return null; }
	public TreePath getPathForRow(JTree tree, int row)	{    TreeNode node = ((TreeNode) (tree.getModel()).getRoot());      if (!tree.isRootVisible()        && tree.isExpanded(new TreePath(getPathToRoot(node, 0))))      node = getNextNode(node);		for (int i = 0; i < row; i++)         node = getNextVisibleNode(node);      // in case nothing was found      if (node == null)         return null;      // something was found    return new TreePath(getPathToRoot(node, 0));   }