     /** 
      *  This is called by addItemAt and when the source is initially
      *  assigned.
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 9
+     *  @playerversion AIR 1.1
+     *  @productversion Flex 3
      */
     private function startTrackUpdates(item:Object):void
     {


    /**
     *  Not Supported in Tree.
     */
    public function set filterFunction(value:Function):void
    {

    /**
     *  The length of the currently parsed collection.  This
     *  length only includes nodes that we know about.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
	public function get length():int
	{
