code: def test_simrank_numpy_source_and_target(self):
      G = nx.cycle_graph(5)
      expected = 1.0
      actual = nx.similarity._simrank_similarity_numpy(
          G, source=0, target=0
      )
      np.testing.assert_allclose(expected, actual, atol=1e-7)
  
imports: import pytest
  import networkx
  from networkx.algorithms.similarity import graph_edit_distance, optimal_edit_paths, optimize_graph_edit_distance
  from networkx.generators.classic import circular_ladder_graph, cycle_graph, path_graph, wheel_graph
label_desc: Use image node_id 38 for calling the TestSimilarity obj's underlying member method code with example usage: obj.test_simrank_numpy_source_and_target() without return types