public Iterator iterator(DocumentImpl doc, long address) {
public Iterator iterator(DocumentImpl doc, NodeProxy node) {
	public Iterator iterator(DocumentImpl doc, long address) {		try {			return new DOMFileIterator(owner, doc, this, address);		} catch (IOException ioe) {			LOG.warn(ioe);		} catch (BTreeException bte) {			LOG.warn(bte);		}		return null;	}