result.expand();
	public Sequence eval(		Sequence contextSequence,		Item contextItem)		throws XPathException {		StringBuffer buf = new StringBuffer();		Object next;		for(Iterator i = contents.iterator(); i.hasNext(); ) {			next = i.next();			if(next instanceof Expression)				evalEnclosedExpr(((Expression)next).eval(contextSequence, contextItem), buf);			else				buf.append(next);		}		StringValue result = new StringValue(buf.toString());		result.expand();		return result;	}