name"] = o.Name
+	toSerialize["secretCount"] = o.SecretCount
+	toSerialize["secretsEngine"] = o.SecretsEngine
+	toSerialize["state"] = o.State
+	if !IsNil(o.UpdateFinishedDate) {
+		toSerialize["updateFinishedDate"] = o.UpdateFinishedDate
+	}
+	if !IsNil(o.UpdateStartDate) {
+		toSerialize["updateStartDate"] = o.UpdateStartDate
+	}
+	return toSerialize, nil
+}
+
+type NullableInstance struct {
+	value *Instance
+	isSet bool
+}
+
+func (v NullableInstance) Get() *Instance {
+	return v.value
+}
+
+func (v *NullableInstance) Set(val *Instance) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInstance) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInstance) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInstance(val *Instance) *NullableInstance {
+	return &NullableInstance{value: val, isSet: true}
+}
+
+func (v NullableInstance) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInstance) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_list_acls_response.go b/services/secretsmanager/model_list_acls_response.go
index 4c6b0ff5f..9df5b95ef 100644
--- a/services/secretsmanager/model_list_acls_response.go
+++ b/services/secretsmanager/model_list_acls_response.go
@@ -10,8 +10,101 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the ListACLsResponse type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &ListACLsResponse{}
+
 // ListACLsResponse struct for ListACLsResponse
 type ListACLsResponse struct {
 	// REQUIRED
 	Acls *[]ACL `json:"acls"`
 }
+
+type _ListACLsResponse ListACLsResponse
+
+// NewListACLsResponse instantiates a new ListACLsResponse object
+// 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 NewListACLsResponse(acls *[]ACL) *ListACLsResponse {
+	this := ListACLsResponse{}
+	this.Acls = acls
+	return &this
+}
+
+// NewListACLsResponseWithDefaults instantiates a new ListACLsResponse object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewListACLsResponseWithDefaults() *ListACLsResponse {
+	this := ListACLsResponse{}
+	return &this
+}
+
+// GetAcls returns the Acls field value
+func (o *ListACLsResponse) GetAcls() *[]ACL {
+	if o == nil {
+		var ret *[]ACL
+		return ret
+	}
+
+	return o.Acls
+}
+
+// GetAclsOk returns a tuple with the Acls field value
+// and a boolean to check if the value has been set.
+func (o *ListACLsResponse) GetAclsOk() (*[]ACL, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Acls, true
+}
+
+// SetAcls sets field value
+func (o *ListACLsResponse) SetAcls(v *[]ACL) {
+	o.Acls = v
+}
+
+func (o ListACLsResponse) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["acls"] = o.Acls
+	return toSerialize, nil
+}
+
+type NullableListACLsResponse struct {
+	value *ListACLsResponse
+	isSet bool
+}
+
+func (v NullableListACLsResponse) Get() *ListACLsResponse {
+	return v.value
+}
+
+func (v *NullableListACLsResponse) Set(val *ListACLsResponse) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableListACLsResponse) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableListACLsResponse) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableListACLsResponse(val *ListACLsResponse) *NullableListACLsResponse {
+	return &NullableListACLsResponse{value: val, isSet: true}
+}
+
+func (v NullableListACLsResponse) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableListACLsResponse) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_list_instances_response.go b/services/secretsmanager/model_list_instances_response.go
index 21e92436b..bc0434a7f 100644
--- a/services/secretsmanager/model_list_instances_response.go
+++ b/services/secretsmanager/model_list_instances_response.go
@@ -10,8 +10,101 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the ListInstancesResponse type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &ListInstancesResponse{}
+
 // ListInstancesResponse struct for ListInstancesResponse
 type ListInstancesResponse struct {
 	// REQUIRED
 	Instances *[]Instance `json:"instances"`
 }
+
+type _ListInstancesResponse ListInstancesResponse
+
+// NewListInstancesResponse instantiates a new ListInstancesResponse object
+// 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 NewListInstancesResponse(instances *[]Instance) *ListInstancesResponse {
+	this := ListInstancesResponse{}
+	this.Instances = instances
+	return &this
+}
+
+// NewListInstancesResponseWithDefaults instantiates a new ListInstancesResponse object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewListInstancesResponseWithDefaults() *ListInstancesResponse {
+	this := ListInstancesResponse{}
+	return &this
+}
+
+// GetInstances returns the Instances field value
+func (o *ListInstancesResponse) GetInstances() *[]Instance {
+	if o == nil {
+		var ret *[]Instance
+		return ret
+	}
+
+	return o.Instances
+}
+
+// GetInstancesOk returns a tuple with the Instances field value
+// and a boolean to check if the value has been set.
+func (o *ListInstancesResponse) GetInstancesOk() (*[]Instance, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Instances, true
+}
+
+// SetInstances sets field value
+func (o *ListInstancesResponse) SetInstances(v *[]Instance) {
+	o.Instances = v
+}
+
+func (o ListInstancesResponse) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["instances"] = o.Instances
+	return toSerialize, nil
+}
+
+type NullableListInstancesResponse struct {
+	value *ListInstancesResponse
+	isSet bool
+}
+
+func (v NullableListInstancesResponse) Get() *ListInstancesResponse {
+	return v.value
+}
+
+func (v *NullableListInstancesResponse) Set(val *ListInstancesResponse) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableListInstancesResponse) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableListInstancesResponse) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableListInstancesResponse(val *ListInstancesResponse) *NullableListInstancesResponse {
+	return &NullableListInstancesResponse{value: val, isSet: true}
+}
+
+func (v NullableListInstancesResponse) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableListInstancesResponse) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_list_users_response.go b/services/secretsmanager/model_list_users_response.go
index 6ea1967b0..5a21c782d 100644
--- a/services/secretsmanager/model_list_users_response.go
+++ b/services/secretsmanager/model_list_users_response.go
@@ -10,8 +10,101 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the ListUsersResponse type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &ListUsersResponse{}
+
 // ListUsersResponse struct for ListUsersResponse
 type ListUsersResponse struct {
 	// REQUIRED
 	Users *[]User `json:"users"`
 }
+
+type _ListUsersResponse ListUsersResponse
+
+// NewListUsersResponse instantiates a new ListUsersResponse object
+// 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 NewListUsersResponse(users *[]User) *ListUsersResponse {
+	this := ListUsersResponse{}
+	this.Users = users
+	return &this
+}
+
+// NewListUsersResponseWithDefaults instantiates a new ListUsersResponse object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewListUsersResponseWithDefaults() *ListUsersResponse {
+	this := ListUsersResponse{}
+	return &this
+}
+
+// GetUsers returns the Users field value
+func (o *ListUsersResponse) GetUsers() *[]User {
+	if o == nil {
+		var ret *[]User
+		return ret
+	}
+
+	return o.Users
+}
+
+// GetUsersOk returns a tuple with the Users field value
+// and a boolean to check if the value has been set.
+func (o *ListUsersResponse) GetUsersOk() (*[]User, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Users, true
+}
+
+// SetUsers sets field value
+func (o *ListUsersResponse) SetUsers(v *[]User) {
+	o.Users = v
+}
+
+func (o ListUsersResponse) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["users"] = o.Users
+	return toSerialize, nil
+}
+
+type NullableListUsersResponse struct {
+	value *ListUsersResponse
+	isSet bool
+}
+
+func (v NullableListUsersResponse) Get() *ListUsersResponse {
+	return v.value
+}
+
+func (v *NullableListUsersResponse) Set(val *ListUsersResponse) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableListUsersResponse) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableListUsersResponse) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableListUsersResponse(val *ListUsersResponse) *NullableListUsersResponse {
+	return &NullableListUsersResponse{value: val, isSet: true}
+}
+
+func (v NullableListUsersResponse) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableListUsersResponse) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_update_acl_payload.go b/services/secretsmanager/model_update_acl_payload.go
index bea51ac50..978b67d0f 100644
--- a/services/secretsmanager/model_update_acl_payload.go
+++ b/services/secretsmanager/model_update_acl_payload.go
@@ -10,9 +10,102 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the UpdateACLPayload type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &UpdateACLPayload{}
+
 // UpdateACLPayload struct for UpdateACLPayload
 type UpdateACLPayload struct {
 	// The given IP/IP Range that is permitted to access.
 	// REQUIRED
 	Cidr *string `json:"cidr"`
 }
+
+type _UpdateACLPayload UpdateACLPayload
+
+// NewUpdateACLPayload instantiates a new UpdateACLPayload object
+// 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 NewUpdateACLPayload(cidr *string) *UpdateACLPayload {
+	this := UpdateACLPayload{}
+	this.Cidr = cidr
+	return &this
+}
+
+// NewUpdateACLPayloadWithDefaults instantiates a new UpdateACLPayload object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewUpdateACLPayloadWithDefaults() *UpdateACLPayload {
+	this := UpdateACLPayload{}
+	return &this
+}
+
+// GetCidr returns the Cidr field value
+func (o *UpdateACLPayload) GetCidr() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Cidr
+}
+
+// GetCidrOk returns a tuple with the Cidr field value
+// and a boolean to check if the value has been set.
+func (o *UpdateACLPayload) GetCidrOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Cidr, true
+}
+
+// SetCidr sets field value
+func (o *UpdateACLPayload) SetCidr(v *string) {
+	o.Cidr = v
+}
+
+func (o UpdateACLPayload) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["cidr"] = o.Cidr
+	return toSerialize, nil
+}
+
+type NullableUpdateACLPayload struct {
+	value *UpdateACLPayload
+	isSet bool
+}
+
+func (v NullableUpdateACLPayload) Get() *UpdateACLPayload {
+	return v.value
+}
+
+func (v *NullableUpdateACLPayload) Set(val *UpdateACLPayload) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableUpdateACLPayload) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableUpdateACLPayload) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableUpdateACLPayload(val *UpdateACLPayload) *NullableUpdateACLPayload {
+	return &NullableUpdateACLPayload{value: val, isSet: true}
+}
+
+func (v NullableUpdateACLPayload) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableUpdateACLPayload) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_update_acls_payload.go b/services/secretsmanager/model_update_acls_payload.go
index 85b9748df..75a4ecb7e 100644
--- a/services/secretsmanager/model_update_acls_payload.go
+++ b/services/secretsmanager/model_update_acls_payload.go
@@ -10,7 +10,107 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the UpdateACLsPayload type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &UpdateACLsPayload{}
+
 // UpdateACLsPayload struct for UpdateACLsPayload
 type UpdateACLsPayload struct {
 	Cidrs *[]UpdateACLPayload `json:"cidrs,omitempty"`
 }
+
+// NewUpdateACLsPayload instantiates a new UpdateACLsPayload object
+// 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 NewUpdateACLsPayload() *UpdateACLsPayload {
+	this := UpdateACLsPayload{}
+	return &this
+}
+
+// NewUpdateACLsPayloadWithDefaults instantiates a new UpdateACLsPayload object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewUpdateACLsPayloadWithDefaults() *UpdateACLsPayload {
+	this := UpdateACLsPayload{}
+	return &this
+}
+
+// GetCidrs returns the Cidrs field value if set, zero value otherwise.
+func (o *UpdateACLsPayload) GetCidrs() *[]UpdateACLPayload {
+	if o == nil || IsNil(o.Cidrs) {
+		var ret *[]UpdateACLPayload
+		return ret
+	}
+	return o.Cidrs
+}
+
+// GetCidrsOk returns a tuple with the Cidrs field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *UpdateACLsPayload) GetCidrsOk() (*[]UpdateACLPayload, bool) {
+	if o == nil || IsNil(o.Cidrs) {
+		return nil, false
+	}
+	return o.Cidrs, true
+}
+
+// HasCidrs returns a boolean if a field has been set.
+func (o *UpdateACLsPayload) HasCidrs() bool {
+	if o != nil && !IsNil(o.Cidrs) {
+		return true
+	}
+
+	return false
+}
+
+// SetCidrs gets a reference to the given []UpdateACLPayload and assigns it to the Cidrs field.
+func (o *UpdateACLsPayload) SetCidrs(v *[]UpdateACLPayload) {
+	o.Cidrs = v
+}
+
+func (o UpdateACLsPayload) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	if !IsNil(o.Cidrs) {
+		toSerialize["cidrs"] = o.Cidrs
+	}
+	return toSerialize, nil
+}
+
+type NullableUpdateACLsPayload struct {
+	value *UpdateACLsPayload
+	isSet bool
+}
+
+func (v NullableUpdateACLsPayload) Get() *UpdateACLsPayload {
+	return v.value
+}
+
+func (v *NullableUpdateACLsPayload) Set(val *UpdateACLsPayload) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableUpdateACLsPayload) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableUpdateACLsPayload) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableUpdateACLsPayload(val *UpdateACLsPayload) *NullableUpdateACLsPayload {
+	return &NullableUpdateACLsPayload{value: val, isSet: true}
+}
+
+func (v NullableUpdateACLsPayload) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableUpdateACLsPayload) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_update_instance_payload.go b/services/secretsmanager/model_update_instance_payload.go
index f46e25877..0e9759fce 100644
--- a/services/secretsmanager/model_update_instance_payload.go
+++ b/services/secretsmanager/model_update_instance_payload.go
@@ -10,9 +10,102 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the UpdateInstancePayload type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &UpdateInstancePayload{}
+
 // UpdateInstancePayload struct for UpdateInstancePayload
 type UpdateInstancePayload struct {
 	// A user chosen name to distinguish multiple secrets manager instances.
 	// REQUIRED
 	Name *string `json:"name"`
 }
+
+type _UpdateInstancePayload UpdateInstancePayload
+
+// NewUpdateInstancePayload instantiates a new UpdateInstancePayload object
+// 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 NewUpdateInstancePayload(name *string) *UpdateInstancePayload {
+	this := UpdateInstancePayload{}
+	this.Name = name
+	return &this
+}
+
+// NewUpdateInstancePayloadWithDefaults instantiates a new UpdateInstancePayload object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewUpdateInstancePayloadWithDefaults() *UpdateInstancePayload {
+	this := UpdateInstancePayload{}
+	return &this
+}
+
+// GetName returns the Name field value
+func (o *UpdateInstancePayload) GetName() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Name
+}
+
+// GetNameOk returns a tuple with the Name field value
+// and a boolean to check if the value has been set.
+func (o *UpdateInstancePayload) GetNameOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Name, true
+}
+
+// SetName sets field value
+func (o *UpdateInstancePayload) SetName(v *string) {
+	o.Name = v
+}
+
+func (o UpdateInstancePayload) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["name"] = o.Name
+	return toSerialize, nil
+}
+
+type NullableUpdateInstancePayload struct {
+	value *UpdateInstancePayload
+	isSet bool
+}
+
+func (v NullableUpdateInstancePayload) Get() *UpdateInstancePayload {
+	return v.value
+}
+
+func (v *NullableUpdateInstancePayload) Set(val *UpdateInstancePayload) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableUpdateInstancePayload) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableUpdateInstancePayload) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableUpdateInstancePayload(val *UpdateInstancePayload) *NullableUpdateInstancePayload {
+	return &NullableUpdateInstancePayload{value: val, isSet: true}
+}
+
+func (v NullableUpdateInstancePayload) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableUpdateInstancePayload) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_update_user_payload.go b/services/secretsmanager/model_update_user_payload.go
index 5bc46daf3..4028bfa17 100644
--- a/services/secretsmanager/model_update_user_payload.go
+++ b/services/secretsmanager/model_update_user_payload.go
@@ -10,8 +10,108 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the UpdateUserPayload type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &UpdateUserPayload{}
+
 // UpdateUserPayload struct for UpdateUserPayload
 type UpdateUserPayload struct {
 	// Is true if the user has write access to the secrets engine. Is false for a read-only user.
 	Write *bool `json:"write,omitempty"`
 }
+
+// NewUpdateUserPayload instantiates a new UpdateUserPayload object
+// 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 NewUpdateUserPayload() *UpdateUserPayload {
+	this := UpdateUserPayload{}
+	return &this
+}
+
+// NewUpdateUserPayloadWithDefaults instantiates a new UpdateUserPayload object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewUpdateUserPayloadWithDefaults() *UpdateUserPayload {
+	this := UpdateUserPayload{}
+	return &this
+}
+
+// GetWrite returns the Write field value if set, zero value otherwise.
+func (o *UpdateUserPayload) GetWrite() *bool {
+	if o == nil || IsNil(o.Write) {
+		var ret *bool
+		return ret
+	}
+	return o.Write
+}
+
+// GetWriteOk returns a tuple with the Write field value if set, nil otherwise
+// and a boolean to check if the value has been set.
+func (o *UpdateUserPayload) GetWriteOk() (*bool, bool) {
+	if o == nil || IsNil(o.Write) {
+		return nil, false
+	}
+	return o.Write, true
+}
+
+// HasWrite returns a boolean if a field has been set.
+func (o *UpdateUserPayload) HasWrite() bool {
+	if o != nil && !IsNil(o.Write) {
+		return true
+	}
+
+	return false
+}
+
+// SetWrite gets a reference to the given bool and assigns it to the Write field.
+func (o *UpdateUserPayload) SetWrite(v *bool) {
+	o.Write = v
+}
+
+func (o UpdateUserPayload) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	if !IsNil(o.Write) {
+		toSerialize["write"] = o.Write
+	}
+	return toSerialize, nil
+}
+
+type NullableUpdateUserPayload struct {
+	value *UpdateUserPayload
+	isSet bool
+}
+
+func (v NullableUpdateUserPayload) Get() *UpdateUserPayload {
+	return v.value
+}
+
+func (v *NullableUpdateUserPayload) Set(val *UpdateUserPayload) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableUpdateUserPayload) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableUpdateUserPayload) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableUpdateUserPayload(val *UpdateUserPayload) *NullableUpdateUserPayload {
+	return &NullableUpdateUserPayload{value: val, isSet: true}
+}
+
+func (v NullableUpdateUserPayload) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableUpdateUserPayload) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
diff --git a/services/secretsmanager/model_user.go b/services/secretsmanager/model_user.go
index 043ba5fd1..5e6048cca 100644
--- a/services/secretsmanager/model_user.go
+++ b/services/secretsmanager/model_user.go
@@ -10,6 +10,13 @@ API version: 1.4.0
 
 package secretsmanager
 
+import (
+	"encoding/json"
+)
+
+// checks if the User type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &User{}
+
 // User struct for User
 type User struct {
 	// A user chosen description to differentiate between multiple users.
@@ -28,3 +35,193 @@ type User struct {
 	// REQUIRED
 	Write *bool `json:"write"`
 }
+
+type _User User
+
+// NewUser instantiates a new User object
+// 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 NewUser(description *string, id *string, password *string, username *string, write *bool) *User {
+	this := User{}
+	this.Description = description
+	this.Id = id
+	this.Password = password
+	this.Username = username
+	this.Write = write
+	return &this
+}
+
+// NewUserWithDefaults instantiates a new User object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewUserWithDefaults() *User {
+	this := User{}
+	return &this
+}
+
+// GetDescription returns the Description field value
+func (o *User) GetDescription() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Description
+}
+
+// GetDescriptionOk returns a tuple with the Description field value
+// and a boolean to check if the value has been set.
+func (o *User) GetDescriptionOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Description, true
+}
+
+// SetDescription sets field value
+func (o *User) SetDescription(v *string) {
+	o.Description = v
+}
+
+// GetId returns the Id field value
+func (o *User) GetId() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Id
+}
+
+// GetIdOk returns a tuple with the Id field value
+// and a boolean to check if the value has been set.
+func (o *User) GetIdOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Id, true
+}
+
+// SetId sets field value
+func (o *User) SetId(v *string) {
+	o.Id = v
+}
+
+// GetPassword returns the Password field value
+func (o *User) GetPassword() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Password
+}
+
+// GetPasswordOk returns a tuple with the Password field value
+// and a boolean to check if the value has been set.
+func (o *User) GetPasswordOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Password, true
+}
+
+// SetPassword sets field value
+func (o *User) SetPassword(v *string) {
+	o.Password = v
+}
+
+// GetUsername returns the Username field value
+func (o *User) GetUsername() *string {
+	if o == nil {
+		var ret *string
+		return ret
+	}
+
+	return o.Username
+}
+
+// GetUsernameOk returns a tuple with the Username field value
+// and a boolean to check if the value has been set.
+func (o *User) GetUsernameOk() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Username, true
+}
+
+// SetUsername sets field value
+func (o *User) SetUsername(v *string) {
+	o.Username = v
+}
+
+// GetWrite returns the Write field value
+func (o *User) GetWrite() *bool {
+	if o == nil {
+		var ret *bool
+		return ret
+	}
+
+	return o.Write
+}
+
+// GetWriteOk returns a tuple with the Write field value
+// and a boolean to check if the value has been set.
+func (o *User) GetWriteOk() (*bool, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return o.Write, true
+}
+
+// SetWrite sets field value
+func (o *User) SetWrite(v *bool) {
+	o.Write = v
+}
+
+func (o User) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["description"] = o.Description
+	toSerialize["id"] = o.Id
+	toSerialize["password"] = o.Password
+	toSerialize["username"] = o.Username
+	toSerialize["write"] = o.Write
+	return toSerialize, nil
+}
+
+type NullableUser struct {
+	value *User
+	isSet bool
+}
+
+func (v NullableUser) Get() *User {
+	return v.value
+}
+
+func (v *NullableUser) Set(val *User) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableUser) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableUser) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableUser(val *User) *NullableUser {
+	return &NullableUser{value: val, isSet: true}
+}
+
+func (v NullableUser) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableUser) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}