code: def test_color1(self):
      assert not nx.is_isomorphic(self.g1, self.g2, node_match=self.nm)
  
imports: import math
  from operator import eq
  import networkx
  import networkx.algorithms.isomorphism
label_desc: Use image node_id 4 for calling the TestNodeMatch_Graph obj's underlying member method code with example usage: obj.test_color1() without return types