code: def test_subgraph(self):
      # A is the subgraph
      # B is the full graph
      head = importlib.resources.files(
          "networkx.algorithms.isomorphism.tests"
      )
      subgraph = self.create_graph(head / "si2_b06_m200.A99")
      graph = self.create_graph(head / "si2_b06_m200.B99")
      gm = iso.GraphMatcher(graph, subgraph)
      assert gm.subgraph_is_isomorphic()
      # Just testing some cases
      assert gm.subgraph_is_monomorphic()
  
imports: import importlib.resources
  import os
  import random
  import struct
  import networkx
  from networkx.algorithms import isomorphism
label_desc: Use image node_id 3 for calling the TestVF2GraphDB obj's underlying member method code with example usage: obj.test_subgraph() without return types