code: def test_multidigraph(self):
      G1 = nx.MultiDiGraph()
      G1.add_edges_from(
          (
              ("hardware", "kernel"),
              ("kernel", "hardware"),
              ("kernel", "userspace"),
              ("userspace", "kernel"),
          )
      )
      G2 = nx.MultiDiGraph()
      G2.add_edges_from(
          (
              ("winter", "spring"),
              ("spring", "summer"),
              ("summer", "autumn"),
              ("autumn", "winter"),
          )
      )
  
      assert graph_edit_distance(G1, G2) == 5
      assert graph_edit_distance(G2, G1) == 5
  
imports: import pytest
  import networkx
  from networkx.algorithms.similarity import graph_edit_distance, optimal_edit_paths, optimize_graph_edit_distance
  from networkx.generators.classic import circular_ladder_graph, cycle_graph, path_graph, wheel_graph
label_desc: Use image node_id 14 for calling the TestSimilarity obj's underlying member method code with example usage: obj.test_multidigraph() without return types