private final Part getPart(int docId, boolean create, int sizeHint) {
private Part getPart(int docId, boolean create, int sizeHint) {
	private final Part getPart(int docId, boolean create, int sizeHint) {		if (docId == lastDoc && lastPart != null)			return lastPart;		Part part = (Part) map.get(docId);		if (part == null && create) {			part = new Part(sizeHint);			map.put(docId, part);		}		lastPart = part;		lastDoc = docId;		return part;	}