Fix issue with C# generator when the model name is "File" (#1428)

* fix get schema type in abstract c# class

* update c# petstore sample

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

@@ -160,21 +160,21 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
         typeMapping = new HashMap<String, String>();
         typeMapping.put("string", "string");
         typeMapping.put("binary", "byte[]");
-        typeMapping.put("bytearray", "byte[]");
+        typeMapping.put("ByteArray", "byte[]");
         typeMapping.put("boolean", "bool?");
         typeMapping.put("integer", "int?");
         typeMapping.put("float", "float?");
         typeMapping.put("long", "long?");
         typeMapping.put("double", "double?");
         typeMapping.put("number", "decimal?");
-        typeMapping.put("datetime", "DateTime?");
+        typeMapping.put("DateTime", "DateTime?");
         typeMapping.put("date", "DateTime?");
         typeMapping.put("file", "System.IO.Stream");
         typeMapping.put("array", "List");
         typeMapping.put("list", "List");
         typeMapping.put("map", "Dictionary");
         typeMapping.put("object", "Object");
-        typeMapping.put("uuid", "Guid?");
+        typeMapping.put("UUID", "Guid?");
     }
 
     public void setReturnICollection(boolean returnICollection) {
@@ -766,20 +766,19 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
         String type;
 
         if (openAPIType == null) {
-            openAPIType = ""; // set swagger type to empty string if null
+            LOGGER.error("OpenAPI Type for {} is null. Default to UNKNOWN_OPENAPI_TYPE instead.", p.getName());
+            openAPIType = "UNKNOWN_OPENAPI_TYPE";
         }
 
-        // NOTE: typeMapping here supports things like string/String, long/Long, datetime/DateTime as lowercase keys.
+        if (typeMapping.containsKey(openAPIType)) {
-        //       Should we require explicit casing here (values are not insensitive).
+            type = typeMapping.get(openAPIType);
-        // TODO avoid using toLowerCase as typeMapping should be case-sensitive
-        if (typeMapping.containsKey(openAPIType.toLowerCase(Locale.ROOT))) {
-            type = typeMapping.get(openAPIType.toLowerCase(Locale.ROOT));
             if (languageSpecificPrimitives.contains(type)) {
                 return type;
             }
         } else {
             type = openAPIType;
         }
+
         return toModelName(type);
     }
 

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

@@ -3,8 +3,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**File** | **System.IO.Stream** |  | [optional] 
+**File** | [**File**](File.md) |  | [optional] 
-**Files** | **List<System.IO.Stream>** |  | [optional] 
+**Files** | [**List<File>**](File.md) |  | [optional] 
 
 [[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/Model/FileSchemaTestClass.cs

@@ -35,7 +35,7 @@ namespace Org.OpenAPITools.Model
         /// </summary>
         /// <param name="file">file.</param>
         /// <param name="files">files.</param>
-        public FileSchemaTestClass(System.IO.Stream file = default(System.IO.Stream), List<System.IO.Stream> files = default(List<System.IO.Stream>))
+        public FileSchemaTestClass(File file = default(File), List<File> files = default(List<File>))
         {
             this.File = file;
             this.Files = files;
@@ -45,13 +45,13 @@ namespace Org.OpenAPITools.Model
         /// Gets or Sets File
         /// </summary>
         [DataMember(Name="file", EmitDefaultValue=false)]
-        public System.IO.Stream File { get; set; }
+        public File File { get; set; }
 
         /// <summary>
         /// Gets or Sets Files
         /// </summary>
         [DataMember(Name="files", EmitDefaultValue=false)]
-        public List<System.IO.Stream> Files { get; set; }
+        public List<File> Files { get; set; }
 
         /// <summary>
         /// Returns the string presentation of the object

samples/client/petstore/csharp/OpenAPIClientNet35/.openapi-generator/VERSION

@@ -1 +1 @@
-3.3.2-SNAPSHOT
+3.3.3-SNAPSHOT

samples/client/petstore/csharp/OpenAPIClientNet35/README.md

@@ -106,6 +106,7 @@ Class | Method | HTTP request | Description
 *FakeApi* | [**TestClientModel**](docs/FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 *FakeApi* | [**TestEndpointParameters**](docs/FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 *FakeApi* | [**TestEnumParameters**](docs/FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+*FakeApi* | [**TestGroupParameters**](docs/FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 *FakeApi* | [**TestInlineAdditionalProperties**](docs/FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 *FakeApi* | [**TestJsonFormData**](docs/FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 *FakeClassnameTags123Api* | [**TestClassname**](docs/FakeClassnameTags123Api.md#testclassname) | **PATCH** /fake_classname_test | To test class name in snake case

samples/client/petstore/csharp/OpenAPIClientNet35/docs/FakeApi.md

@@ -13,6 +13,7 @@ Method | HTTP request | Description
 [**TestClientModel**](FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 [**TestEndpointParameters**](FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 [**TestEnumParameters**](FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+[**TestGroupParameters**](FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 [**TestInlineAdditionalProperties**](FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 [**TestJsonFormData**](FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 
@@ -600,6 +601,76 @@ No authorization required
 
 [[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)
 
+<a name="testgroupparameters"></a>
+# **TestGroupParameters**
+> void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+```csharp
+using System;
+using System.Diagnostics;
+using Org.OpenAPITools.Api;
+using Org.OpenAPITools.Client;
+using Org.OpenAPITools.Model;
+
+namespace Example
+{
+    public class TestGroupParametersExample
+    {
+        public void main()
+        {
+            var apiInstance = new FakeApi();
+            var requiredStringGroup = 56;  // int? | Required String in group parameters
+            var requiredBooleanGroup = true;  // bool? | Required Boolean in group parameters
+            var requiredInt64Group = 789;  // long? | Required Integer in group parameters
+            var stringGroup = 56;  // int? | String in group parameters (optional) 
+            var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
+            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+
+            try
+            {
+                // Fake endpoint to test group parameters (optional)
+                apiInstance.TestGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+            }
+            catch (Exception e)
+            {
+                Debug.Print("Exception when calling FakeApi.TestGroupParameters: " + e.Message );
+            }
+        }
+    }
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **requiredStringGroup** | **int?**| Required String in group parameters | 
+ **requiredBooleanGroup** | **bool?**| Required Boolean in group parameters | 
+ **requiredInt64Group** | **long?**| Required Integer in group parameters | 
+ **stringGroup** | **int?**| String in group parameters | [optional] 
+ **booleanGroup** | **bool?**| Boolean in group parameters | [optional] 
+ **int64Group** | **long?**| Integer in group parameters | [optional] 
+
+### Return type
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **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)
+
 <a name="testinlineadditionalproperties"></a>
 # **TestInlineAdditionalProperties**
 > void TestInlineAdditionalProperties (Dictionary<string, string> requestBody)

samples/client/petstore/csharp/OpenAPIClientNet35/docs/FileSchemaTestClass.md

@@ -3,8 +3,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**File** | **System.IO.Stream** |  | [optional] 
+**File** | [**File**](File.md) |  | [optional] 
-**Files** | **List<System.IO.Stream>** |  | [optional] 
+**Files** | [**List<File>**](File.md) |  | [optional] 
 
 [[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/OpenAPIClientNet35/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -256,6 +256,37 @@ namespace Org.OpenAPITools.Api
         /// <returns>ApiResponse of Object(void)</returns>
         ApiResponse<Object> TestEnumParametersWithHttpInfo (List<string> enumHeaderStringArray = null, string enumHeaderString = null, List<string> enumQueryStringArray = null, string enumQueryString = null, int? enumQueryInteger = null, double? enumQueryDouble = null, List<string> enumFormStringArray = null, string enumFormString = null);
         /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+        /// <summary>
         /// test inline additionalProperties
         /// </summary>
         /// <remarks>
@@ -1116,6 +1147,91 @@ namespace Org.OpenAPITools.Api
                 null);
         }
 
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        public void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+             TestGroupParametersWithHttpInfo(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        public ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+            // verify the required parameter 'requiredStringGroup' is set
+            if (requiredStringGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredStringGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredBooleanGroup' is set
+            if (requiredBooleanGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredBooleanGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredInt64Group' is set
+            if (requiredInt64Group == null)
+                throw new ApiException(400, "Missing required parameter 'requiredInt64Group' when calling FakeApi->TestGroupParameters");
+
+            var localVarPath = "/fake";
+            var localVarPathParams = new Dictionary<String, String>();
+            var localVarQueryParams = new List<KeyValuePair<String, String>>();
+            var localVarHeaderParams = new Dictionary<String, String>(this.Configuration.DefaultHeader);
+            var localVarFormParams = new Dictionary<String, String>();
+            var localVarFileParams = new Dictionary<String, FileParameter>();
+            Object localVarPostBody = null;
+
+            // to determine the Content-Type header
+            String[] localVarHttpContentTypes = new String[] {
+            };
+            String localVarHttpContentType = this.Configuration.ApiClient.SelectHeaderContentType(localVarHttpContentTypes);
+
+            // to determine the Accept header
+            String[] localVarHttpHeaderAccepts = new String[] {
+            };
+            String localVarHttpHeaderAccept = this.Configuration.ApiClient.SelectHeaderAccept(localVarHttpHeaderAccepts);
+            if (localVarHttpHeaderAccept != null)
+                localVarHeaderParams.Add("Accept", localVarHttpHeaderAccept);
+
+            if (requiredStringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_string_group", requiredStringGroup)); // query parameter
+            if (requiredInt64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_int64_group", requiredInt64Group)); // query parameter
+            if (stringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "string_group", stringGroup)); // query parameter
+            if (int64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "int64_group", int64Group)); // query parameter
+            if (requiredBooleanGroup != null) localVarHeaderParams.Add("required_boolean_group", this.Configuration.ApiClient.ParameterToString(requiredBooleanGroup)); // header parameter
+            if (booleanGroup != null) localVarHeaderParams.Add("boolean_group", this.Configuration.ApiClient.ParameterToString(booleanGroup)); // header parameter
+
+
+            // make the HTTP request
+            IRestResponse localVarResponse = (IRestResponse) this.Configuration.ApiClient.CallApi(localVarPath,
+                Method.DELETE, localVarQueryParams, localVarPostBody, localVarHeaderParams, localVarFormParams, localVarFileParams,
+                localVarPathParams, localVarHttpContentType);
+
+            int localVarStatusCode = (int) localVarResponse.StatusCode;
+
+            if (ExceptionFactory != null)
+            {
+                Exception exception = ExceptionFactory("TestGroupParameters", localVarResponse);
+                if (exception != null) throw exception;
+            }
+
+            return new ApiResponse<Object>(localVarStatusCode,
+                localVarResponse.Headers.ToDictionary(x => x.Name, x => x.Value.ToString()),
+                null);
+        }
+
         /// <summary>
         /// test inline additionalProperties 
         /// </summary>

samples/client/petstore/csharp/OpenAPIClientNet35/src/Org.OpenAPITools/Model/FileSchemaTestClass.cs

@@ -35,7 +35,7 @@ namespace Org.OpenAPITools.Model
         /// </summary>
         /// <param name="file">file.</param>
         /// <param name="files">files.</param>
-        public FileSchemaTestClass(System.IO.Stream file = default(System.IO.Stream), List<System.IO.Stream> files = default(List<System.IO.Stream>))
+        public FileSchemaTestClass(File file = default(File), List<File> files = default(List<File>))
         {
             this.File = file;
             this.Files = files;
@@ -45,13 +45,13 @@ namespace Org.OpenAPITools.Model
         /// Gets or Sets File
         /// </summary>
         [DataMember(Name="file", EmitDefaultValue=false)]
-        public System.IO.Stream File { get; set; }
+        public File File { get; set; }
 
         /// <summary>
         /// Gets or Sets Files
         /// </summary>
         [DataMember(Name="files", EmitDefaultValue=false)]
-        public List<System.IO.Stream> Files { get; set; }
+        public List<File> Files { get; set; }
 
         /// <summary>
         /// Returns the string presentation of the object

samples/client/petstore/csharp/OpenAPIClientNet40/.openapi-generator/VERSION

@@ -1 +1 @@
-3.3.2-SNAPSHOT
+3.3.3-SNAPSHOT

samples/client/petstore/csharp/OpenAPIClientNet40/README.md

@@ -106,6 +106,7 @@ Class | Method | HTTP request | Description
 *FakeApi* | [**TestClientModel**](docs/FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 *FakeApi* | [**TestEndpointParameters**](docs/FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 *FakeApi* | [**TestEnumParameters**](docs/FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+*FakeApi* | [**TestGroupParameters**](docs/FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 *FakeApi* | [**TestInlineAdditionalProperties**](docs/FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 *FakeApi* | [**TestJsonFormData**](docs/FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 *FakeClassnameTags123Api* | [**TestClassname**](docs/FakeClassnameTags123Api.md#testclassname) | **PATCH** /fake_classname_test | To test class name in snake case

samples/client/petstore/csharp/OpenAPIClientNet40/docs/FakeApi.md

@@ -13,6 +13,7 @@ Method | HTTP request | Description
 [**TestClientModel**](FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 [**TestEndpointParameters**](FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 [**TestEnumParameters**](FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+[**TestGroupParameters**](FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 [**TestInlineAdditionalProperties**](FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 [**TestJsonFormData**](FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 
@@ -600,6 +601,76 @@ No authorization required
 
 [[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)
 
+<a name="testgroupparameters"></a>
+# **TestGroupParameters**
+> void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+```csharp
+using System;
+using System.Diagnostics;
+using Org.OpenAPITools.Api;
+using Org.OpenAPITools.Client;
+using Org.OpenAPITools.Model;
+
+namespace Example
+{
+    public class TestGroupParametersExample
+    {
+        public void main()
+        {
+            var apiInstance = new FakeApi();
+            var requiredStringGroup = 56;  // int? | Required String in group parameters
+            var requiredBooleanGroup = true;  // bool? | Required Boolean in group parameters
+            var requiredInt64Group = 789;  // long? | Required Integer in group parameters
+            var stringGroup = 56;  // int? | String in group parameters (optional) 
+            var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
+            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+
+            try
+            {
+                // Fake endpoint to test group parameters (optional)
+                apiInstance.TestGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+            }
+            catch (Exception e)
+            {
+                Debug.Print("Exception when calling FakeApi.TestGroupParameters: " + e.Message );
+            }
+        }
+    }
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **requiredStringGroup** | **int?**| Required String in group parameters | 
+ **requiredBooleanGroup** | **bool?**| Required Boolean in group parameters | 
+ **requiredInt64Group** | **long?**| Required Integer in group parameters | 
+ **stringGroup** | **int?**| String in group parameters | [optional] 
+ **booleanGroup** | **bool?**| Boolean in group parameters | [optional] 
+ **int64Group** | **long?**| Integer in group parameters | [optional] 
+
+### Return type
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **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)
+
 <a name="testinlineadditionalproperties"></a>
 # **TestInlineAdditionalProperties**
 > void TestInlineAdditionalProperties (Dictionary<string, string> requestBody)

samples/client/petstore/csharp/OpenAPIClientNet40/docs/FileSchemaTestClass.md

@@ -3,8 +3,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**File** | **System.IO.Stream** |  | [optional] 
+**File** | [**File**](File.md) |  | [optional] 
-**Files** | **List<System.IO.Stream>** |  | [optional] 
+**Files** | [**List<File>**](File.md) |  | [optional] 
 
 [[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/OpenAPIClientNet40/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -256,6 +256,37 @@ namespace Org.OpenAPITools.Api
         /// <returns>ApiResponse of Object(void)</returns>
         ApiResponse<Object> TestEnumParametersWithHttpInfo (List<string> enumHeaderStringArray = null, string enumHeaderString = null, List<string> enumQueryStringArray = null, string enumQueryString = null, int? enumQueryInteger = null, double? enumQueryDouble = null, List<string> enumFormStringArray = null, string enumFormString = null);
         /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+        /// <summary>
         /// test inline additionalProperties
         /// </summary>
         /// <remarks>
@@ -1116,6 +1147,91 @@ namespace Org.OpenAPITools.Api
                 null);
         }
 
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        public void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+             TestGroupParametersWithHttpInfo(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        public ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+            // verify the required parameter 'requiredStringGroup' is set
+            if (requiredStringGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredStringGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredBooleanGroup' is set
+            if (requiredBooleanGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredBooleanGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredInt64Group' is set
+            if (requiredInt64Group == null)
+                throw new ApiException(400, "Missing required parameter 'requiredInt64Group' when calling FakeApi->TestGroupParameters");
+
+            var localVarPath = "/fake";
+            var localVarPathParams = new Dictionary<String, String>();
+            var localVarQueryParams = new List<KeyValuePair<String, String>>();
+            var localVarHeaderParams = new Dictionary<String, String>(this.Configuration.DefaultHeader);
+            var localVarFormParams = new Dictionary<String, String>();
+            var localVarFileParams = new Dictionary<String, FileParameter>();
+            Object localVarPostBody = null;
+
+            // to determine the Content-Type header
+            String[] localVarHttpContentTypes = new String[] {
+            };
+            String localVarHttpContentType = this.Configuration.ApiClient.SelectHeaderContentType(localVarHttpContentTypes);
+
+            // to determine the Accept header
+            String[] localVarHttpHeaderAccepts = new String[] {
+            };
+            String localVarHttpHeaderAccept = this.Configuration.ApiClient.SelectHeaderAccept(localVarHttpHeaderAccepts);
+            if (localVarHttpHeaderAccept != null)
+                localVarHeaderParams.Add("Accept", localVarHttpHeaderAccept);
+
+            if (requiredStringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_string_group", requiredStringGroup)); // query parameter
+            if (requiredInt64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_int64_group", requiredInt64Group)); // query parameter
+            if (stringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "string_group", stringGroup)); // query parameter
+            if (int64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "int64_group", int64Group)); // query parameter
+            if (requiredBooleanGroup != null) localVarHeaderParams.Add("required_boolean_group", this.Configuration.ApiClient.ParameterToString(requiredBooleanGroup)); // header parameter
+            if (booleanGroup != null) localVarHeaderParams.Add("boolean_group", this.Configuration.ApiClient.ParameterToString(booleanGroup)); // header parameter
+
+
+            // make the HTTP request
+            IRestResponse localVarResponse = (IRestResponse) this.Configuration.ApiClient.CallApi(localVarPath,
+                Method.DELETE, localVarQueryParams, localVarPostBody, localVarHeaderParams, localVarFormParams, localVarFileParams,
+                localVarPathParams, localVarHttpContentType);
+
+            int localVarStatusCode = (int) localVarResponse.StatusCode;
+
+            if (ExceptionFactory != null)
+            {
+                Exception exception = ExceptionFactory("TestGroupParameters", localVarResponse);
+                if (exception != null) throw exception;
+            }
+
+            return new ApiResponse<Object>(localVarStatusCode,
+                localVarResponse.Headers.ToDictionary(x => x.Name, x => x.Value.ToString()),
+                null);
+        }
+
         /// <summary>
         /// test inline additionalProperties 
         /// </summary>

samples/client/petstore/csharp/OpenAPIClientNet40/src/Org.OpenAPITools/Model/FileSchemaTestClass.cs

@@ -35,7 +35,7 @@ namespace Org.OpenAPITools.Model
         /// </summary>
         /// <param name="file">file.</param>
         /// <param name="files">files.</param>
-        public FileSchemaTestClass(System.IO.Stream file = default(System.IO.Stream), List<System.IO.Stream> files = default(List<System.IO.Stream>))
+        public FileSchemaTestClass(File file = default(File), List<File> files = default(List<File>))
         {
             this.File = file;
             this.Files = files;
@@ -45,13 +45,13 @@ namespace Org.OpenAPITools.Model
         /// Gets or Sets File
         /// </summary>
         [DataMember(Name="file", EmitDefaultValue=false)]
-        public System.IO.Stream File { get; set; }
+        public File File { get; set; }
 
         /// <summary>
         /// Gets or Sets Files
         /// </summary>
         [DataMember(Name="files", EmitDefaultValue=false)]
-        public List<System.IO.Stream> Files { get; set; }
+        public List<File> Files { get; set; }
 
         /// <summary>
         /// Returns the string presentation of the object

samples/client/petstore/csharp/OpenAPIClientNetStandard/.openapi-generator/VERSION

@@ -1 +1 @@
-3.3.2-SNAPSHOT
+3.3.3-SNAPSHOT

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

@@ -84,6 +84,7 @@ Class | Method | HTTP request | Description
 *FakeApi* | [**TestClientModel**](docs/FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 *FakeApi* | [**TestEndpointParameters**](docs/FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 *FakeApi* | [**TestEnumParameters**](docs/FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+*FakeApi* | [**TestGroupParameters**](docs/FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 *FakeApi* | [**TestInlineAdditionalProperties**](docs/FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 *FakeApi* | [**TestJsonFormData**](docs/FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 *FakeClassnameTags123Api* | [**TestClassname**](docs/FakeClassnameTags123Api.md#testclassname) | **PATCH** /fake_classname_test | To test class name in snake case

samples/client/petstore/csharp/OpenAPIClientNetStandard/docs/FakeApi.md

@@ -13,6 +13,7 @@ Method | HTTP request | Description
 [**TestClientModel**](FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 [**TestEndpointParameters**](FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 [**TestEnumParameters**](FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+[**TestGroupParameters**](FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 [**TestInlineAdditionalProperties**](FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 [**TestJsonFormData**](FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 
@@ -600,6 +601,76 @@ No authorization required
 
 [[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)
 
+<a name="testgroupparameters"></a>
+# **TestGroupParameters**
+> void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+```csharp
+using System;
+using System.Diagnostics;
+using Org.OpenAPITools.Api;
+using Org.OpenAPITools.Client;
+using Org.OpenAPITools.Model;
+
+namespace Example
+{
+    public class TestGroupParametersExample
+    {
+        public void main()
+        {
+            var apiInstance = new FakeApi();
+            var requiredStringGroup = 56;  // int? | Required String in group parameters
+            var requiredBooleanGroup = true;  // bool? | Required Boolean in group parameters
+            var requiredInt64Group = 789;  // long? | Required Integer in group parameters
+            var stringGroup = 56;  // int? | String in group parameters (optional) 
+            var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
+            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+
+            try
+            {
+                // Fake endpoint to test group parameters (optional)
+                apiInstance.TestGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+            }
+            catch (Exception e)
+            {
+                Debug.Print("Exception when calling FakeApi.TestGroupParameters: " + e.Message );
+            }
+        }
+    }
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **requiredStringGroup** | **int?**| Required String in group parameters | 
+ **requiredBooleanGroup** | **bool?**| Required Boolean in group parameters | 
+ **requiredInt64Group** | **long?**| Required Integer in group parameters | 
+ **stringGroup** | **int?**| String in group parameters | [optional] 
+ **booleanGroup** | **bool?**| Boolean in group parameters | [optional] 
+ **int64Group** | **long?**| Integer in group parameters | [optional] 
+
+### Return type
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **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)
+
 <a name="testinlineadditionalproperties"></a>
 # **TestInlineAdditionalProperties**
 > void TestInlineAdditionalProperties (Dictionary<string, string> requestBody)

samples/client/petstore/csharp/OpenAPIClientNetStandard/docs/FileSchemaTestClass.md

@@ -3,8 +3,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**File** | **System.IO.Stream** |  | [optional] 
+**File** | [**File**](File.md) |  | [optional] 
-**Files** | **List<System.IO.Stream>** |  | [optional] 
+**Files** | [**List<File>**](File.md) |  | [optional] 
 
 [[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/OpenAPIClientNetStandard/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -256,6 +256,37 @@ namespace Org.OpenAPITools.Api
         /// <returns>ApiResponse of Object(void)</returns>
         ApiResponse<Object> TestEnumParametersWithHttpInfo (List<string> enumHeaderStringArray = null, string enumHeaderString = null, List<string> enumQueryStringArray = null, string enumQueryString = null, int? enumQueryInteger = null, double? enumQueryDouble = null, List<string> enumFormStringArray = null, string enumFormString = null);
         /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+        /// <summary>
         /// test inline additionalProperties
         /// </summary>
         /// <remarks>
@@ -533,6 +564,37 @@ namespace Org.OpenAPITools.Api
         /// <returns>Task of ApiResponse</returns>
         System.Threading.Tasks.Task<ApiResponse<Object>> TestEnumParametersAsyncWithHttpInfo (List<string> enumHeaderStringArray = null, string enumHeaderString = null, List<string> enumQueryStringArray = null, string enumQueryString = null, int? enumQueryInteger = null, double? enumQueryDouble = null, List<string> enumFormStringArray = null, string enumFormString = null);
         /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of void</returns>
+        System.Threading.Tasks.Task TestGroupParametersAsync (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of ApiResponse</returns>
+        System.Threading.Tasks.Task<ApiResponse<Object>> TestGroupParametersAsyncWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+        /// <summary>
         /// test inline additionalProperties
         /// </summary>
         /// <remarks>
@@ -2108,6 +2170,177 @@ namespace Org.OpenAPITools.Api
                 null);
         }
 
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        public void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+             TestGroupParametersWithHttpInfo(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        public ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+            // verify the required parameter 'requiredStringGroup' is set
+            if (requiredStringGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredStringGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredBooleanGroup' is set
+            if (requiredBooleanGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredBooleanGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredInt64Group' is set
+            if (requiredInt64Group == null)
+                throw new ApiException(400, "Missing required parameter 'requiredInt64Group' when calling FakeApi->TestGroupParameters");
+
+            var localVarPath = "./fake";
+            var localVarPathParams = new Dictionary<String, String>();
+            var localVarQueryParams = new List<KeyValuePair<String, String>>();
+            var localVarHeaderParams = new Dictionary<String, String>(this.Configuration.DefaultHeader);
+            var localVarFormParams = new Dictionary<String, String>();
+            var localVarFileParams = new Dictionary<String, FileParameter>();
+            Object localVarPostBody = null;
+
+            // to determine the Content-Type header
+            String[] localVarHttpContentTypes = new String[] {
+            };
+            String localVarHttpContentType = this.Configuration.ApiClient.SelectHeaderContentType(localVarHttpContentTypes);
+
+            // to determine the Accept header
+            String[] localVarHttpHeaderAccepts = new String[] {
+            };
+            String localVarHttpHeaderAccept = this.Configuration.ApiClient.SelectHeaderAccept(localVarHttpHeaderAccepts);
+            if (localVarHttpHeaderAccept != null)
+                localVarHeaderParams.Add("Accept", localVarHttpHeaderAccept);
+
+            if (requiredStringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_string_group", requiredStringGroup)); // query parameter
+            if (requiredInt64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_int64_group", requiredInt64Group)); // query parameter
+            if (stringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "string_group", stringGroup)); // query parameter
+            if (int64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "int64_group", int64Group)); // query parameter
+            if (requiredBooleanGroup != null) localVarHeaderParams.Add("required_boolean_group", this.Configuration.ApiClient.ParameterToString(requiredBooleanGroup)); // header parameter
+            if (booleanGroup != null) localVarHeaderParams.Add("boolean_group", this.Configuration.ApiClient.ParameterToString(booleanGroup)); // header parameter
+
+
+            // make the HTTP request
+            IRestResponse localVarResponse = (IRestResponse) this.Configuration.ApiClient.CallApi(localVarPath,
+                Method.DELETE, localVarQueryParams, localVarPostBody, localVarHeaderParams, localVarFormParams, localVarFileParams,
+                localVarPathParams, localVarHttpContentType);
+
+            int localVarStatusCode = (int) localVarResponse.StatusCode;
+
+            if (ExceptionFactory != null)
+            {
+                Exception exception = ExceptionFactory("TestGroupParameters", localVarResponse);
+                if (exception != null) throw exception;
+            }
+
+            return new ApiResponse<Object>(localVarStatusCode,
+                localVarResponse.Headers.ToDictionary(x => x.Key, x => x.Value.ToString()),
+                null);
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of void</returns>
+        public async System.Threading.Tasks.Task TestGroupParametersAsync (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+             await TestGroupParametersAsyncWithHttpInfo(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of ApiResponse</returns>
+        public async System.Threading.Tasks.Task<ApiResponse<Object>> TestGroupParametersAsyncWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+            // verify the required parameter 'requiredStringGroup' is set
+            if (requiredStringGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredStringGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredBooleanGroup' is set
+            if (requiredBooleanGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredBooleanGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredInt64Group' is set
+            if (requiredInt64Group == null)
+                throw new ApiException(400, "Missing required parameter 'requiredInt64Group' when calling FakeApi->TestGroupParameters");
+
+            var localVarPath = "./fake";
+            var localVarPathParams = new Dictionary<String, String>();
+            var localVarQueryParams = new List<KeyValuePair<String, String>>();
+            var localVarHeaderParams = new Dictionary<String, String>(this.Configuration.DefaultHeader);
+            var localVarFormParams = new Dictionary<String, String>();
+            var localVarFileParams = new Dictionary<String, FileParameter>();
+            Object localVarPostBody = null;
+
+            // to determine the Content-Type header
+            String[] localVarHttpContentTypes = new String[] {
+            };
+            String localVarHttpContentType = this.Configuration.ApiClient.SelectHeaderContentType(localVarHttpContentTypes);
+
+            // to determine the Accept header
+            String[] localVarHttpHeaderAccepts = new String[] {
+            };
+            String localVarHttpHeaderAccept = this.Configuration.ApiClient.SelectHeaderAccept(localVarHttpHeaderAccepts);
+            if (localVarHttpHeaderAccept != null)
+                localVarHeaderParams.Add("Accept", localVarHttpHeaderAccept);
+
+            if (requiredStringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_string_group", requiredStringGroup)); // query parameter
+            if (requiredInt64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_int64_group", requiredInt64Group)); // query parameter
+            if (stringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "string_group", stringGroup)); // query parameter
+            if (int64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "int64_group", int64Group)); // query parameter
+            if (requiredBooleanGroup != null) localVarHeaderParams.Add("required_boolean_group", this.Configuration.ApiClient.ParameterToString(requiredBooleanGroup)); // header parameter
+            if (booleanGroup != null) localVarHeaderParams.Add("boolean_group", this.Configuration.ApiClient.ParameterToString(booleanGroup)); // header parameter
+
+
+            // make the HTTP request
+            IRestResponse localVarResponse = (IRestResponse) await this.Configuration.ApiClient.CallApiAsync(localVarPath,
+                Method.DELETE, localVarQueryParams, localVarPostBody, localVarHeaderParams, localVarFormParams, localVarFileParams,
+                localVarPathParams, localVarHttpContentType);
+
+            int localVarStatusCode = (int) localVarResponse.StatusCode;
+
+            if (ExceptionFactory != null)
+            {
+                Exception exception = ExceptionFactory("TestGroupParameters", localVarResponse);
+                if (exception != null) throw exception;
+            }
+
+            return new ApiResponse<Object>(localVarStatusCode,
+                localVarResponse.Headers.ToDictionary(x => x.Key, x => x.Value.ToString()),
+                null);
+        }
+
         /// <summary>
         /// test inline additionalProperties 
         /// </summary>

samples/client/petstore/csharp/OpenAPIClientNetStandard/src/Org.OpenAPITools/Model/FileSchemaTestClass.cs

@@ -33,7 +33,7 @@ namespace Org.OpenAPITools.Model
         /// </summary>
         /// <param name="file">file.</param>
         /// <param name="files">files.</param>
-        public FileSchemaTestClass(System.IO.Stream file = default(System.IO.Stream), List<System.IO.Stream> files = default(List<System.IO.Stream>))
+        public FileSchemaTestClass(File file = default(File), List<File> files = default(List<File>))
         {
             this.File = file;
             this.Files = files;
@@ -43,13 +43,13 @@ namespace Org.OpenAPITools.Model
         /// Gets or Sets File
         /// </summary>
         [DataMember(Name="file", EmitDefaultValue=false)]
-        public System.IO.Stream File { get; set; }
+        public File File { get; set; }
 
         /// <summary>
         /// Gets or Sets Files
         /// </summary>
         [DataMember(Name="files", EmitDefaultValue=false)]
-        public List<System.IO.Stream> Files { get; set; }
+        public List<File> Files { get; set; }
 
         /// <summary>
         /// Returns the string presentation of the object

samples/client/petstore/csharp/OpenAPIClientWithPropertyChanged/.openapi-generator/VERSION

@@ -1 +1 @@
-3.3.2-SNAPSHOT
+3.3.3-SNAPSHOT

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

@@ -106,6 +106,7 @@ Class | Method | HTTP request | Description
 *FakeApi* | [**TestClientModel**](docs/FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 *FakeApi* | [**TestEndpointParameters**](docs/FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 *FakeApi* | [**TestEnumParameters**](docs/FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+*FakeApi* | [**TestGroupParameters**](docs/FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 *FakeApi* | [**TestInlineAdditionalProperties**](docs/FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 *FakeApi* | [**TestJsonFormData**](docs/FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 *FakeClassnameTags123Api* | [**TestClassname**](docs/FakeClassnameTags123Api.md#testclassname) | **PATCH** /fake_classname_test | To test class name in snake case

samples/client/petstore/csharp/OpenAPIClientWithPropertyChanged/docs/FakeApi.md

@@ -13,6 +13,7 @@ Method | HTTP request | Description
 [**TestClientModel**](FakeApi.md#testclientmodel) | **PATCH** /fake | To test \"client\" model
 [**TestEndpointParameters**](FakeApi.md#testendpointparameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 [**TestEnumParameters**](FakeApi.md#testenumparameters) | **GET** /fake | To test enum parameters
+[**TestGroupParameters**](FakeApi.md#testgroupparameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
 [**TestInlineAdditionalProperties**](FakeApi.md#testinlineadditionalproperties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 [**TestJsonFormData**](FakeApi.md#testjsonformdata) | **GET** /fake/jsonFormData | test json serialization of form data
 
@@ -600,6 +601,76 @@ No authorization required
 
 [[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)
 
+<a name="testgroupparameters"></a>
+# **TestGroupParameters**
+> void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+```csharp
+using System;
+using System.Diagnostics;
+using Org.OpenAPITools.Api;
+using Org.OpenAPITools.Client;
+using Org.OpenAPITools.Model;
+
+namespace Example
+{
+    public class TestGroupParametersExample
+    {
+        public void main()
+        {
+            var apiInstance = new FakeApi();
+            var requiredStringGroup = 56;  // int? | Required String in group parameters
+            var requiredBooleanGroup = true;  // bool? | Required Boolean in group parameters
+            var requiredInt64Group = 789;  // long? | Required Integer in group parameters
+            var stringGroup = 56;  // int? | String in group parameters (optional) 
+            var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
+            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+
+            try
+            {
+                // Fake endpoint to test group parameters (optional)
+                apiInstance.TestGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+            }
+            catch (Exception e)
+            {
+                Debug.Print("Exception when calling FakeApi.TestGroupParameters: " + e.Message );
+            }
+        }
+    }
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **requiredStringGroup** | **int?**| Required String in group parameters | 
+ **requiredBooleanGroup** | **bool?**| Required Boolean in group parameters | 
+ **requiredInt64Group** | **long?**| Required Integer in group parameters | 
+ **stringGroup** | **int?**| String in group parameters | [optional] 
+ **booleanGroup** | **bool?**| Boolean in group parameters | [optional] 
+ **int64Group** | **long?**| Integer in group parameters | [optional] 
+
+### Return type
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **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)
+
 <a name="testinlineadditionalproperties"></a>
 # **TestInlineAdditionalProperties**
 > void TestInlineAdditionalProperties (Dictionary<string, string> requestBody)

samples/client/petstore/csharp/OpenAPIClientWithPropertyChanged/docs/FileSchemaTestClass.md

@@ -3,8 +3,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**File** | **System.IO.Stream** |  | [optional] 
+**File** | [**File**](File.md) |  | [optional] 
-**Files** | **List<System.IO.Stream>** |  | [optional] 
+**Files** | [**List<File>**](File.md) |  | [optional] 
 
 [[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/OpenAPIClientWithPropertyChanged/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -256,6 +256,37 @@ namespace Org.OpenAPITools.Api
         /// <returns>ApiResponse of Object(void)</returns>
         ApiResponse<Object> TestEnumParametersWithHttpInfo (List<string> enumHeaderStringArray = null, string enumHeaderString = null, List<string> enumQueryStringArray = null, string enumQueryString = null, int? enumQueryInteger = null, double? enumQueryDouble = null, List<string> enumFormStringArray = null, string enumFormString = null);
         /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+        /// <summary>
         /// test inline additionalProperties
         /// </summary>
         /// <remarks>
@@ -533,6 +564,37 @@ namespace Org.OpenAPITools.Api
         /// <returns>Task of ApiResponse</returns>
         System.Threading.Tasks.Task<ApiResponse<Object>> TestEnumParametersAsyncWithHttpInfo (List<string> enumHeaderStringArray = null, string enumHeaderString = null, List<string> enumQueryStringArray = null, string enumQueryString = null, int? enumQueryInteger = null, double? enumQueryDouble = null, List<string> enumFormStringArray = null, string enumFormString = null);
         /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of void</returns>
+        System.Threading.Tasks.Task TestGroupParametersAsync (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <remarks>
+        /// Fake endpoint to test group parameters (optional)
+        /// </remarks>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of ApiResponse</returns>
+        System.Threading.Tasks.Task<ApiResponse<Object>> TestGroupParametersAsyncWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null);
+        /// <summary>
         /// test inline additionalProperties
         /// </summary>
         /// <remarks>
@@ -2108,6 +2170,177 @@ namespace Org.OpenAPITools.Api
                 null);
         }
 
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns></returns>
+        public void TestGroupParameters (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+             TestGroupParametersWithHttpInfo(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>ApiResponse of Object(void)</returns>
+        public ApiResponse<Object> TestGroupParametersWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+            // verify the required parameter 'requiredStringGroup' is set
+            if (requiredStringGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredStringGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredBooleanGroup' is set
+            if (requiredBooleanGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredBooleanGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredInt64Group' is set
+            if (requiredInt64Group == null)
+                throw new ApiException(400, "Missing required parameter 'requiredInt64Group' when calling FakeApi->TestGroupParameters");
+
+            var localVarPath = "/fake";
+            var localVarPathParams = new Dictionary<String, String>();
+            var localVarQueryParams = new List<KeyValuePair<String, String>>();
+            var localVarHeaderParams = new Dictionary<String, String>(this.Configuration.DefaultHeader);
+            var localVarFormParams = new Dictionary<String, String>();
+            var localVarFileParams = new Dictionary<String, FileParameter>();
+            Object localVarPostBody = null;
+
+            // to determine the Content-Type header
+            String[] localVarHttpContentTypes = new String[] {
+            };
+            String localVarHttpContentType = this.Configuration.ApiClient.SelectHeaderContentType(localVarHttpContentTypes);
+
+            // to determine the Accept header
+            String[] localVarHttpHeaderAccepts = new String[] {
+            };
+            String localVarHttpHeaderAccept = this.Configuration.ApiClient.SelectHeaderAccept(localVarHttpHeaderAccepts);
+            if (localVarHttpHeaderAccept != null)
+                localVarHeaderParams.Add("Accept", localVarHttpHeaderAccept);
+
+            if (requiredStringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_string_group", requiredStringGroup)); // query parameter
+            if (requiredInt64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_int64_group", requiredInt64Group)); // query parameter
+            if (stringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "string_group", stringGroup)); // query parameter
+            if (int64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "int64_group", int64Group)); // query parameter
+            if (requiredBooleanGroup != null) localVarHeaderParams.Add("required_boolean_group", this.Configuration.ApiClient.ParameterToString(requiredBooleanGroup)); // header parameter
+            if (booleanGroup != null) localVarHeaderParams.Add("boolean_group", this.Configuration.ApiClient.ParameterToString(booleanGroup)); // header parameter
+
+
+            // make the HTTP request
+            IRestResponse localVarResponse = (IRestResponse) this.Configuration.ApiClient.CallApi(localVarPath,
+                Method.DELETE, localVarQueryParams, localVarPostBody, localVarHeaderParams, localVarFormParams, localVarFileParams,
+                localVarPathParams, localVarHttpContentType);
+
+            int localVarStatusCode = (int) localVarResponse.StatusCode;
+
+            if (ExceptionFactory != null)
+            {
+                Exception exception = ExceptionFactory("TestGroupParameters", localVarResponse);
+                if (exception != null) throw exception;
+            }
+
+            return new ApiResponse<Object>(localVarStatusCode,
+                localVarResponse.Headers.ToDictionary(x => x.Name, x => x.Value.ToString()),
+                null);
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of void</returns>
+        public async System.Threading.Tasks.Task TestGroupParametersAsync (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+             await TestGroupParametersAsyncWithHttpInfo(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group);
+
+        }
+
+        /// <summary>
+        /// Fake endpoint to test group parameters (optional) Fake endpoint to test group parameters (optional)
+        /// </summary>
+        /// <exception cref="Org.OpenAPITools.Client.ApiException">Thrown when fails to make API call</exception>
+        /// <param name="requiredStringGroup">Required String in group parameters</param>
+        /// <param name="requiredBooleanGroup">Required Boolean in group parameters</param>
+        /// <param name="requiredInt64Group">Required Integer in group parameters</param>
+        /// <param name="stringGroup">String in group parameters (optional)</param>
+        /// <param name="booleanGroup">Boolean in group parameters (optional)</param>
+        /// <param name="int64Group">Integer in group parameters (optional)</param>
+        /// <returns>Task of ApiResponse</returns>
+        public async System.Threading.Tasks.Task<ApiResponse<Object>> TestGroupParametersAsyncWithHttpInfo (int? requiredStringGroup, bool? requiredBooleanGroup, long? requiredInt64Group, int? stringGroup = null, bool? booleanGroup = null, long? int64Group = null)
+        {
+            // verify the required parameter 'requiredStringGroup' is set
+            if (requiredStringGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredStringGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredBooleanGroup' is set
+            if (requiredBooleanGroup == null)
+                throw new ApiException(400, "Missing required parameter 'requiredBooleanGroup' when calling FakeApi->TestGroupParameters");
+            // verify the required parameter 'requiredInt64Group' is set
+            if (requiredInt64Group == null)
+                throw new ApiException(400, "Missing required parameter 'requiredInt64Group' when calling FakeApi->TestGroupParameters");
+
+            var localVarPath = "/fake";
+            var localVarPathParams = new Dictionary<String, String>();
+            var localVarQueryParams = new List<KeyValuePair<String, String>>();
+            var localVarHeaderParams = new Dictionary<String, String>(this.Configuration.DefaultHeader);
+            var localVarFormParams = new Dictionary<String, String>();
+            var localVarFileParams = new Dictionary<String, FileParameter>();
+            Object localVarPostBody = null;
+
+            // to determine the Content-Type header
+            String[] localVarHttpContentTypes = new String[] {
+            };
+            String localVarHttpContentType = this.Configuration.ApiClient.SelectHeaderContentType(localVarHttpContentTypes);
+
+            // to determine the Accept header
+            String[] localVarHttpHeaderAccepts = new String[] {
+            };
+            String localVarHttpHeaderAccept = this.Configuration.ApiClient.SelectHeaderAccept(localVarHttpHeaderAccepts);
+            if (localVarHttpHeaderAccept != null)
+                localVarHeaderParams.Add("Accept", localVarHttpHeaderAccept);
+
+            if (requiredStringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_string_group", requiredStringGroup)); // query parameter
+            if (requiredInt64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "required_int64_group", requiredInt64Group)); // query parameter
+            if (stringGroup != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "string_group", stringGroup)); // query parameter
+            if (int64Group != null) localVarQueryParams.AddRange(this.Configuration.ApiClient.ParameterToKeyValuePairs("", "int64_group", int64Group)); // query parameter
+            if (requiredBooleanGroup != null) localVarHeaderParams.Add("required_boolean_group", this.Configuration.ApiClient.ParameterToString(requiredBooleanGroup)); // header parameter
+            if (booleanGroup != null) localVarHeaderParams.Add("boolean_group", this.Configuration.ApiClient.ParameterToString(booleanGroup)); // header parameter
+
+
+            // make the HTTP request
+            IRestResponse localVarResponse = (IRestResponse) await this.Configuration.ApiClient.CallApiAsync(localVarPath,
+                Method.DELETE, localVarQueryParams, localVarPostBody, localVarHeaderParams, localVarFormParams, localVarFileParams,
+                localVarPathParams, localVarHttpContentType);
+
+            int localVarStatusCode = (int) localVarResponse.StatusCode;
+
+            if (ExceptionFactory != null)
+            {
+                Exception exception = ExceptionFactory("TestGroupParameters", localVarResponse);
+                if (exception != null) throw exception;
+            }
+
+            return new ApiResponse<Object>(localVarStatusCode,
+                localVarResponse.Headers.ToDictionary(x => x.Name, x => x.Value.ToString()),
+                null);
+        }
+
         /// <summary>
         /// test inline additionalProperties 
         /// </summary>

samples/client/petstore/csharp/OpenAPIClientWithPropertyChanged/src/Org.OpenAPITools/Model/FileSchemaTestClass.cs

@@ -38,7 +38,7 @@ namespace Org.OpenAPITools.Model
         /// </summary>
         /// <param name="file">file.</param>
         /// <param name="files">files.</param>
-        public FileSchemaTestClass(System.IO.Stream file = default(System.IO.Stream), List<System.IO.Stream> files = default(List<System.IO.Stream>))
+        public FileSchemaTestClass(File file = default(File), List<File> files = default(List<File>))
         {
             this.File = file;
             this.Files = files;
@@ -48,13 +48,13 @@ namespace Org.OpenAPITools.Model
         /// Gets or Sets File
         /// </summary>
         [DataMember(Name="file", EmitDefaultValue=false)]
-        public System.IO.Stream File { get; set; }
+        public File File { get; set; }
 
         /// <summary>
         /// Gets or Sets Files
         /// </summary>
         [DataMember(Name="files", EmitDefaultValue=false)]
-        public List<System.IO.Stream> Files { get; set; }
+        public List<File> Files { get; set; }
 
         /// <summary>
         /// Returns the string presentation of the object