code: def test_all_pairs_connectivity_icosahedral(self):
      G = nx.icosahedral_graph()
      C = nx.all_pairs_node_connectivity(G)
      assert all(5 == C[u][v] for u, v in itertools.combinations(G, 2))
  
imports: import itertools
  import pytest
  import networkx
  from networkx.algorithms import flow
  from networkx.algorithms.connectivity import local_edge_connectivity, local_node_connectivity
label_desc: Use image node_id 6 for calling the TestAllPairsNodeConnectivity obj's underlying member method code with example usage: obj.test_all_pairs_connectivity_icosahedral() without return types