code: function() {
  			try {
  				sap.ui.require(["sap/ui/rta/RuntimeAuthoring"], function (RuntimeAuthoring) {
  					this.byId("toggleRTA").setVisible(true);
  				}.bind(this));
  			} catch (oException) {
  				jQuery.sap.log.info("sap.ui.rta.RuntimeAuthoring could not be loaded, UI adaptation mode is disabled");
  			}
  		}
docs: /*
  Loades runtime authoring asynchronously (will fail if the rta library is not loaded)