[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/feign/src/main/java/org/openapitools/client/api/FakeApi.java

@@ -6,6 +6,7 @@ import org.openapitools.client.EncodingUtils;
 import java.math.BigDecimal;
 import org.openapitools.client.model.Client;
 import java.io.File;
+import org.openapitools.client.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.client.model.OuterComposite;
@@ -73,6 +74,18 @@ public interface FakeApi extends ApiClient.Api {
   })
   String fakeOuterStringSerialize(String body);
 
+  /**
+   * 
+   * For this test, the body for this request much reference a schema named `File`.
+    * @param fileSchemaTestClass  (required)
+   */
+  @RequestLine("PUT /fake/body-with-file-schema")
+  @Headers({
+    "Content-Type: application/json",
+    "Accept: application/json",
+  })
+  void testBodyWithFileSchema(FileSchemaTestClass fileSchemaTestClass);
+
   /**
    * 
    * 

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

@@ -0,0 +1,124 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * FileSchemaTestClass
+ */
+
+public class FileSchemaTestClass {
+  @JsonProperty("file")
+  private java.io.File file = null;
+
+  @JsonProperty("files")
+  private List<java.io.File> files = null;
+
+  public FileSchemaTestClass file(java.io.File file) {
+    this.file = file;
+    return this;
+  }
+
+   /**
+   * Get file
+   * @return file
+  **/
+  @ApiModelProperty(value = "")
+  public java.io.File getFile() {
+    return file;
+  }
+
+  public void setFile(java.io.File file) {
+    this.file = file;
+  }
+
+  public FileSchemaTestClass files(List<java.io.File> files) {
+    this.files = files;
+    return this;
+  }
+
+  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+    if (this.files == null) {
+      this.files = new ArrayList<java.io.File>();
+    }
+    this.files.add(filesItem);
+    return this;
+  }
+
+   /**
+   * Get files
+   * @return files
+  **/
+  @ApiModelProperty(value = "")
+  public List<java.io.File> getFiles() {
+    return files;
+  }
+
+  public void setFiles(List<java.io.File> files) {
+    this.files = files;
+  }
+
+
+  @Override
+  public boolean equals(java.lang.Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
+    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+        Objects.equals(this.files, fileSchemaTestClass.files);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(file, files);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class FileSchemaTestClass {\n");
+    
+    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    files: ").append(toIndentedString(files)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(java.lang.Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+