code: function(fileKey, fileName, mimeType, params, headers, httpMethod) {
      this.fileKey = fileKey || null;
      this.fileName = fileName || null;
      this.mimeType = mimeType || null;
      this.params = params || null;
      this.headers = headers || null;
      this.httpMethod = httpMethod || null;
  }
docs: /*
  
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at
  
  http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing,
  software distributed under the License is distributed on an
  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, either express or implied.  See the License for the
  specific language governing permissions and limitations
  under the License.
  
   
  Options to customize the HTTP request used to upload files.
  @constructor
  @param fileKey {String}   Name of file request parameter.
  @param fileName {String}  Filename to be used by the server. Defaults to image.jpg.
  @param mimeType {String}  Mimetype of the uploaded file. Defaults to image/jpeg.
  @param params {Object}    Object with key: value params to send to the server.
  @param headers {Object}   Keys are header names, values are header values. Multiple
  headers of the same name are not supported.