added support for system properties on codegen generator module.

Author: HugoMario

modules/swagger-generator/src/main/java/io/swagger/generator/model/Options.java

@@ -11,6 +11,7 @@ public class Options {
     private String modelPackage;
     private String modelNamePrefix;
     private String modelNameSuffix;
+    protected List<String> systemProperties;
     private List<String> instantiationTypes;
     private List<String> typeMappings;
     private List<String> additionalProperties;
@@ -101,6 +102,19 @@ public void setModelNameSuffix(String modelNameSuffix) {
         this.modelNameSuffix = modelNameSuffix;
     }
 
+    public Options systemProperties(List<String> systemProperties) {
+        this.systemProperties = systemProperties;
+        return this;
+    }
+
+    public List<String> getSystemProperties() {
+        return systemProperties;
+    }
+
+    public void setSystemProperties(List<String> systemProperties) {
+        this.systemProperties = systemProperties;
+    }
+
     public Options instantiationTypes(List<String> instantiationTypes) {
         this.instantiationTypes = instantiationTypes;
         return this;

modules/swagger-generator/src/main/java/io/swagger/generator/util/GeneratorUtil.java

@@ -16,6 +16,7 @@
 import static io.swagger.codegen.config.CodegenConfiguratorUtils.applyInstantiationTypesKvpList;
 import static io.swagger.codegen.config.CodegenConfiguratorUtils.applyLanguageSpecificPrimitivesCsvList;
 import static io.swagger.codegen.config.CodegenConfiguratorUtils.applyReservedWordsMappingsKvpList;
+import static io.swagger.codegen.config.CodegenConfiguratorUtils.applySystemPropertiesKvpList;
 import static io.swagger.codegen.config.CodegenConfiguratorUtils.applyTypeMappingsKvpList;
 import static org.apache.commons.lang3.StringUtils.isNotEmpty;
 
@@ -80,6 +81,9 @@ public static ClientOptInput getClientOptInput(GenerationRequest generationReque
         if (options.getRemoveOperationIdPrefix() != null) {
             configurator.setRemoveOperationIdPrefix(options.getRemoveOperationIdPrefix());
         }
+        if (options.getSystemProperties() != null) {
+            applySystemPropertiesKvpList(options.getSystemProperties(), configurator);
+        }
         if (options.getInstantiationTypes() != null) {
             applyInstantiationTypesKvpList(options.getInstantiationTypes(), configurator);
         }
@@ -157,6 +161,15 @@ public static ClientOptInput getClientOptInput(JsonNode node, String outputDir)
             configurator.setRemoveOperationIdPrefix(node.findValue("removeOperationIdPrefix").booleanValue());
         }
 
+        JsonNode systemPropertiesNode = node.findValue("systemProperties");
+        if (systemPropertiesNode != null && systemPropertiesNode.isArray()) {
+            List<String> systemProperties = new ArrayList<>();
+            for (JsonNode jsonNode : systemPropertiesNode) {
+                systemProperties.add(jsonNode.textValue());
+            }
+            applySystemPropertiesKvpList(systemProperties, configurator);
+        }
+
         JsonNode instantiationTypesNode = node.findValue("instantiationTypes");
         if (instantiationTypesNode != null && instantiationTypesNode.isArray()) {
             List<String> instantiationTypes = new ArrayList<>();

modules/swagger-generator/src/main/resources/openapi.yaml

@@ -150,6 +150,12 @@ components:
           type: "string"
           title: "model name suffix"
           description: "PrefixSuffix that will be appended to all model names. Default is the empty string."
+        systemProperties:
+          type: "array"
+          items:
+            type: string
+          title: "System Properties"
+          description: "sets specified system properties in the format of name=value,name=value (or multiple options, each with name=value)"
         instantiationTypes:
           type: "array"
           items: