} else if (this==LABEL) { if (e instanceof TitanEdge) { return (O)((TitanEdge) e).getLabel(); } else if (e instanceof TitanVertex) { return (O)((TitanVertex)e).getLabel();
} else if (this==LABEL) { if (e instanceof TitanEdge) { return (O)((TitanEdge) e).getLabel(); } else if (e instanceof TitanVertex) { return (O)((TitanVertex)e).getLabel();