/** * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved. * For licensing, see LICENSE.md or http://ckeditor.com/license */ ( function() { 'use strict'; /** * JSONP communication. * * @private * @singleton * @class CKEDITOR.plugins.embedBase._jsonp */ var Jsonp = { /** * Creates a `