<elementwithidref-1 xmlns = "http://www.w3.org/XQueryTest/ididrefs" xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance">id1</elementwithidref-1><elementwithidref-2 xmlns = "http://www.w3.org/XQueryTest/ididrefs" xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance">id2</elementwithidref-2> 