hasEdgeLabelIndexE :: LabelIndex -> Edge -> GS Bool
hasEdgeLabelIndexE li e = return $ hasEdgeLabelIndexSE li e
hasEdgeLabelIndexE :: LabelIndex -> Edge -> GS Bool
hasEdgeLabelIndexE li e = return $ hasEdgeLabelIndexSE li e
hasEdgeLabelIndexE li e = return $ hasEdgeLabelIndexSE li e