      *  @return The parent node containing the node as child, 
      *  <code>null</code> for a top-level node,  
      *  and <code>undefined</code> if the parent cannot be determined.
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 9
+     *  @playerversion AIR 1.1
+     *  @productversion Flex 3
      */
     function getParent(node:Object, collection:ICollectionView, model:Object = null):Object;
 }

     *  
     *  @return The depth of the node, where 0 corresponds to the top level, 
     *  and -1 if the depth cannot be calculated.
     */
    function getNodeDepth(node:Object, iterator:IViewCursor, model:Object = null):int;


 *  to a collection of data that is displayed by a Tree control.
 *
 *  @see mx.collections.ICollectionView
 *  
 *  @langversion 3.0
 *  @playerversion Flash 9
 *  @playerversion AIR 1.1
 *  @productversion Flex 3
 */
public interface ITreeDataDescriptor2 extends ITreeDataDescriptor
{
