public static TitanVertex getV(TitanGraphTransaction g, Object vid) {
if (!g.vertices(vid).hasNext()) return null;
return (TitanVertex) g.vertices(vid).next();
}
public static TitanEdge getE(TitanGraphTransaction g, Object eid) {
if (!g.edges(eid).hasNext()) return null;
return (TitanEdge) g.edges(eid).next();
}
public static void assertMissing(TitanGraphTransaction g, Object vid) {
assertFalse(g.vertices(vid).hasNext());
}