code: function() {
              var userAgentWrapper = UserAgent.getUserAgentInfo();
              var runningBrowser = this._getProperties(userAgentWrapper);
              return !(Object.defineProperty == null || runningBrowser.isIE8);
          }
docs: /* BACKWARD-COMPATIBILITY-END (GitHub #1397) 
  Tells whether property descriptors are fully supported by the <b>running</b> browser or not.
  
  @return {Boolean} <em>true</em> if property descriptors are fully supported, <em>false</em> otherwise.