code: def test_clone():
      regr = LinearRegression()
      clone(regr)
  
imports: import numpy
  from numpy.testing import assert_almost_equal
  from sklearn.base import clone
  from mlxtend.data import boston_housing_data
  from mlxtend.regressor import LinearRegression
label_desc: Use image node_id 16 for calling a global function with example usage: test_clone() without return types