code: def test_cutoff(self):
      for G in [self.K10, self.K5, self.K20]:
          for mp in [2, 3, 4]:
              paths = approx.all_pairs_node_connectivity(G, cutoff=mp)
              for source in paths:
                  for target, K in paths[source].items():
                      assert K == mp
  
imports: import pytest
  import networkx
  from networkx.algorithms import approximation
label_desc: Use image node_id 5 for calling the TestAllPairsNodeConnectivityApprox obj's underlying member method code with example usage: obj.test_cutoff() without return types