[Golang][client] fix for schema definition name file (#433)

* fix schema/definition name as 'file'

* update samples

* Trigger CI due to previous Shippable race condition

* add fix with toModelName(openAPIType)

* update tests for file schema/definition name

* Update 3.0 test spec

* update samples

* update samples for jaxrs-cxf

* Trigger CI due to previous Shippable race condition

* add back explode

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

@@ -8,6 +8,7 @@ Method | HTTP request | Description
 [**fakeOuterCompositeSerialize**](FakeApi.md#fakeOuterCompositeSerialize) | **POST** /fake/outer/composite | 
 [**fakeOuterNumberSerialize**](FakeApi.md#fakeOuterNumberSerialize) | **POST** /fake/outer/number | 
 [**fakeOuterStringSerialize**](FakeApi.md#fakeOuterStringSerialize) | **POST** /fake/outer/string | 
+[**testBodyWithFileSchema**](FakeApi.md#testBodyWithFileSchema) | **PUT** /fake/body-with-file-schema | 
 [**testBodyWithQueryParams**](FakeApi.md#testBodyWithQueryParams) | **PUT** /fake/body-with-query-params | 
 [**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 
@@ -196,6 +197,50 @@ No authorization required
  - **Content-Type**: Not defined
  - **Accept**: */*
 
+<a name="testBodyWithFileSchema"></a>
+# **testBodyWithFileSchema**
+> testBodyWithFileSchema(fileSchemaTestClass)
+
+
+
+For this test, the body for this request much reference a schema named &#x60;File&#x60;.
+
+### Example
+```java
+// Import classes:
+//import org.openapitools.client.ApiException;
+//import org.openapitools.client.api.FakeApi;
+
+
+FakeApi apiInstance = new FakeApi();
+FileSchemaTestClass fileSchemaTestClass = new FileSchemaTestClass(); // FileSchemaTestClass | 
+try {
+    apiInstance.testBodyWithFileSchema(fileSchemaTestClass);
+} catch (ApiException e) {
+    System.err.println("Exception when calling FakeApi#testBodyWithFileSchema");
+    e.printStackTrace();
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **fileSchemaTestClass** | [**FileSchemaTestClass**](FileSchemaTestClass.md)|  |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: Not defined
+
 <a name="testBodyWithQueryParams"></a>
 # **testBodyWithQueryParams**
 > testBodyWithQueryParams(query, user)

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

@@ -0,0 +1,11 @@
+
+# FileSchemaTestClass
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
+**files** | [**List<java.io.File>**](java.io.File.md) |  |  [optional]
+
+
+