code: def test_summary(self):
      with pytest.warns(UserWarning):
          self.res1.summary()
  
imports: import os
  import numpy
  import pandas
  import pytest
  from numpy.testing import assert_allclose
  from statsmodels.regression.linear_model import OLS, GLS
  from statsmodels.sandbox.regression.penalized import TheilGLS
label_desc: Use image node_id 5 for calling the TestTheilTextile obj's underlying member method code with example usage: obj.test_summary() without return types