add((NodeProxy) i.nextItem());
add(i.nextItem());
	public void addAll(Sequence other) throws XPathException {		if (!Type.subTypeOf(other.getItemType(), Type.NODE))			throw new XPathException("sequence argument is not a node sequence");		for (SequenceIterator i = other.iterate(); i.hasNext();) {			add((NodeProxy) i.nextItem());		}	}