code: def test_strategy_as_function(self):
      graph = lf_shc()
      colors_1 = nx.coloring.greedy_color(graph, "largest_first")
      colors_2 = nx.coloring.greedy_color(
          graph, nx.coloring.strategy_largest_first
      )
      assert colors_1 == colors_2
  
imports: import itertools
  import pytest
  import networkx
label_desc: Use image node_id 5 for calling the TestColoring obj's underlying member method code with example usage: obj.test_strategy_as_function() without return types