update JS petstore samples

samples/client/petstore/javascript-es6/src/api/FakeApi.js

@@ -391,6 +391,50 @@ export default class FakeApi {
       );
     }
 
+    /**
+     * Callback function to receive the result of the testInlineAdditionalProperties operation.
+     * @callback module:api/FakeApi~testInlineAdditionalPropertiesCallback
+     * @param {String} error Error message, if any.
+     * @param data This operation does not return a value.
+     * @param {String} response The complete HTTP response.
+     */
+
+    /**
+     * test inline additionalProperties
+     * 
+     * @param {Object} param request body
+     * @param {module:api/FakeApi~testInlineAdditionalPropertiesCallback} callback The callback function, accepting three arguments: error, data, response
+     */
+    testInlineAdditionalProperties(param, callback) {
+      let postBody = param;
+
+      // verify the required parameter 'param' is set
+      if (param === undefined || param === null) {
+        throw new Error("Missing the required parameter 'param' when calling testInlineAdditionalProperties");
+      }
+
+
+      let pathParams = {
+      };
+      let queryParams = {
+      };
+      let headerParams = {
+      };
+      let formParams = {
+      };
+
+      let authNames = [];
+      let contentTypes = ['application/json'];
+      let accepts = [];
+      let returnType = null;
+
+      return this.apiClient.callApi(
+        '/fake/inline-additionalProperties', 'POST',
+        pathParams, queryParams, headerParams, formParams, postBody,
+        authNames, contentTypes, accepts, returnType, callback
+      );
+    }
+
     /**
      * Callback function to receive the result of the testJsonFormData operation.
      * @callback module:api/FakeApi~testJsonFormDataCallback