     /**
      * Constructor.
      */
-     public function GroupBase()
+    public function GroupBase()
     {
         super();
         tabChildren = true;

import mx.events.RendererExistenceEvent;
import mx.events.PropertyChangeEvent;
import mx.events.PropertyChangeEventKind;
import mx.graphics.Graphic;
import mx.graphics.IGraphicElement;
import mx.graphics.MaskType;
import mx.graphics.baseClasses.GraphicElement;
import mx.layout.BasicLayout;
import mx.core.ILayoutElement;
import mx.layout.LayoutBase;

    {
        super.invalidateDisplayList();
        layoutInvalidateDisplayListFlag = true;
    }
    
    /**
     *  @private
     *  Invalidates the size, but doesn't run layout measure pass. This is useful
     *  for subclasses like Group that perform additional work there - like running
     *  the graphic element measure pass.
     */
    mx_internal function $invalidateSize():void
    {
        super.invalidateSize();
    }
    
    /**
     *  @private
     *  Invalidates the display list, but doesn't run layout updateDisplayList pass.
     *  This is useful for subclasses like Group that perform additional work on
     *  updateDisplayList - like redrawing the graphic elements.
     */
    mx_internal function $invalidateDisplayList():void
    {
        super.invalidateDisplayList();
    }
    
    /**
