code: def test_subset_can_be_none_when_parameter_set_is_fully_specified(
      grid_search_2_params,
  ):
      change = ("n_estimators", "criterion")
      plot.grid_search(
          grid_search_2_params.cv_results_, change=change, subset=None
      )
  
imports: import sys
  from functools import partial
  import pytest
  from matplotlib.testing.decorators import image_comparison, cleanup
  from sklearn_evaluation import plot
label_desc: Use image node_id 22 for calling a global function with example usage: test_subset_can_be_none_when_parameter_set_is_fully_specified(grid_search_2_params) without return types