     }
     
     /**
-     * 
-     *  @langversion 3.0
-     *  @playerversion Flash 10
-     *  @playerversion AIR 2.5
-     *  @productversion Flex 4.5
-     */ 
-    // TODO (chiedozi): Do we need to support unknown orientation?
-    public function get landscapeOrientation():Boolean
-    {
-        return systemManager.stage.deviceOrientation == StageOrientation.ROTATED_LEFT ||
-            systemManager.stage.deviceOrientation == StageOrientation.ROTATED_RIGHT;
-    }
-    
-    /**
-     * 
-     *  @langversion 3.0
-     *  @playerversion Flash 10
-     *  @playerversion AIR 2.5
-     *  @productversion Flex 4.5
-     */ 
-    protected function deviceKeyDownHandler(event:KeyboardEvent):void
+     *  @private
+     */ 
+    private function deviceKeyDownHandler(event:KeyboardEvent):void
     {
         var key:uint = event.keyCode;
         

    //  Properties
    //
    //--------------------------------------------------------------------------

    //----------------------------------
    //  persistenceManager
    //----------------------------------

        if (value == _persistenceManager)
            return;
        
        if (_persistenceManager)
            _persistenceManager.flush();
        
        _persistenceManager = value;
    }
