function p = parent(tree,uid)
% XMLTREE/PARENT Parent Method
% FORMAT uid = parent(tree,uid)
% 
% tree   - XMLTree object
% uid    - UID of the lonely child
% p      - UID of the parent ([] if root is the child)
%__________________________________________________________________________
%
% Return the uid of the parent of a node.
%__________________________________________________________________________
% Copyright (C) 2002-2011  http://www.artefact.tk/

% Guillaume Flandin
% $Id: parent.m 4460 2011-09-05 14:52:16Z guillaume $

p = tree.tree{uid}.parent;