Merge branch 'master' of https://github.com/OpenAPITools/openapi-generator

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -1841,7 +1841,7 @@ public class DefaultCodegen implements CodegenConfig {
                             .map(s -> ModelUtils.getSimpleRef(s.get$ref()))
                             .collect(Collectors.toSet());
                     if (parentSchemas.contains(schemaName)) {
-                        discriminator.getMappedModels().add(new MappedModel(childName, childName));
+                        discriminator.getMappedModels().add(new MappedModel(childName, toModelName(childName)));
                     }
                 }
             });
@@ -1864,18 +1864,21 @@ public class DefaultCodegen implements CodegenConfig {
     protected void addProperties(Map<String, Schema> properties, List<String> required, Schema
             schema, Map<String, Schema> allSchemas) {
         if (schema instanceof ComposedSchema) {
-            throw new RuntimeException("Please report the issue: Cannot process Composed Schema in addProperties: " + schema);
-            /*
             ComposedSchema composedSchema = (ComposedSchema) schema;
-            if (composedSchema.getAllOf() == null) {
-                return;
-            }
 
             for (Schema component : composedSchema.getAllOf()) {
                 addProperties(properties, required, component, allSchemas);
             }
+
+            if (composedSchema.getOneOf() != null) {
+                throw new RuntimeException("Please report the issue: Cannot process oneOf (Composed Scheme) in addProperties: " + schema);
+            }
+
+            if (composedSchema.getAnyOf() != null) {
+                throw new RuntimeException("Please report the issue: Cannot process anyOf (Composed Schema) in addProperties: " + schema);
+            }
+
             return;
-            */
         }
 
         Schema unaliasSchema = ModelUtils.unaliasSchema(globalSchemas, schema);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java

@@ -117,6 +117,8 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
 
         setReservedWordsLowerCase(
                 Arrays.asList(
+                        // special words
+                        "object",
                         // used as internal variables, can collide with parameter names
                         "localVarPath", "localVarQueryParams", "localVarCollectionQueryParams",
                         "localVarHeaderParams", "localVarFormParams", "localVarPostBody",
@@ -1436,4 +1438,13 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
     public void setParentOverridden(final boolean parentOverridden) {
         this.parentOverridden = parentOverridden;
     }
+
+    @Override
+    protected void addAdditionPropertiesToCodeGenModel(CodegenModel codegenModel, Schema schema) {
+        super.addAdditionPropertiesToCodeGenModel(codegenModel, schema);
+
+        // See https://github.com/OpenAPITools/openapi-generator/pull/1729#issuecomment-449937728
+        codegenModel.additionalPropertiesType = getSchemaType(ModelUtils.getAdditionalProperties(schema));
+        addImport(codegenModel, codegenModel.additionalPropertiesType);
+    }
 }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java

@@ -619,7 +619,15 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
     public String toDefaultValue(Schema p) {
         if (ModelUtils.isBooleanSchema(p)) {
             if (p.getDefault() != null) {
-                if (p.getDefault().toString().equalsIgnoreCase("false"))
+                if (Boolean.valueOf(p.getDefault().toString()) == false)
+                    return "False";
+                else
+                    return "True";
+            }
+            // include fallback to example, default defined as server only
+            // example is not defined as server only
+            if (p.getExample() != null) {
+                if (Boolean.valueOf(p.getExample().toString()) == false)
                     return "False";
                 else
                     return "True";
@@ -632,10 +640,24 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
             if (p.getDefault() != null) {
                 return p.getDefault().toString();
             }
+            // default numbers are not yet returned by v2 spec openAPI results
+            // https://github.com/swagger-api/swagger-parser/issues/971
+            // include fallback to example, default defined as server only
+            // example is not defined as server only
+            if (p.getExample() != null) {
+                return p.getExample().toString();
+            }
         } else if (ModelUtils.isIntegerSchema(p)) {
             if (p.getDefault() != null) {
                 return p.getDefault().toString();
             }
+            // default integers are not yet returned by v2 spec openAPI results
+            // https://github.com/swagger-api/swagger-parser/issues/971
+            // include fallback to example, default defined as server only
+            // example is not defined as server only
+            if (p.getExample() != null) {
+                return p.getExample().toString();
+            }
         } else if (ModelUtils.isStringSchema(p)) {
             if (p.getDefault() != null) {
                 if (Pattern.compile("\r\n|\r|\n").matcher((String) p.getDefault()).find())
@@ -643,6 +665,23 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
                 else
                     return "'" + p.getDefault() + "'";
             }
+            // include fallback to example, default defined as server only
+            // example is not defined as server only
+            if (p.getExample() != null) {
+                if (Pattern.compile("\r\n|\r|\n").matcher((String) p.getExample()).find())
+                    return "'''" + p.getExample() + "'''";
+                else
+                    return "'" + p.getExample() + "'";
+            }
+        } else if (ModelUtils.isArraySchema(p)) {
+            if (p.getDefault() != null) {
+                return p.getDefault().toString();
+            }
+            // include fallback to example, default defined as server only
+            // example is not defined as server only
+            if (p.getExample() != null) {
+                return p.getExample().toString();
+            }
         }
 
         return null;

modules/openapi-generator/src/main/resources/dart/api.mustache

@@ -89,22 +89,22 @@ class {{classname}} {
                                              authNames);
 
     if(response.statusCode >= 400) {
-      throw new ApiException(response.statusCode, response.body);
+      throw new ApiException(response.statusCode, _decodeBodyBytes(response));
     } else if(response.body != null) {
       {{#isListContainer}}
         {{#returnType}}
-      return (apiClient.deserialize(response.body, '{{{returnType}}}') as List).map((item) => item as {{returnBaseType}}).toList();
+      return (apiClient.deserialize(_decodeBodyBytes(response), '{{{returnType}}}') as List).map((item) => item as {{returnBaseType}}).toList();
         {{/returnType}}
       {{/isListContainer}}
       {{^isListContainer}}
         {{#isMapContainer}}
           {{#returnType}}
-      return new {{{returnType}}}.from(apiClient.deserialize(response.body, '{{{returnType}}}'));
+      return new {{{returnType}}}.from(apiClient.deserialize(_decodeBodyBytes(response), '{{{returnType}}}'));
           {{/returnType}};
         {{/isMapContainer}}
         {{^isMapContainer}}
           {{#returnType}}
-      return apiClient.deserialize(response.body, '{{{returnType}}}') as {{{returnType}}};
+      return apiClient.deserialize(_decodeBodyBytes(response), '{{{returnType}}}') as {{{returnType}}};
           {{/returnType}}
         {{/isMapContainer}}
       {{/isListContainer}}

modules/openapi-generator/src/main/resources/dart/api_helper.mustache

@@ -50,3 +50,15 @@ String parameterToString(dynamic value) {
     return value.toString();
   }
 }
+
+/// Returns the decoded body by utf-8 if application/json with the given headers.
+/// Else, returns the decoded body by default algorithm of dart:http.
+/// Because avoid to text garbling when header only contains "application/json" without "; charset=utf-8".
+String _decodeBodyBytes(Response response) {
+  var contentType = response.headers['content-type'];
+  if (contentType != null && contentType.contains("application/json")) {
+    return utf8.decode(response.bodyBytes);
+  } else {
+    return response.body;
+  }
+}

modules/openapi-generator/src/main/resources/dart2/api.mustache

@@ -89,22 +89,22 @@ class {{classname}} {
                                              authNames);
 
     if(response.statusCode >= 400) {
-      throw new ApiException(response.statusCode, response.body);
+      throw new ApiException(response.statusCode, _decodeBodyBytes(response));
     } else if(response.body != null) {
       {{#isListContainer}}
         {{#returnType}}
-      return (apiClient.deserialize(response.body, '{{{returnType}}}') as List).map((item) => item as {{returnBaseType}}).toList();
+      return (apiClient.deserialize(_decodeBodyBytes(response), '{{{returnType}}}') as List).map((item) => item as {{returnBaseType}}).toList();
         {{/returnType}}
       {{/isListContainer}}
       {{^isListContainer}}
         {{#isMapContainer}}
           {{#returnType}}
-      return new {{{returnType}}}.from(apiClient.deserialize(response.body, '{{{returnType}}}'));
+      return new {{{returnType}}}.from(apiClient.deserialize(_decodeBodyBytes(response), '{{{returnType}}}'));
           {{/returnType}};
         {{/isMapContainer}}
         {{^isMapContainer}}
           {{#returnType}}
-      return apiClient.deserialize(response.body, '{{{returnType}}}') as {{{returnType}}};
+      return apiClient.deserialize(_decodeBodyBytes(response), '{{{returnType}}}') as {{{returnType}}};
           {{/returnType}}
         {{/isMapContainer}}
       {{/isListContainer}}

modules/openapi-generator/src/main/resources/dart2/api_helper.mustache

@@ -50,3 +50,15 @@ String parameterToString(dynamic value) {
     return value.toString();
   }
 }
+
+/// Returns the decoded body by utf-8 if application/json with the given headers.
+/// Else, returns the decoded body by default algorithm of dart:http.
+/// Because avoid to text garbling when header only contains "application/json" without "; charset=utf-8".
+String _decodeBodyBytes(Response response) {
+  var contentType = response.headers['content-type'];
+  if (contentType != null && contentType.contains("application/json")) {
+    return utf8.decode(response.bodyBytes);
+  } else {
+    return response.body;
+  }
+}

modules/openapi-generator/src/main/resources/python/model.mustache

@@ -173,7 +173,8 @@ class {{classname}}(object):
 {{#discriminator}}
     def get_real_child_model(self, data):
         """Returns the real base class specified by the discriminator"""
-        discriminator_value = data[self.discriminator]
+        discriminator_key = self.attribute_map[self.discriminator]
+        discriminator_value = data[discriminator_key]
         return self.discriminator_value_class_map.get(discriminator_value)
 
 {{/discriminator}}

modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -1574,3 +1574,63 @@ definitions:
       sourceURI:
         description: 'Test capitalization'
         type: string
+  TypeHolderDefault:
+    type: object
+    required:
+      - string_item
+      - number_item
+      - integer_item
+      - bool_item
+      - array_item
+    properties:
+      string_item:
+        type: string
+        default: what
+      number_item:
+        type: number
+        default: 1.234
+      integer_item:
+        type: integer
+        default: -2
+      bool_item:
+        type: boolean
+        default: true
+      array_item:
+          type: array
+          items:
+            type: integer
+          default:
+            - 0
+            - 1
+            - 2
+            - 3
+  TypeHolderExample:
+    type: object
+    required:
+      - string_item
+      - number_item
+      - integer_item
+      - bool_item
+      - array_item
+    properties:
+      string_item:
+        type: string
+        example: what
+      number_item:
+        type: number
+        example: 1.234
+      integer_item:
+        type: integer
+        example: -2
+      bool_item:
+        type: boolean
+        example: true
+      array_item:
+          type: array
+          items:
+            type: integer
+          example:
+            - 0
+            - 1
+            - 2
+            - 3

samples/client/petstore-security-test/python/.openapi-generator/VERSION

@@ -1 +1 @@
-3.3.4-SNAPSHOT
+4.0.0-SNAPSHOT

samples/client/petstore-security-test/python/README.md

@@ -53,11 +53,11 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.FakeApi(petstore_api.ApiClient(configuration))
-unknown_base_type = petstore_api.UNKNOWN_BASE_TYPE() # UNKNOWN_BASE_TYPE |  (optional)
+test_code_inject____end____rn_n_r = 'test_code_inject____end____rn_n_r_example' # str | To test code injection */ ' \\\" =end -- \\\\r\\\\n \\\\n \\\\r (optional)
 
 try:
     # To test code injection */ ' \" =end -- \\r\\n \\n \\r
-    api_instance.test_code_inject____end__rn_n_r(unknown_base_type=unknown_base_type)
+    api_instance.test_code_inject____end__rn_n_r(test_code_inject____end____rn_n_r=test_code_inject____end____rn_n_r)
 except ApiException as e:
     print("Exception when calling FakeApi->test_code_inject____end__rn_n_r: %s\n" % e)
 

samples/client/petstore-security-test/python/docs/FakeApi.md

@@ -8,7 +8,7 @@ Method | HTTP request | Description
 
 
 # **test_code_inject____end__rn_n_r**
-> test_code_inject____end__rn_n_r(unknown_base_type=unknown_base_type)
+> test_code_inject____end__rn_n_r(test_code_inject____end____rn_n_r=test_code_inject____end____rn_n_r)
 
 To test code injection */ ' \" =end -- \\r\\n \\n \\r
 
@@ -24,11 +24,11 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.FakeApi()
-unknown_base_type = petstore_api.UNKNOWN_BASE_TYPE() # UNKNOWN_BASE_TYPE |  (optional)
+test_code_inject____end____rn_n_r = 'test_code_inject____end____rn_n_r_example' # str | To test code injection */ ' \\\" =end -- \\\\r\\\\n \\\\n \\\\r (optional)
 
 try:
     # To test code injection */ ' \" =end -- \\r\\n \\n \\r
-    api_instance.test_code_inject____end__rn_n_r(unknown_base_type=unknown_base_type)
+    api_instance.test_code_inject____end__rn_n_r(test_code_inject____end____rn_n_r=test_code_inject____end____rn_n_r)
 except ApiException as e:
     print("Exception when calling FakeApi->test_code_inject____end__rn_n_r: %s\n" % e)
 ```
@@ -37,7 +37,7 @@ except ApiException as e:
 
 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
- **unknown_base_type** | [**UNKNOWN_BASE_TYPE**](UNKNOWN_BASE_TYPE.md)|  | [optional] 
+ **test_code_inject____end____rn_n_r** | **str**| To test code injection */ ' \\\" =end -- \\\\r\\\\n \\\\n \\\\r | [optional] 
 
 ### Return type
 
@@ -49,7 +49,7 @@ No authorization required
 
 ### HTTP request headers
 
- - **Content-Type**: application/json, */  \" =end --       
+ - **Content-Type**: application/x-www-form-urlencoded, */  \" =end --       
  - **Accept**: Not defined
 
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)

samples/client/petstore-security-test/python/petstore_api/api/fake_api.py

@@ -43,7 +43,7 @@ class FakeApi(object):
         >>> result = thread.get()
 
         :param async_req bool
-        :param UNKNOWN_BASE_TYPE unknown_base_type:
+        :param str test_code_inject____end____rn_n_r: To test code injection */ ' \\\" =end -- \\\\r\\\\n \\\\n \\\\r
         :return: None
                  If the method is called asynchronously,
                  returns the request thread.
@@ -65,7 +65,7 @@ class FakeApi(object):
         >>> result = thread.get()
 
         :param async_req bool
-        :param UNKNOWN_BASE_TYPE unknown_base_type:
+        :param str test_code_inject____end____rn_n_r: To test code injection */ ' \\\" =end -- \\\\r\\\\n \\\\n \\\\r
         :return: None
                  If the method is called asynchronously,
                  returns the request thread.
@@ -73,7 +73,7 @@ class FakeApi(object):
 
         local_var_params = locals()
 
-        all_params = ['unknown_base_type']  # noqa: E501
+        all_params = ['test_code_inject____end____rn_n_r']  # noqa: E501
         all_params.append('async_req')
         all_params.append('_return_http_data_only')
         all_params.append('_preload_content')
@@ -98,13 +98,13 @@ class FakeApi(object):
 
         form_params = []
         local_var_files = {}
+        if 'test_code_inject____end____rn_n_r' in local_var_params:
+            form_params.append(('test code inject */ ' " =end -- \r\n \n \r', local_var_params['test_code_inject____end____rn_n_r']))  # noqa: E501
 
         body_params = None
-        if 'unknown_base_type' in local_var_params:
-            body_params = local_var_params['unknown_base_type']
         # HTTP header `Content-Type`
         header_params['Content-Type'] = self.api_client.select_header_content_type(  # noqa: E501
-            ['application/json', '*/  \" =end --       '])  # noqa: E501
+            ['application/x-www-form-urlencoded', '*/  \" =end --       '])  # noqa: E501
 
         # Authentication setting
         auth_settings = []  # noqa: E501

samples/client/petstore-security-test/python/petstore_api/api_client.py

@@ -64,7 +64,7 @@ class ApiClient(object):
     _pool = None
 
     def __init__(self, configuration=None, header_name=None, header_value=None,
-                 cookie=None, pool_threads=None):
+                 cookie=None, pool_threads=1):
         if configuration is None:
             configuration = Configuration()
         self.configuration = configuration

samples/client/petstore/csharp/OpenAPIClient/README.md

@@ -169,6 +169,8 @@ Class | Method | HTTP request | Description
  - [Model.Return](docs/Return.md)
  - [Model.SpecialModelName](docs/SpecialModelName.md)
  - [Model.Tag](docs/Tag.md)
+ - [Model.TypeHolderDefault](docs/TypeHolderDefault.md)
+ - [Model.TypeHolderExample](docs/TypeHolderExample.md)
  - [Model.User](docs/User.md)
 
 

samples/client/petstore/csharp/OpenAPIClient/docs/TypeHolderDefault.md

@@ -0,0 +1,13 @@
+# Org.OpenAPITools.Model.TypeHolderDefault
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**StringItem** | **string** |  | [default to "what"]
+**NumberItem** | **decimal?** |  | 
+**IntegerItem** | **int?** |  | 
+**BoolItem** | **bool?** |  | [default to true]
+**ArrayItem** | **List<int?>** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

samples/client/petstore/csharp/OpenAPIClient/docs/TypeHolderExample.md

@@ -0,0 +1,13 @@
+# Org.OpenAPITools.Model.TypeHolderExample
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**StringItem** | **string** |  | 
+**NumberItem** | **decimal?** |  | 
+**IntegerItem** | **int?** |  | 
+**BoolItem** | **bool?** |  | 
+**ArrayItem** | **List<int?>** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools.Test/Model/TypeHolderDefaultTests.cs

@@ -0,0 +1,112 @@
+/* 
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
+using NUnit.Framework;
+
+using System;
+using System.Linq;
+using System.IO;
+using System.Collections.Generic;
+using Org.OpenAPITools.Api;
+using Org.OpenAPITools.Model;
+using Org.OpenAPITools.Client;
+using System.Reflection;
+using Newtonsoft.Json;
+
+namespace Org.OpenAPITools.Test
+{
+    /// <summary>
+    ///  Class for testing TypeHolderDefault
+    /// </summary>
+    /// <remarks>
+    /// This file is automatically generated by OpenAPI Generator (https://openapi-generator.tech).
+    /// Please update the test case below to test the model.
+    /// </remarks>
+    [TestFixture]
+    public class TypeHolderDefaultTests
+    {
+        // TODO uncomment below to declare an instance variable for TypeHolderDefault
+        //private TypeHolderDefault instance;
+
+        /// <summary>
+        /// Setup before each test
+        /// </summary>
+        [SetUp]
+        public void Init()
+        {
+            // TODO uncomment below to create an instance of TypeHolderDefault
+            //instance = new TypeHolderDefault();
+        }
+
+        /// <summary>
+        /// Clean up after each test
+        /// </summary>
+        [TearDown]
+        public void Cleanup()
+        {
+
+        }
+
+        /// <summary>
+        /// Test an instance of TypeHolderDefault
+        /// </summary>
+        [Test]
+        public void TypeHolderDefaultInstanceTest()
+        {
+            // TODO uncomment below to test "IsInstanceOfType" TypeHolderDefault
+            //Assert.IsInstanceOfType<TypeHolderDefault> (instance, "variable 'instance' is a TypeHolderDefault");
+        }
+
+
+        /// <summary>
+        /// Test the property 'StringItem'
+        /// </summary>
+        [Test]
+        public void StringItemTest()
+        {
+            // TODO unit test for the property 'StringItem'
+        }
+        /// <summary>
+        /// Test the property 'NumberItem'
+        /// </summary>
+        [Test]
+        public void NumberItemTest()
+        {
+            // TODO unit test for the property 'NumberItem'
+        }
+        /// <summary>
+        /// Test the property 'IntegerItem'
+        /// </summary>
+        [Test]
+        public void IntegerItemTest()
+        {
+            // TODO unit test for the property 'IntegerItem'
+        }
+        /// <summary>
+        /// Test the property 'BoolItem'
+        /// </summary>
+        [Test]
+        public void BoolItemTest()
+        {
+            // TODO unit test for the property 'BoolItem'
+        }
+        /// <summary>
+        /// Test the property 'ArrayItem'
+        /// </summary>
+        [Test]
+        public void ArrayItemTest()
+        {
+            // TODO unit test for the property 'ArrayItem'
+        }
+
+    }
+
+}

samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools.Test/Model/TypeHolderExampleTests.cs

@@ -0,0 +1,112 @@
+/* 
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
+using NUnit.Framework;
+
+using System;
+using System.Linq;
+using System.IO;
+using System.Collections.Generic;
+using Org.OpenAPITools.Api;
+using Org.OpenAPITools.Model;
+using Org.OpenAPITools.Client;
+using System.Reflection;
+using Newtonsoft.Json;
+
+namespace Org.OpenAPITools.Test
+{
+    /// <summary>
+    ///  Class for testing TypeHolderExample
+    /// </summary>
+    /// <remarks>
+    /// This file is automatically generated by OpenAPI Generator (https://openapi-generator.tech).
+    /// Please update the test case below to test the model.
+    /// </remarks>
+    [TestFixture]
+    public class TypeHolderExampleTests
+    {
+        // TODO uncomment below to declare an instance variable for TypeHolderExample
+        //private TypeHolderExample instance;
+
+        /// <summary>
+        /// Setup before each test
+        /// </summary>
+        [SetUp]
+        public void Init()
+        {
+            // TODO uncomment below to create an instance of TypeHolderExample
+            //instance = new TypeHolderExample();
+        }
+
+        /// <summary>
+        /// Clean up after each test
+        /// </summary>
+        [TearDown]
+        public void Cleanup()
+        {
+
+        }
+
+        /// <summary>
+        /// Test an instance of TypeHolderExample
+        /// </summary>
+        [Test]
+        public void TypeHolderExampleInstanceTest()
+        {
+            // TODO uncomment below to test "IsInstanceOfType" TypeHolderExample
+            //Assert.IsInstanceOfType<TypeHolderExample> (instance, "variable 'instance' is a TypeHolderExample");
+        }
+
+
+        /// <summary>
+        /// Test the property 'StringItem'
+        /// </summary>
+        [Test]
+        public void StringItemTest()
+        {
+            // TODO unit test for the property 'StringItem'
+        }
+        /// <summary>
+        /// Test the property 'NumberItem'
+        /// </summary>
+        [Test]
+        public void NumberItemTest()
+        {
+            // TODO unit test for the property 'NumberItem'
+        }
+        /// <summary>
+        /// Test the property 'IntegerItem'
+        /// </summary>
+        [Test]
+        public void IntegerItemTest()
+        {
+            // TODO unit test for the property 'IntegerItem'
+        }
+        /// <summary>
+        /// Test the property 'BoolItem'
+        /// </summary>
+        [Test]
+        public void BoolItemTest()
+        {
+            // TODO unit test for the property 'BoolItem'
+        }
+        /// <summary>
+        /// Test the property 'ArrayItem'
+        /// </summary>
+        [Test]
+        public void ArrayItemTest()
+        {
+            // TODO unit test for the property 'ArrayItem'
+        }
+
+    }
+
+}

samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools/Model/TypeHolderDefault.cs

@@ -0,0 +1,233 @@
+/* 
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+using System;
+using System.Linq;
+using System.IO;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System.ComponentModel.DataAnnotations;
+using OpenAPIDateConverter = Org.OpenAPITools.Client.OpenAPIDateConverter;
+
+namespace Org.OpenAPITools.Model
+{
+    /// <summary>
+    /// TypeHolderDefault
+    /// </summary>
+    [DataContract]
+    public partial class TypeHolderDefault :  IEquatable<TypeHolderDefault>, IValidatableObject
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TypeHolderDefault" /> class.
+        /// </summary>
+        [JsonConstructorAttribute]
+        protected TypeHolderDefault() { }
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TypeHolderDefault" /> class.
+        /// </summary>
+        /// <param name="stringItem">stringItem (required) (default to &quot;what&quot;).</param>
+        /// <param name="numberItem">numberItem (required).</param>
+        /// <param name="integerItem">integerItem (required).</param>
+        /// <param name="boolItem">boolItem (required) (default to true).</param>
+        /// <param name="arrayItem">arrayItem (required).</param>
+        public TypeHolderDefault(string stringItem = "what", decimal? numberItem = default(decimal?), int? integerItem = default(int?), bool? boolItem = true, List<int?> arrayItem = default(List<int?>))
+        {
+            // to ensure "stringItem" is required (not null)
+            if (stringItem == null)
+            {
+                throw new InvalidDataException("stringItem is a required property for TypeHolderDefault and cannot be null");
+            }
+            else
+            {
+                this.StringItem = stringItem;
+            }
+            // to ensure "numberItem" is required (not null)
+            if (numberItem == null)
+            {
+                throw new InvalidDataException("numberItem is a required property for TypeHolderDefault and cannot be null");
+            }
+            else
+            {
+                this.NumberItem = numberItem;
+            }
+            // to ensure "integerItem" is required (not null)
+            if (integerItem == null)
+            {
+                throw new InvalidDataException("integerItem is a required property for TypeHolderDefault and cannot be null");
+            }
+            else
+            {
+                this.IntegerItem = integerItem;
+            }
+            // to ensure "boolItem" is required (not null)
+            if (boolItem == null)
+            {
+                throw new InvalidDataException("boolItem is a required property for TypeHolderDefault and cannot be null");
+            }
+            else
+            {
+                this.BoolItem = boolItem;
+            }
+            // to ensure "arrayItem" is required (not null)
+            if (arrayItem == null)
+            {
+                throw new InvalidDataException("arrayItem is a required property for TypeHolderDefault and cannot be null");
+            }
+            else
+            {
+                this.ArrayItem = arrayItem;
+            }
+        }
+        
+        /// <summary>
+        /// Gets or Sets StringItem
+        /// </summary>
+        [DataMember(Name="string_item", EmitDefaultValue=false)]
+        public string StringItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets NumberItem
+        /// </summary>
+        [DataMember(Name="number_item", EmitDefaultValue=false)]
+        public decimal? NumberItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets IntegerItem
+        /// </summary>
+        [DataMember(Name="integer_item", EmitDefaultValue=false)]
+        public int? IntegerItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets BoolItem
+        /// </summary>
+        [DataMember(Name="bool_item", EmitDefaultValue=false)]
+        public bool? BoolItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets ArrayItem
+        /// </summary>
+        [DataMember(Name="array_item", EmitDefaultValue=false)]
+        public List<int?> ArrayItem { get; set; }
+
+        /// <summary>
+        /// Returns the string presentation of the object
+        /// </summary>
+        /// <returns>String presentation of the object</returns>
+        public override string ToString()
+        {
+            var sb = new StringBuilder();
+            sb.Append("class TypeHolderDefault {\n");
+            sb.Append("  StringItem: ").Append(StringItem).Append("\n");
+            sb.Append("  NumberItem: ").Append(NumberItem).Append("\n");
+            sb.Append("  IntegerItem: ").Append(IntegerItem).Append("\n");
+            sb.Append("  BoolItem: ").Append(BoolItem).Append("\n");
+            sb.Append("  ArrayItem: ").Append(ArrayItem).Append("\n");
+            sb.Append("}\n");
+            return sb.ToString();
+        }
+  
+        /// <summary>
+        /// Returns the JSON string presentation of the object
+        /// </summary>
+        /// <returns>JSON string presentation of the object</returns>
+        public virtual string ToJson()
+        {
+            return JsonConvert.SerializeObject(this, Formatting.Indented);
+        }
+
+        /// <summary>
+        /// Returns true if objects are equal
+        /// </summary>
+        /// <param name="input">Object to be compared</param>
+        /// <returns>Boolean</returns>
+        public override bool Equals(object input)
+        {
+            return this.Equals(input as TypeHolderDefault);
+        }
+
+        /// <summary>
+        /// Returns true if TypeHolderDefault instances are equal
+        /// </summary>
+        /// <param name="input">Instance of TypeHolderDefault to be compared</param>
+        /// <returns>Boolean</returns>
+        public bool Equals(TypeHolderDefault input)
+        {
+            if (input == null)
+                return false;
+
+            return 
+                (
+                    this.StringItem == input.StringItem ||
+                    (this.StringItem != null &&
+                    this.StringItem.Equals(input.StringItem))
+                ) && 
+                (
+                    this.NumberItem == input.NumberItem ||
+                    (this.NumberItem != null &&
+                    this.NumberItem.Equals(input.NumberItem))
+                ) && 
+                (
+                    this.IntegerItem == input.IntegerItem ||
+                    (this.IntegerItem != null &&
+                    this.IntegerItem.Equals(input.IntegerItem))
+                ) && 
+                (
+                    this.BoolItem == input.BoolItem ||
+                    (this.BoolItem != null &&
+                    this.BoolItem.Equals(input.BoolItem))
+                ) && 
+                (
+                    this.ArrayItem == input.ArrayItem ||
+                    this.ArrayItem != null &&
+                    this.ArrayItem.SequenceEqual(input.ArrayItem)
+                );
+        }
+
+        /// <summary>
+        /// Gets the hash code
+        /// </summary>
+        /// <returns>Hash code</returns>
+        public override int GetHashCode()
+        {
+            unchecked // Overflow is fine, just wrap
+            {
+                int hashCode = 41;
+                if (this.StringItem != null)
+                    hashCode = hashCode * 59 + this.StringItem.GetHashCode();
+                if (this.NumberItem != null)
+                    hashCode = hashCode * 59 + this.NumberItem.GetHashCode();
+                if (this.IntegerItem != null)
+                    hashCode = hashCode * 59 + this.IntegerItem.GetHashCode();
+                if (this.BoolItem != null)
+                    hashCode = hashCode * 59 + this.BoolItem.GetHashCode();
+                if (this.ArrayItem != null)
+                    hashCode = hashCode * 59 + this.ArrayItem.GetHashCode();
+                return hashCode;
+            }
+        }
+
+        /// <summary>
+        /// To validate all properties of the instance
+        /// </summary>
+        /// <param name="validationContext">Validation context</param>
+        /// <returns>Validation Result</returns>
+        IEnumerable<System.ComponentModel.DataAnnotations.ValidationResult> IValidatableObject.Validate(ValidationContext validationContext)
+        {
+            yield break;
+        }
+    }
+
+}

samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools/Model/TypeHolderExample.cs

@@ -0,0 +1,233 @@
+/* 
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+using System;
+using System.Linq;
+using System.IO;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System.ComponentModel.DataAnnotations;
+using OpenAPIDateConverter = Org.OpenAPITools.Client.OpenAPIDateConverter;
+
+namespace Org.OpenAPITools.Model
+{
+    /// <summary>
+    /// TypeHolderExample
+    /// </summary>
+    [DataContract]
+    public partial class TypeHolderExample :  IEquatable<TypeHolderExample>, IValidatableObject
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TypeHolderExample" /> class.
+        /// </summary>
+        [JsonConstructorAttribute]
+        protected TypeHolderExample() { }
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TypeHolderExample" /> class.
+        /// </summary>
+        /// <param name="stringItem">stringItem (required).</param>
+        /// <param name="numberItem">numberItem (required).</param>
+        /// <param name="integerItem">integerItem (required).</param>
+        /// <param name="boolItem">boolItem (required).</param>
+        /// <param name="arrayItem">arrayItem (required).</param>
+        public TypeHolderExample(string stringItem = default(string), decimal? numberItem = default(decimal?), int? integerItem = default(int?), bool? boolItem = default(bool?), List<int?> arrayItem = default(List<int?>))
+        {
+            // to ensure "stringItem" is required (not null)
+            if (stringItem == null)
+            {
+                throw new InvalidDataException("stringItem is a required property for TypeHolderExample and cannot be null");
+            }
+            else
+            {
+                this.StringItem = stringItem;
+            }
+            // to ensure "numberItem" is required (not null)
+            if (numberItem == null)
+            {
+                throw new InvalidDataException("numberItem is a required property for TypeHolderExample and cannot be null");
+            }
+            else
+            {
+                this.NumberItem = numberItem;
+            }
+            // to ensure "integerItem" is required (not null)
+            if (integerItem == null)
+            {
+                throw new InvalidDataException("integerItem is a required property for TypeHolderExample and cannot be null");
+            }
+            else
+            {
+                this.IntegerItem = integerItem;
+            }
+            // to ensure "boolItem" is required (not null)
+            if (boolItem == null)
+            {
+                throw new InvalidDataException("boolItem is a required property for TypeHolderExample and cannot be null");
+            }
+            else
+            {
+                this.BoolItem = boolItem;
+            }
+            // to ensure "arrayItem" is required (not null)
+            if (arrayItem == null)
+            {
+                throw new InvalidDataException("arrayItem is a required property for TypeHolderExample and cannot be null");
+            }
+            else
+            {
+                this.ArrayItem = arrayItem;
+            }
+        }
+        
+        /// <summary>
+        /// Gets or Sets StringItem
+        /// </summary>
+        [DataMember(Name="string_item", EmitDefaultValue=false)]
+        public string StringItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets NumberItem
+        /// </summary>
+        [DataMember(Name="number_item", EmitDefaultValue=false)]
+        public decimal? NumberItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets IntegerItem
+        /// </summary>
+        [DataMember(Name="integer_item", EmitDefaultValue=false)]
+        public int? IntegerItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets BoolItem
+        /// </summary>
+        [DataMember(Name="bool_item", EmitDefaultValue=false)]
+        public bool? BoolItem { get; set; }
+
+        /// <summary>
+        /// Gets or Sets ArrayItem
+        /// </summary>
+        [DataMember(Name="array_item", EmitDefaultValue=false)]
+        public List<int?> ArrayItem { get; set; }
+
+        /// <summary>
+        /// Returns the string presentation of the object
+        /// </summary>
+        /// <returns>String presentation of the object</returns>
+        public override string ToString()
+        {
+            var sb = new StringBuilder();
+            sb.Append("class TypeHolderExample {\n");
+            sb.Append("  StringItem: ").Append(StringItem).Append("\n");
+            sb.Append("  NumberItem: ").Append(NumberItem).Append("\n");
+            sb.Append("  IntegerItem: ").Append(IntegerItem).Append("\n");
+            sb.Append("  BoolItem: ").Append(BoolItem).Append("\n");
+            sb.Append("  ArrayItem: ").Append(ArrayItem).Append("\n");
+            sb.Append("}\n");
+            return sb.ToString();
+        }
+  
+        /// <summary>
+        /// Returns the JSON string presentation of the object
+        /// </summary>
+        /// <returns>JSON string presentation of the object</returns>
+        public virtual string ToJson()
+        {
+            return JsonConvert.SerializeObject(this, Formatting.Indented);
+        }
+
+        /// <summary>
+        /// Returns true if objects are equal
+        /// </summary>
+        /// <param name="input">Object to be compared</param>
+        /// <returns>Boolean</returns>
+        public override bool Equals(object input)
+        {
+            return this.Equals(input as TypeHolderExample);
+        }
+
+        /// <summary>
+        /// Returns true if TypeHolderExample instances are equal
+        /// </summary>
+        /// <param name="input">Instance of TypeHolderExample to be compared</param>
+        /// <returns>Boolean</returns>
+        public bool Equals(TypeHolderExample input)
+        {
+            if (input == null)
+                return false;
+
+            return 
+                (
+                    this.StringItem == input.StringItem ||
+                    (this.StringItem != null &&
+                    this.StringItem.Equals(input.StringItem))
+                ) && 
+                (
+                    this.NumberItem == input.NumberItem ||
+                    (this.NumberItem != null &&
+                    this.NumberItem.Equals(input.NumberItem))
+                ) && 
+                (
+                    this.IntegerItem == input.IntegerItem ||
+                    (this.IntegerItem != null &&
+                    this.IntegerItem.Equals(input.IntegerItem))
+                ) && 
+                (
+                    this.BoolItem == input.BoolItem ||
+                    (this.BoolItem != null &&
+                    this.BoolItem.Equals(input.BoolItem))
+                ) && 
+                (
+                    this.ArrayItem == input.ArrayItem ||
+                    this.ArrayItem != null &&
+                    this.ArrayItem.SequenceEqual(input.ArrayItem)
+                );
+        }
+
+        /// <summary>
+        /// Gets the hash code
+        /// </summary>
+        /// <returns>Hash code</returns>
+        public override int GetHashCode()
+        {
+            unchecked // Overflow is fine, just wrap
+            {
+                int hashCode = 41;
+                if (this.StringItem != null)
+                    hashCode = hashCode * 59 + this.StringItem.GetHashCode();
+                if (this.NumberItem != null)
+                    hashCode = hashCode * 59 + this.NumberItem.GetHashCode();
+                if (this.IntegerItem != null)
+                    hashCode = hashCode * 59 + this.IntegerItem.GetHashCode();
+                if (this.BoolItem != null)
+                    hashCode = hashCode * 59 + this.BoolItem.GetHashCode();
+                if (this.ArrayItem != null)
+                    hashCode = hashCode * 59 + this.ArrayItem.GetHashCode();
+                return hashCode;
+            }
+        }
+
+        /// <summary>
+        /// To validate all properties of the instance
+        /// </summary>
+        /// <param name="validationContext">Validation context</param>
+        /// <returns>Validation Result</returns>
+        IEnumerable<System.ComponentModel.DataAnnotations.ValidationResult> IValidatableObject.Validate(ValidationContext validationContext)
+        {
+            yield break;
+        }
+    }
+
+}

samples/client/petstore/go/go-petstore/README.md

@@ -102,6 +102,8 @@ Class | Method | HTTP request | Description
  - [Return](docs/Return.md)
  - [SpecialModelName](docs/SpecialModelName.md)
  - [Tag](docs/Tag.md)
+ - [TypeHolderDefault](docs/TypeHolderDefault.md)
+ - [TypeHolderExample](docs/TypeHolderExample.md)
  - [User](docs/User.md)
 
 

samples/client/petstore/go/go-petstore/api/openapi.yaml

@@ -1646,6 +1646,59 @@ components:
           description: Test capitalization
           type: string
       type: object
+    TypeHolderDefault:
+      properties:
+        string_item:
+          default: what
+          type: string
+        number_item:
+          type: number
+        integer_item:
+          type: integer
+        bool_item:
+          default: true
+          type: boolean
+        array_item:
+          items:
+            type: integer
+          type: array
+      required:
+      - array_item
+      - bool_item
+      - integer_item
+      - number_item
+      - string_item
+      type: object
+    TypeHolderExample:
+      properties:
+        string_item:
+          example: what
+          type: string
+        number_item:
+          example: 1.234
+          type: number
+        integer_item:
+          example: -2
+          type: integer
+        bool_item:
+          example: true
+          type: boolean
+        array_item:
+          example:
+          - 0
+          - 1
+          - 2
+          - 3
+          items:
+            type: integer
+          type: array
+      required:
+      - array_item
+      - bool_item
+      - integer_item
+      - number_item
+      - string_item
+      type: object
   securitySchemes:
     petstore_auth:
       flows:

samples/client/petstore/go/go-petstore/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**StringItem** | **string** |  | [default to what]
+**NumberItem** | **float32** |  | 
+**IntegerItem** | **int32** |  | 
+**BoolItem** | **bool** |  | [default to true]
+**ArrayItem** | **[]int32** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/petstore/go/go-petstore/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**StringItem** | **string** |  | 
+**NumberItem** | **float32** |  | 
+**IntegerItem** | **int32** |  | 
+**BoolItem** | **bool** |  | 
+**ArrayItem** | **[]int32** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/petstore/go/go-petstore/model_type_holder_default.go

@@ -0,0 +1,18 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * API version: 1.0.0
+ * Generated by: OpenAPI Generator (https://openapi-generator.tech)
+ */
+
+package petstore
+
+type TypeHolderDefault struct {
+	StringItem string `json:"string_item"`
+	NumberItem float32 `json:"number_item"`
+	IntegerItem int32 `json:"integer_item"`
+	BoolItem bool `json:"bool_item"`
+	ArrayItem []int32 `json:"array_item"`
+}

samples/client/petstore/go/go-petstore/model_type_holder_example.go

@@ -0,0 +1,18 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * API version: 1.0.0
+ * Generated by: OpenAPI Generator (https://openapi-generator.tech)
+ */
+
+package petstore
+
+type TypeHolderExample struct {
+	StringItem string `json:"string_item"`
+	NumberItem float32 `json:"number_item"`
+	IntegerItem int32 `json:"integer_item"`
+	BoolItem bool `json:"bool_item"`
+	ArrayItem []int32 `json:"array_item"`
+}

samples/client/petstore/haskell-http-client/lib/OpenAPIPetstore/Model.hs

@@ -1330,6 +1330,104 @@ mkTag =
   , tagName = Nothing
   }
 
+-- ** TypeHolderDefault
+-- | TypeHolderDefault
+data TypeHolderDefault = TypeHolderDefault
+  { typeHolderDefaultStringItem :: !(Text) -- ^ /Required/ "string_item"
+  , typeHolderDefaultNumberItem :: !(Double) -- ^ /Required/ "number_item"
+  , typeHolderDefaultIntegerItem :: !(Int) -- ^ /Required/ "integer_item"
+  , typeHolderDefaultBoolItem :: !(Bool) -- ^ /Required/ "bool_item"
+  , typeHolderDefaultArrayItem :: !([Int]) -- ^ /Required/ "array_item"
+  } deriving (P.Show, P.Eq, P.Typeable)
+
+-- | FromJSON TypeHolderDefault
+instance A.FromJSON TypeHolderDefault where
+  parseJSON = A.withObject "TypeHolderDefault" $ \o ->
+    TypeHolderDefault
+      <$> (o .:  "string_item")
+      <*> (o .:  "number_item")
+      <*> (o .:  "integer_item")
+      <*> (o .:  "bool_item")
+      <*> (o .:  "array_item")
+
+-- | ToJSON TypeHolderDefault
+instance A.ToJSON TypeHolderDefault where
+  toJSON TypeHolderDefault {..} =
+   _omitNulls
+      [ "string_item" .= typeHolderDefaultStringItem
+      , "number_item" .= typeHolderDefaultNumberItem
+      , "integer_item" .= typeHolderDefaultIntegerItem
+      , "bool_item" .= typeHolderDefaultBoolItem
+      , "array_item" .= typeHolderDefaultArrayItem
+      ]
+
+
+-- | Construct a value of type 'TypeHolderDefault' (by applying it's required fields, if any)
+mkTypeHolderDefault
+  :: Text -- ^ 'typeHolderDefaultStringItem' 
+  -> Double -- ^ 'typeHolderDefaultNumberItem' 
+  -> Int -- ^ 'typeHolderDefaultIntegerItem' 
+  -> Bool -- ^ 'typeHolderDefaultBoolItem' 
+  -> [Int] -- ^ 'typeHolderDefaultArrayItem' 
+  -> TypeHolderDefault
+mkTypeHolderDefault typeHolderDefaultStringItem typeHolderDefaultNumberItem typeHolderDefaultIntegerItem typeHolderDefaultBoolItem typeHolderDefaultArrayItem =
+  TypeHolderDefault
+  { typeHolderDefaultStringItem
+  , typeHolderDefaultNumberItem
+  , typeHolderDefaultIntegerItem
+  , typeHolderDefaultBoolItem
+  , typeHolderDefaultArrayItem
+  }
+
+-- ** TypeHolderExample
+-- | TypeHolderExample
+data TypeHolderExample = TypeHolderExample
+  { typeHolderExampleStringItem :: !(Text) -- ^ /Required/ "string_item"
+  , typeHolderExampleNumberItem :: !(Double) -- ^ /Required/ "number_item"
+  , typeHolderExampleIntegerItem :: !(Int) -- ^ /Required/ "integer_item"
+  , typeHolderExampleBoolItem :: !(Bool) -- ^ /Required/ "bool_item"
+  , typeHolderExampleArrayItem :: !([Int]) -- ^ /Required/ "array_item"
+  } deriving (P.Show, P.Eq, P.Typeable)
+
+-- | FromJSON TypeHolderExample
+instance A.FromJSON TypeHolderExample where
+  parseJSON = A.withObject "TypeHolderExample" $ \o ->
+    TypeHolderExample
+      <$> (o .:  "string_item")
+      <*> (o .:  "number_item")
+      <*> (o .:  "integer_item")
+      <*> (o .:  "bool_item")
+      <*> (o .:  "array_item")
+
+-- | ToJSON TypeHolderExample
+instance A.ToJSON TypeHolderExample where
+  toJSON TypeHolderExample {..} =
+   _omitNulls
+      [ "string_item" .= typeHolderExampleStringItem
+      , "number_item" .= typeHolderExampleNumberItem
+      , "integer_item" .= typeHolderExampleIntegerItem
+      , "bool_item" .= typeHolderExampleBoolItem
+      , "array_item" .= typeHolderExampleArrayItem
+      ]
+
+
+-- | Construct a value of type 'TypeHolderExample' (by applying it's required fields, if any)
+mkTypeHolderExample
+  :: Text -- ^ 'typeHolderExampleStringItem' 
+  -> Double -- ^ 'typeHolderExampleNumberItem' 
+  -> Int -- ^ 'typeHolderExampleIntegerItem' 
+  -> Bool -- ^ 'typeHolderExampleBoolItem' 
+  -> [Int] -- ^ 'typeHolderExampleArrayItem' 
+  -> TypeHolderExample
+mkTypeHolderExample typeHolderExampleStringItem typeHolderExampleNumberItem typeHolderExampleIntegerItem typeHolderExampleBoolItem typeHolderExampleArrayItem =
+  TypeHolderExample
+  { typeHolderExampleStringItem
+  , typeHolderExampleNumberItem
+  , typeHolderExampleIntegerItem
+  , typeHolderExampleBoolItem
+  , typeHolderExampleArrayItem
+  }
+
 -- ** User
 -- | User
 data User = User

samples/client/petstore/haskell-http-client/lib/OpenAPIPetstore/ModelLens.hs

@@ -613,6 +613,64 @@ tagNameL f Tag{..} = (\tagName -> Tag { tagName, ..} ) <$> f tagName
 
 
 
+-- * TypeHolderDefault
+
+-- | 'typeHolderDefaultStringItem' Lens
+typeHolderDefaultStringItemL :: Lens_' TypeHolderDefault (Text)
+typeHolderDefaultStringItemL f TypeHolderDefault{..} = (\typeHolderDefaultStringItem -> TypeHolderDefault { typeHolderDefaultStringItem, ..} ) <$> f typeHolderDefaultStringItem
+{-# INLINE typeHolderDefaultStringItemL #-}
+
+-- | 'typeHolderDefaultNumberItem' Lens
+typeHolderDefaultNumberItemL :: Lens_' TypeHolderDefault (Double)
+typeHolderDefaultNumberItemL f TypeHolderDefault{..} = (\typeHolderDefaultNumberItem -> TypeHolderDefault { typeHolderDefaultNumberItem, ..} ) <$> f typeHolderDefaultNumberItem
+{-# INLINE typeHolderDefaultNumberItemL #-}
+
+-- | 'typeHolderDefaultIntegerItem' Lens
+typeHolderDefaultIntegerItemL :: Lens_' TypeHolderDefault (Int)
+typeHolderDefaultIntegerItemL f TypeHolderDefault{..} = (\typeHolderDefaultIntegerItem -> TypeHolderDefault { typeHolderDefaultIntegerItem, ..} ) <$> f typeHolderDefaultIntegerItem
+{-# INLINE typeHolderDefaultIntegerItemL #-}
+
+-- | 'typeHolderDefaultBoolItem' Lens
+typeHolderDefaultBoolItemL :: Lens_' TypeHolderDefault (Bool)
+typeHolderDefaultBoolItemL f TypeHolderDefault{..} = (\typeHolderDefaultBoolItem -> TypeHolderDefault { typeHolderDefaultBoolItem, ..} ) <$> f typeHolderDefaultBoolItem
+{-# INLINE typeHolderDefaultBoolItemL #-}
+
+-- | 'typeHolderDefaultArrayItem' Lens
+typeHolderDefaultArrayItemL :: Lens_' TypeHolderDefault ([Int])
+typeHolderDefaultArrayItemL f TypeHolderDefault{..} = (\typeHolderDefaultArrayItem -> TypeHolderDefault { typeHolderDefaultArrayItem, ..} ) <$> f typeHolderDefaultArrayItem
+{-# INLINE typeHolderDefaultArrayItemL #-}
+
+
+
+-- * TypeHolderExample
+
+-- | 'typeHolderExampleStringItem' Lens
+typeHolderExampleStringItemL :: Lens_' TypeHolderExample (Text)
+typeHolderExampleStringItemL f TypeHolderExample{..} = (\typeHolderExampleStringItem -> TypeHolderExample { typeHolderExampleStringItem, ..} ) <$> f typeHolderExampleStringItem
+{-# INLINE typeHolderExampleStringItemL #-}
+
+-- | 'typeHolderExampleNumberItem' Lens
+typeHolderExampleNumberItemL :: Lens_' TypeHolderExample (Double)
+typeHolderExampleNumberItemL f TypeHolderExample{..} = (\typeHolderExampleNumberItem -> TypeHolderExample { typeHolderExampleNumberItem, ..} ) <$> f typeHolderExampleNumberItem
+{-# INLINE typeHolderExampleNumberItemL #-}
+
+-- | 'typeHolderExampleIntegerItem' Lens
+typeHolderExampleIntegerItemL :: Lens_' TypeHolderExample (Int)
+typeHolderExampleIntegerItemL f TypeHolderExample{..} = (\typeHolderExampleIntegerItem -> TypeHolderExample { typeHolderExampleIntegerItem, ..} ) <$> f typeHolderExampleIntegerItem
+{-# INLINE typeHolderExampleIntegerItemL #-}
+
+-- | 'typeHolderExampleBoolItem' Lens
+typeHolderExampleBoolItemL :: Lens_' TypeHolderExample (Bool)
+typeHolderExampleBoolItemL f TypeHolderExample{..} = (\typeHolderExampleBoolItem -> TypeHolderExample { typeHolderExampleBoolItem, ..} ) <$> f typeHolderExampleBoolItem
+{-# INLINE typeHolderExampleBoolItemL #-}
+
+-- | 'typeHolderExampleArrayItem' Lens
+typeHolderExampleArrayItemL :: Lens_' TypeHolderExample ([Int])
+typeHolderExampleArrayItemL f TypeHolderExample{..} = (\typeHolderExampleArrayItem -> TypeHolderExample { typeHolderExampleArrayItem, ..} ) <$> f typeHolderExampleArrayItem
+{-# INLINE typeHolderExampleArrayItemL #-}
+
+
+
 -- * User
 
 -- | 'userId' Lens

samples/client/petstore/haskell-http-client/openapi.yaml

@@ -1646,6 +1646,59 @@ components:
           description: Test capitalization
           type: string
       type: object
+    TypeHolderDefault:
+      properties:
+        string_item:
+          default: what
+          type: string
+        number_item:
+          type: number
+        integer_item:
+          type: integer
+        bool_item:
+          default: true
+          type: boolean
+        array_item:
+          items:
+            type: integer
+          type: array
+      required:
+      - array_item
+      - bool_item
+      - integer_item
+      - number_item
+      - string_item
+      type: object
+    TypeHolderExample:
+      properties:
+        string_item:
+          example: what
+          type: string
+        number_item:
+          example: 1.234
+          type: number
+        integer_item:
+          example: -2
+          type: integer
+        bool_item:
+          example: true
+          type: boolean
+        array_item:
+          example:
+          - 0
+          - 1
+          - 2
+          - 3
+          items:
+            type: integer
+          type: array
+      required:
+      - array_item
+      - bool_item
+      - integer_item
+      - number_item
+      - string_item
+      type: object
   securitySchemes:
     petstore_auth:
       flows:

samples/client/petstore/haskell-http-client/tests/Instances.hs

@@ -302,6 +302,24 @@ instance Arbitrary Tag where
       <$> arbitrary -- tagId :: Maybe Integer
       <*> arbitrary -- tagName :: Maybe Text
     
+instance Arbitrary TypeHolderDefault where
+  arbitrary =
+    TypeHolderDefault
+      <$> arbitrary -- typeHolderDefaultStringItem :: Text
+      <*> arbitrary -- typeHolderDefaultNumberItem :: Double
+      <*> arbitrary -- typeHolderDefaultIntegerItem :: Int
+      <*> arbitrary -- typeHolderDefaultBoolItem :: Bool
+      <*> arbitrary -- typeHolderDefaultArrayItem :: [Int]
+    
+instance Arbitrary TypeHolderExample where
+  arbitrary =
+    TypeHolderExample
+      <$> arbitrary -- typeHolderExampleStringItem :: Text
+      <*> arbitrary -- typeHolderExampleNumberItem :: Double
+      <*> arbitrary -- typeHolderExampleIntegerItem :: Int
+      <*> arbitrary -- typeHolderExampleBoolItem :: Bool
+      <*> arbitrary -- typeHolderExampleArrayItem :: [Int]
+    
 instance Arbitrary User where
   arbitrary =
     User

samples/client/petstore/haskell-http-client/tests/Test.hs

@@ -53,5 +53,7 @@ main =
       propMimeEq MimeJSON (Proxy :: Proxy ReadOnlyFirst)
       propMimeEq MimeJSON (Proxy :: Proxy SpecialModelName)
       propMimeEq MimeJSON (Proxy :: Proxy Tag)
+      propMimeEq MimeJSON (Proxy :: Proxy TypeHolderDefault)
+      propMimeEq MimeJSON (Proxy :: Proxy TypeHolderExample)
       propMimeEq MimeJSON (Proxy :: Proxy User)
       

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/feign10x/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/feign10x/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/google-api-client/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/google-api-client/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey1/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey1/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey2-java6/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey2-java6/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey2-java6/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,190 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.ObjectUtils;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+  if (this == o) {
+    return true;
+  }
+  if (o == null || getClass() != o.getClass()) {
+    return false;
+  }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return ObjectUtils.equals(this.stringItem, typeHolderDefault.stringItem) &&
+    ObjectUtils.equals(this.numberItem, typeHolderDefault.numberItem) &&
+    ObjectUtils.equals(this.integerItem, typeHolderDefault.integerItem) &&
+    ObjectUtils.equals(this.boolItem, typeHolderDefault.boolItem) &&
+    ObjectUtils.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return ObjectUtils.hashCodeMulti(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey2-java6/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,190 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.ObjectUtils;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+  if (this == o) {
+    return true;
+  }
+  if (o == null || getClass() != o.getClass()) {
+    return false;
+  }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return ObjectUtils.equals(this.stringItem, typeHolderExample.stringItem) &&
+    ObjectUtils.equals(this.numberItem, typeHolderExample.numberItem) &&
+    ObjectUtils.equals(this.integerItem, typeHolderExample.integerItem) &&
+    ObjectUtils.equals(this.boolItem, typeHolderExample.boolItem) &&
+    ObjectUtils.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return ObjectUtils.hashCodeMulti(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey2-java8/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey2-java8/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey2/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey2/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/jersey2/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/jersey2/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/okhttp-gson-parcelableModel/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/okhttp-gson-parcelableModel/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,232 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import android.os.Parcelable;
+import android.os.Parcel;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault implements Parcelable {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem = "what";
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem = true;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault() {
+  }
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+  public void writeToParcel(Parcel out, int flags) {
+    out.writeValue(stringItem);
+    out.writeValue(numberItem);
+    out.writeValue(integerItem);
+    out.writeValue(boolItem);
+    out.writeValue(arrayItem);
+  }
+
+  TypeHolderDefault(Parcel in) {
+    stringItem = (String)in.readValue(null);
+    numberItem = (BigDecimal)in.readValue(BigDecimal.class.getClassLoader());
+    integerItem = (Integer)in.readValue(null);
+    boolItem = (Boolean)in.readValue(null);
+    arrayItem = (List<Integer>)in.readValue(null);
+  }
+
+  public int describeContents() {
+    return 0;
+  }
+
+  public static final Parcelable.Creator<TypeHolderDefault> CREATOR = new Parcelable.Creator<TypeHolderDefault>() {
+    public TypeHolderDefault createFromParcel(Parcel in) {
+      return new TypeHolderDefault(in);
+    }
+    public TypeHolderDefault[] newArray(int size) {
+      return new TypeHolderDefault[size];
+    }
+  };
+}
+

samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,232 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import android.os.Parcelable;
+import android.os.Parcel;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample implements Parcelable {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem;
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample() {
+  }
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+  public void writeToParcel(Parcel out, int flags) {
+    out.writeValue(stringItem);
+    out.writeValue(numberItem);
+    out.writeValue(integerItem);
+    out.writeValue(boolItem);
+    out.writeValue(arrayItem);
+  }
+
+  TypeHolderExample(Parcel in) {
+    stringItem = (String)in.readValue(null);
+    numberItem = (BigDecimal)in.readValue(BigDecimal.class.getClassLoader());
+    integerItem = (Integer)in.readValue(null);
+    boolItem = (Boolean)in.readValue(null);
+    arrayItem = (List<Integer>)in.readValue(null);
+  }
+
+  public int describeContents() {
+    return 0;
+  }
+
+  public static final Parcelable.Creator<TypeHolderExample> CREATOR = new Parcelable.Creator<TypeHolderExample>() {
+    public TypeHolderExample createFromParcel(Parcel in) {
+      return new TypeHolderExample(in);
+    }
+    public TypeHolderExample[] newArray(int size) {
+      return new TypeHolderExample[size];
+    }
+  };
+}
+

samples/client/petstore/java/okhttp-gson/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/okhttp-gson/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem = "what";
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem = true;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem;
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/rest-assured/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/rest-assured/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem = "what";
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem = true;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem;
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean isBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/resteasy/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/resteasy/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/resttemplate-withXml/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/resttemplate-withXml/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,208 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import com.fasterxml.jackson.dataformat.xml.annotation.*;
+import javax.xml.bind.annotation.*;
+
+/**
+ * TypeHolderDefault
+ */
+
+@XmlRootElement(name = "TypeHolderDefault")
+@XmlAccessorType(XmlAccessType.FIELD)
+@JacksonXmlRootElement(localName = "TypeHolderDefault")
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  @JacksonXmlProperty(localName = "string_item")
+  @XmlElement(name = "string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  @JacksonXmlProperty(localName = "number_item")
+  @XmlElement(name = "number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  @JacksonXmlProperty(localName = "integer_item")
+  @XmlElement(name = "integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  @JacksonXmlProperty(localName = "bool_item")
+  @XmlElement(name = "bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  // Is a container wrapped=false
+  // items.name=arrayItem items.baseName=arrayItem items.xmlName= items.xmlNamespace=
+  // items.example= items.type=Integer
+  @XmlElement(name = "arrayItem")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,208 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import com.fasterxml.jackson.dataformat.xml.annotation.*;
+import javax.xml.bind.annotation.*;
+
+/**
+ * TypeHolderExample
+ */
+
+@XmlRootElement(name = "TypeHolderExample")
+@XmlAccessorType(XmlAccessType.FIELD)
+@JacksonXmlRootElement(localName = "TypeHolderExample")
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  @JacksonXmlProperty(localName = "string_item")
+  @XmlElement(name = "string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  @JacksonXmlProperty(localName = "number_item")
+  @XmlElement(name = "number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  @JacksonXmlProperty(localName = "integer_item")
+  @XmlElement(name = "integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  @JacksonXmlProperty(localName = "bool_item")
+  @XmlElement(name = "bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  // Is a container wrapped=false
+  // items.name=arrayItem items.baseName=arrayItem items.xmlName= items.xmlNamespace=
+  // items.example= items.type=Integer
+  @XmlElement(name = "arrayItem")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/resttemplate/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/resttemplate/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,191 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem = "what";
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem = true;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem;
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play24/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2-play24/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2-play24/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @NotNull
+  @Valid
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play24/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @NotNull
+  @Valid
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play25/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2-play25/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2-play25/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @NotNull
+  @Valid
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play25/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @NotNull
+  @Valid
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2-play26/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  @JsonProperty("string_item")
+  private String stringItem = "what";
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem = true;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @NotNull
+  @Valid
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @NotNull
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  @JsonProperty("string_item")
+  private String stringItem;
+
+  @JsonProperty("number_item")
+  private BigDecimal numberItem;
+
+  @JsonProperty("integer_item")
+  private Integer integerItem;
+
+  @JsonProperty("bool_item")
+  private Boolean boolItem;
+
+  @JsonProperty("array_item")
+  private List<Integer> arrayItem = new ArrayList<>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @NotNull
+  @Valid
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @NotNull
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/model/TypeHolderDefault.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderDefault
+ */
+
+public class TypeHolderDefault {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem = "what";
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem = true;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderDefault stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderDefault numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderDefault integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderDefault boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderDefault {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/model/TypeHolderExample.java

@@ -0,0 +1,199 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * TypeHolderExample
+ */
+
+public class TypeHolderExample {
+  public static final String SERIALIZED_NAME_STRING_ITEM = "string_item";
+  @SerializedName(SERIALIZED_NAME_STRING_ITEM)
+  private String stringItem;
+
+  public static final String SERIALIZED_NAME_NUMBER_ITEM = "number_item";
+  @SerializedName(SERIALIZED_NAME_NUMBER_ITEM)
+  private BigDecimal numberItem;
+
+  public static final String SERIALIZED_NAME_INTEGER_ITEM = "integer_item";
+  @SerializedName(SERIALIZED_NAME_INTEGER_ITEM)
+  private Integer integerItem;
+
+  public static final String SERIALIZED_NAME_BOOL_ITEM = "bool_item";
+  @SerializedName(SERIALIZED_NAME_BOOL_ITEM)
+  private Boolean boolItem;
+
+  public static final String SERIALIZED_NAME_ARRAY_ITEM = "array_item";
+  @SerializedName(SERIALIZED_NAME_ARRAY_ITEM)
+  private List<Integer> arrayItem = new ArrayList<Integer>();
+
+  public TypeHolderExample stringItem(String stringItem) {
+    this.stringItem = stringItem;
+    return this;
+  }
+
+   /**
+   * Get stringItem
+   * @return stringItem
+  **/
+  @ApiModelProperty(example = "what", required = true, value = "")
+  public String getStringItem() {
+    return stringItem;
+  }
+
+  public void setStringItem(String stringItem) {
+    this.stringItem = stringItem;
+  }
+
+  public TypeHolderExample numberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+    return this;
+  }
+
+   /**
+   * Get numberItem
+   * @return numberItem
+  **/
+  @ApiModelProperty(example = "1.234", required = true, value = "")
+  public BigDecimal getNumberItem() {
+    return numberItem;
+  }
+
+  public void setNumberItem(BigDecimal numberItem) {
+    this.numberItem = numberItem;
+  }
+
+  public TypeHolderExample integerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+    return this;
+  }
+
+   /**
+   * Get integerItem
+   * @return integerItem
+  **/
+  @ApiModelProperty(example = "-2", required = true, value = "")
+  public Integer getIntegerItem() {
+    return integerItem;
+  }
+
+  public void setIntegerItem(Integer integerItem) {
+    this.integerItem = integerItem;
+  }
+
+  public TypeHolderExample boolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+    return this;
+  }
+
+   /**
+   * Get boolItem
+   * @return boolItem
+  **/
+  @ApiModelProperty(example = "true", required = true, value = "")
+  public Boolean getBoolItem() {
+    return boolItem;
+  }
+
+  public void setBoolItem(Boolean boolItem) {
+    this.boolItem = boolItem;
+  }
+
+  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+    return this;
+  }
+
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+   /**
+   * Get arrayItem
+   * @return arrayItem
+  **/
+  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+  public List<Integer> getArrayItem() {
+    return arrayItem;
+  }
+
+  public void setArrayItem(List<Integer> arrayItem) {
+    this.arrayItem = arrayItem;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TypeHolderExample {\n");
+    
+    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+

samples/client/petstore/java/retrofit2rx/docs/TypeHolderDefault.md

@@ -0,0 +1,14 @@
+
+# TypeHolderDefault
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+

samples/client/petstore/java/retrofit2rx/docs/TypeHolderExample.md

@@ -0,0 +1,14 @@
+
+# TypeHolderExample
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**stringItem** | **String** |  | 
+**numberItem** | [**BigDecimal**](BigDecimal.md) |  | 
+**integerItem** | **Integer** |  | 
+**boolItem** | **Boolean** |  | 
+**arrayItem** | **List<Integer>** |  | 
+
+
+