text: /**
   * @class Ext.fx.Runner
   * @private
   */
  Ext.define('Ext.fx.Runner', {
      requires: [
          'Ext.fx.runner.CssTransition'
  //        'Ext.fx.runner.CssAnimation'
      ],
  
      constructor: function () {
          return new Ext.fx.runner.CssTransition();
      }
  });
  