code: def test_size(self):
      G = nx.path_graph(2)
      M = nx.mycielskian(G, 2)
      assert len(M) == 11
      assert M.size() == 20
  
imports: import networkx
label_desc: Use image node_id 2 for calling the TestMycielski obj's underlying member method code with example usage: obj.test_size() without return types