      * 
      *  @langversion 3.0
      *  @playerversion AIR 3
-     *  @productversion Flex 4.5.2
+     *  @productversion Flex 4.6
      */
     override public function get length():int
     {

     * 
     *  @langversion 3.0
     *  @playerversion AIR 3
     *  @productversion Flex 4.5.2
     */
    override public function getItemIndex(item:Object):int
    {

     * 
     *  @langversion 3.0
     *  @playerversion AIR 3
     *  @productversion Flex 4.6
     */
    override public function getItemAt(index:int, prefetch:int=0):Object
    {
