[Python] Add test object serialization for multipart requests (#18156)

* [Python] add test object serialization for multipart requests #18140

* [python] update samples

* [python] update samples

samples/openapi3/client/petstore/python/docs/FakeApi.md

@@ -37,6 +37,7 @@ Method | HTTP request | Description
 [**test_inline_additional_properties**](FakeApi.md#test_inline_additional_properties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
 [**test_inline_freeform_additional_properties**](FakeApi.md#test_inline_freeform_additional_properties) | **POST** /fake/inline-freeform-additionalProperties | test inline free-form additionalProperties
 [**test_json_form_data**](FakeApi.md#test_json_form_data) | **GET** /fake/jsonFormData | test json serialization of form data
+[**test_object_for_multipart_requests**](FakeApi.md#test_object_for_multipart_requests) | **POST** /fake/object_for_multipart_requests | 
 [**test_query_parameter_collection_format**](FakeApi.md#test_query_parameter_collection_format) | **PUT** /fake/test-query-parameters | 
 [**test_string_map_reference**](FakeApi.md#test_string_map_reference) | **POST** /fake/stringMap-reference | test referenced string map
 
@@ -2274,6 +2275,69 @@ 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)
 
+# **test_object_for_multipart_requests**
+> test_object_for_multipart_requests(marker)
+
+
+
+### Example
+
+
+```python
+import petstore_api
+from petstore_api.models.test_object_for_multipart_requests_request_marker import TestObjectForMultipartRequestsRequestMarker
+from petstore_api.rest import ApiException
+from pprint import pprint
+
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = petstore_api.FakeApi(api_client)
+    marker = petstore_api.TestObjectForMultipartRequestsRequestMarker() # TestObjectForMultipartRequestsRequestMarker | 
+
+    try:
+        api_instance.test_object_for_multipart_requests(marker)
+    except Exception as e:
+        print("Exception when calling FakeApi->test_object_for_multipart_requests: %s\n" % e)
+```
+
+
+
+### Parameters
+
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **marker** | [**TestObjectForMultipartRequestsRequestMarker**](TestObjectForMultipartRequestsRequestMarker.md)|  | 
+
+### Return type
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: multipart/form-data
+ - **Accept**: Not defined
+
+### HTTP response details
+
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+**200** | Success |  -  |
+
+[[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)
+
 # **test_query_parameter_collection_format**
 > test_query_parameter_collection_format(pipe, ioutil, http, url, context, allow_empty, language=language)
 

samples/openapi3/client/petstore/python/docs/TestObjectForMultipartRequestsRequestMarker.md

@@ -0,0 +1,29 @@
+# TestObjectForMultipartRequestsRequestMarker
+
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **str** |  | [optional] 
+
+## Example
+
+```python
+from petstore_api.models.test_object_for_multipart_requests_request_marker import TestObjectForMultipartRequestsRequestMarker
+
+# TODO update the JSON string below
+json = "{}"
+# create an instance of TestObjectForMultipartRequestsRequestMarker from a JSON string
+test_object_for_multipart_requests_request_marker_instance = TestObjectForMultipartRequestsRequestMarker.from_json(json)
+# print the JSON string representation of the object
+print(TestObjectForMultipartRequestsRequestMarker.to_json())
+
+# convert the object into a dict
+test_object_for_multipart_requests_request_marker_dict = test_object_for_multipart_requests_request_marker_instance.to_dict()
+# create an instance of TestObjectForMultipartRequestsRequestMarker from a dict
+test_object_for_multipart_requests_request_marker_form_dict = test_object_for_multipart_requests_request_marker.from_dict(test_object_for_multipart_requests_request_marker_dict)
+```
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+