def add_edge(self, e1, e2):
        lsucs = self.edges[e1]
        if e2 not in lsucs:
            lsucs.append(e2)
        lpreds = self.reverse_edges[e2]
        if e1 not in lpreds:
            lpreds.append(e1)
dataset/ETHPy150Open androguard/androguard/androguard/decompiler/dad/graph.py/Graph.add_edge/original