code: def test_equitable_color_empty(self):
      G = nx.empty_graph()
      coloring = nx.coloring.equitable_color(G, max_degree(G) + 1)
      assert is_equitable(G, coloring)
  
imports: import itertools
  import pytest
  import networkx
label_desc: Use image node_id 11 for calling the TestColoring obj's underlying member method code with example usage: obj.test_equitable_color_empty() without return types