code: def test_graph(self):
      head = importlib.resources.files(
          "networkx.algorithms.isomorphism.tests"
      )
      g1 = self.create_graph(head / "iso_r01_s80.A99")
      g2 = self.create_graph(head / "iso_r01_s80.B99")
      gm = iso.GraphMatcher(g1, g2)
      assert gm.is_isomorphic()
  
imports: import importlib.resources
  import os
  import random
  import struct
  import networkx
  from networkx.algorithms import isomorphism
label_desc: Use image node_id 2 for calling the TestVF2GraphDB obj's underlying member method code with example usage: obj.test_graph() without return types