Sequence seq = orderSpecs[i].getSortExpression().eval(docs, null);
Sequence seq = orderSpecs[i].getSortExpression().eval(null);
		public Entry(Item item) throws XPathException {			this.item = item;			values = new AtomicValue[orderSpecs.length];			for(int i = 0; i < orderSpecs.length; i++) {				Sequence seq = orderSpecs[i].getSortExpression().eval(docs, null);				values[i] = AtomicValue.EMPTY_VALUE;				if(seq.getLength() == 1) {					values[i] = seq.itemAt(0).atomize();				} else if(seq.getLength() > 1)					throw new XPathException("expected a single value for order expression " +						orderSpecs[i].getSortExpression().pprint() + " ; found: " + seq.getLength());			}		}