ArraySet parents = new ArraySet(getLength());
NodeSet parents = new ExtArrayNodeSet();
	public NodeSet getParents() {		ArraySet parents = new ArraySet(getLength());		NodeProxy p;		long pid;		for (Iterator i = iterator(); i.hasNext();) {			p = (NodeProxy) i.next();			// calculate parent's gid			pid = XMLUtil.getParentId(p.doc, p.gid);			if (pid > -1)				parents.add(new NodeProxy(p.doc, pid, Node.ELEMENT_NODE));		}		return parents;	}