code: def test_graph_type(self):
      G1 = nx.complete_graph(self.N, nx.MultiDiGraph())
      G2 = nx.MultiGraph(G1)
      G3 = nx.DiGraph(G1)
      G4 = nx.Graph(G1)
      truth = {frozenset(G1)}
      self._check_communities(G1, truth)
      self._check_communities(G2, truth)
      self._check_communities(G3, truth)
      self._check_communities(G4, truth)
  
imports: from itertools import chain, combinations
  import pytest
  import networkx
label_desc: Use image node_id 11 for calling the TestFastLabelPropagationCommunities obj's underlying member method code with example usage: obj.test_graph_type() without return types