         invalidateProperties();
     }
     
-    //--------------------------------------------------------------------------
-    //
-    //  Event Handlers
-    //
-    //--------------------------------------------------------------------------
-    
     /**
      *  @private
      *  Called when an item has been added to this component.

    private var _labelFunction:Function; 
    
    /**
     *  labelFunction
     *
     */
    public function get labelFunction():Function
    {

        }
    }
    
    //--------------------------------------------------------------------------
    //
    //  Event Handlers
    //
    //--------------------------------------------------------------------------
    
    /**
     *  Called when contents within the dataProvider changes.  
     *
     *  @param event The collection change event
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    protected function dataProvider_collectionChangeHandler(event:Event):void
    {
