The implementation of the method isn't correctly implemented, and as a result the following uni test fails:

        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        dbf.setNamespaceAware(true);
        DocumentBuilder parser = dbf.newDocumentBuilder();
        Document dom = parser.parse(Bug.class.getResourceAsStream("test2.xml"));

        DOMResult r = new DOMResult();
        
        r.setNode(dom.getDocumentElement());
        r.setNextSibling(r.getNode().getFirstChild());

test2.xml:
<?xml version="1.0"?>
<root>
  <f1/>
  <f2/>
  <f3/>
</root>

###@###.### 2004-07-13
###@###.### 2004-07-13