def to_undirected(self):
        return deepcopy(self)
Test the open and close functionality using a path specification.
dataset/ETHPy150Open gkno/gkno_launcher/src/networkx/classes/graph.py/Graph.to_undirected--crossover with--dataset/ETHPy150Open log2timeline/dfvfs/tests/file_io/compressed_stream_io.py/LZMACompressedStreamTest.testOpenClosePathSpec