code: def test_can_send_string(grid_search_3_params):
      change = "n_estimators"
      plot.grid_search(grid_search_3_params.cv_results_, change)
  
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 20 for calling a global function with example usage: test_can_send_string(grid_search_3_params) without return types