      *  @playerversion AIR 1.5
      *  @productversion Flex 4
      */
-    public function discardDisplayObject(element:IGraphicElement):void
+    mx_internal function discardDisplayObject(element:IGraphicElement):void
     {
         var oldDisplayObject:DisplayObject = element.displayObject;
         if (!oldDisplayObject)

 *  @productversion Flex 4
 */
public class Group extends GroupBase implements IVisualElementContainer, 
                                                IGraphicElementHost, 
                                                ISharedDisplayObject
{
    /**

            // the invalid ones.  We should only redraw, no need to redo the layout.
            super.$invalidateDisplayList();
        }
    }

    /**
