code: def test_read_simple_undirected_graphml(self):
      G = self.simple_undirected_graph
      H = nx.read_gexf(self.simple_undirected_fh)
      assert sorted(G.nodes()) == sorted(H.nodes())
      assert sorted(sorted(e) for e in G.edges()) == sorted(
          sorted(e) for e in H.edges()
      )
      self.simple_undirected_fh.seek(0)
  
imports: import io
  import time
  import pytest
  import networkx
label_desc: Use image node_id 4 for calling the TestGEXF obj's underlying member method code with example usage: obj.test_read_simple_undirected_graphml() without return types