code: def test_turan_graph(self):
      assert nx.number_of_edges(nx.turan_graph(13, 4)) == 63
      assert is_isomorphic(
          nx.turan_graph(13, 4),
          nx.complete_multipartite_graph(3, 4, 3, 3),
      )
  
imports: import itertools
  import typing
  import pytest
  import networkx
  from networkx.algorithms.isomorphism.isomorph import graph_could_be_isomorphic
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 40 for calling the TestGeneratorClassic obj's underlying member method code with example usage: obj.test_turan_graph() without return types