public boolean contains(NodeProxy proxy) { final Part part = getPart(proxy.doc, false, 0); return part == null ? false : part.contains(proxy.gid);
public boolean contains(DocumentImpl doc, long nodeId) { final Part part = getPart(doc, false, 0); return part == null ? false : part.contains(nodeId);
	public boolean contains(NodeProxy proxy) {		final Part part = getPart(proxy.doc, false, 0);		return part == null ? false : part.contains(proxy.gid);	}