  *  @playerversion AIR 1.5
  *  @productversion Flex 4
  */
-public class ListBase extends SkinnableDataContainer implements IItemRendererOwner 
+public class ListBase extends SkinnableDataContainer 
 {
     include "../../core/Version.as";
 

    //----------------------------------
    //  labelField
    //----------------------------------
    
    private var _labelField:String;
    private var labelFieldOrFunctionChanged:Boolean; 
    
    /**
     *  labelField

     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    override public function itemToLabel(item:Object):String
    {
    	return LabelUtil.itemToLabel(item, labelField, labelFunction);
    }
