code: def test_set_params_stacking_regressor():
      """Test set_params method of StackingRegressor class."""
      stacking_regressor = StackingRegressor()
      stacking_regressor.set_params(n_folds=6)
      assert stacking_regressor.n_folds == 6
      stacking_regressor.set_params(copy=True)
      assert stacking_regressor.copy
      stacking_regressor.set_params(random_state=2)
      assert stacking_regressor.random_state == 2
      stacking_regressor.set_params(verbose=False)
      assert not stacking_regressor.verbose
      with pytest.warns(UserWarning) as record:
          stacking_regressor.set_params(wrong_parameters=None)
      assert len(record) == 1
  
file_path: MLBox/tests/test_stacking_regressor.py
imports: import pytest
  import pandas
  import numpy
  from sklearn.linear_model import LinearRegression
  from mlbox.model.regression.stacking_regressor import StackingRegressor
label_desc: Use image node_id 3 for calling a global function with example usage: test_set_params_stacking_regressor() without return types