code: def test_on_complete_graph(self):
      G = nx.complete_graph(4)
      assert nx.is_eulerian(nx.eulerize(G))
      assert nx.is_eulerian(nx.eulerize(nx.MultiGraph(G)))
  
imports: import collections
  import pytest
  import networkx
label_desc: Use image node_id 7 for calling the TestEulerize obj's underlying member method code with example usage: obj.test_on_complete_graph() without return types