     /**
      *  @private
      */  
-    override public function get exitApplicationOnBackKey():Boolean
+    override mx_internal function get exitApplicationOnBackKey():Boolean
     {
         return length <= 1;
     }

        if (actionBar)
        {
            invalidateActionBarProperties();
            updatePropertiesForView(pendingView);
        }
        
        if (parentNavigator)
            parentNavigator.updatePropertiesForView(pendingView);
        
        // Need to force state change by calling validate properties again
        if (overlayControls != pendingView.overlayControls)

        // part in transitions. If the view change is processed during this validation,
        // the following flags will be false.
		if (actionBarPropertyInvalidated)
            updateControlsForView(activeView);
			
		if (actionBarVisibilityInvalidated)
            commitVisibilityChanges();
