code: def test_core_number(self):
      for G, A in self.GA:
          assert nx.core_number(G) == nx.core_number(A)
  
imports: import pytest
  import networkx
  from networkx.algorithms.approximation import k_components
  from networkx.algorithms.approximation.kcomponents import _AntiGraph, _same
label_desc: Use image node_id 4 for calling the TestAntiGraph obj's underlying member method code with example usage: obj.test_core_number() without return types