code: def test_colors_only(self):
      gm = self.GM(self.g1, self.g2, edge_match=self.emc)
      assert gm.is_isomorphic()
  
imports: import math
  from operator import eq
  import networkx
  import networkx.algorithms.isomorphism
label_desc: Use image node_id 4 for calling the TestEdgeMatch_MultiGraph obj's underlying member method code with example usage: obj.test_colors_only() without return types