use model class for request body with additionalProperties (#16613)

* try out simple fix

* add test case

* generate samples

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

@@ -20,6 +20,7 @@ import HealthCheckStatus from '../model/HealthCheckStatus';
 import OuterComposite from '../model/OuterComposite';
 import OuterObjectWithEnumProperty from '../model/OuterObjectWithEnumProperty';
 import Pet from '../model/Pet';
+import TestInlineFreeformAdditionalPropertiesRequest from '../model/TestInlineFreeformAdditionalPropertiesRequest';
 import User from '../model/User';
 
 /**
@@ -728,6 +729,47 @@ export default class FakeApi {
       );
     }
 
+    /**
+     * Callback function to receive the result of the testInlineFreeformAdditionalProperties operation.
+     * @callback module:api/FakeApi~testInlineFreeformAdditionalPropertiesCallback
+     * @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 free-form additionalProperties
+     * 
+     * @param {module:model/TestInlineFreeformAdditionalPropertiesRequest} testInlineFreeformAdditionalPropertiesRequest request body
+     * @param {module:api/FakeApi~testInlineFreeformAdditionalPropertiesCallback} callback The callback function, accepting three arguments: error, data, response
+     */
+    testInlineFreeformAdditionalProperties(testInlineFreeformAdditionalPropertiesRequest, callback) {
+      let postBody = testInlineFreeformAdditionalPropertiesRequest;
+      // verify the required parameter 'testInlineFreeformAdditionalPropertiesRequest' is set
+      if (testInlineFreeformAdditionalPropertiesRequest === undefined || testInlineFreeformAdditionalPropertiesRequest === null) {
+        throw new Error("Missing the required parameter 'testInlineFreeformAdditionalPropertiesRequest' when calling testInlineFreeformAdditionalProperties");
+      }
+
+      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-freeform-additionalProperties', 'POST',
+        pathParams, queryParams, headerParams, formParams, postBody,
+        authNames, contentTypes, accepts, returnType, null, callback
+      );
+    }
+
     /**
      * Callback function to receive the result of the testJsonFormData operation.
      * @callback module:api/FakeApi~testJsonFormDataCallback

samples/client/petstore/javascript-es6/src/index.js

@@ -63,6 +63,7 @@ import Return from './model/Return';
 import SpecialModelName from './model/SpecialModelName';
 import StringOrBoolean from './model/StringOrBoolean';
 import Tag from './model/Tag';
+import TestInlineFreeformAdditionalPropertiesRequest from './model/TestInlineFreeformAdditionalPropertiesRequest';
 import User from './model/User';
 import AnotherFakeApi from './api/AnotherFakeApi';
 import DefaultApi from './api/DefaultApi';
@@ -411,6 +412,12 @@ export {
      */
     Tag,
 
+    /**
+     * The TestInlineFreeformAdditionalPropertiesRequest model constructor.
+     * @property {module:model/TestInlineFreeformAdditionalPropertiesRequest}
+     */
+    TestInlineFreeformAdditionalPropertiesRequest,
+
     /**
      * The User model constructor.
      * @property {module:model/User}

samples/client/petstore/javascript-es6/src/model/TestInlineFreeformAdditionalPropertiesRequest.js

@@ -0,0 +1,91 @@
+/**
+ * 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: \" \\
+ *
+ * The version of the OpenAPI document: 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.
+ *
+ */
+
+import ApiClient from '../ApiClient';
+
+/**
+ * The TestInlineFreeformAdditionalPropertiesRequest model module.
+ * @module model/TestInlineFreeformAdditionalPropertiesRequest
+ * @version 1.0.0
+ */
+class TestInlineFreeformAdditionalPropertiesRequest {
+    /**
+     * Constructs a new <code>TestInlineFreeformAdditionalPropertiesRequest</code>.
+     * @alias module:model/TestInlineFreeformAdditionalPropertiesRequest
+     * @extends Object
+     */
+    constructor() { 
+        
+        TestInlineFreeformAdditionalPropertiesRequest.initialize(this);
+    }
+
+    /**
+     * Initializes the fields of this object.
+     * This method is used by the constructors of any subclasses, in order to implement multiple inheritance (mix-ins).
+     * Only for internal use.
+     */
+    static initialize(obj) { 
+    }
+
+    /**
+     * Constructs a <code>TestInlineFreeformAdditionalPropertiesRequest</code> from a plain JavaScript object, optionally creating a new instance.
+     * Copies all relevant properties from <code>data</code> to <code>obj</code> if supplied or a new instance if not.
+     * @param {Object} data The plain JavaScript object bearing properties of interest.
+     * @param {module:model/TestInlineFreeformAdditionalPropertiesRequest} obj Optional instance to populate.
+     * @return {module:model/TestInlineFreeformAdditionalPropertiesRequest} The populated <code>TestInlineFreeformAdditionalPropertiesRequest</code> instance.
+     */
+    static constructFromObject(data, obj) {
+        if (data) {
+            obj = obj || new TestInlineFreeformAdditionalPropertiesRequest();
+
+            ApiClient.constructFromObject(data, obj, 'Object');
+            
+
+            if (data.hasOwnProperty('someProperty')) {
+                obj['someProperty'] = ApiClient.convertToType(data['someProperty'], 'String');
+            }
+        }
+        return obj;
+    }
+
+    /**
+     * Validates the JSON data with respect to <code>TestInlineFreeformAdditionalPropertiesRequest</code>.
+     * @param {Object} data The plain JavaScript object bearing properties of interest.
+     * @return {boolean} to indicate whether the JSON data is valid with respect to <code>TestInlineFreeformAdditionalPropertiesRequest</code>.
+     */
+    static validateJSON(data) {
+        // ensure the json data is a string
+        if (data['someProperty'] && !(typeof data['someProperty'] === 'string' || data['someProperty'] instanceof String)) {
+            throw new Error("Expected the field `someProperty` to be a primitive type in the JSON string but got " + data['someProperty']);
+        }
+
+        return true;
+    }
+
+
+}
+
+
+
+/**
+ * @member {String} someProperty
+ */
+TestInlineFreeformAdditionalPropertiesRequest.prototype['someProperty'] = undefined;
+
+
+
+
+
+
+export default TestInlineFreeformAdditionalPropertiesRequest;
+