code: def test_use_t_summary(self):
      orig_val = self.res1.use_t
      self.res1.use_t = True
      summ = self.res1.summary()
      assert "P>|t|" in str(summ)
      self.res1.use_t = orig_val
  
imports: import numpy
  from scipy import stats
  from statsmodels.base.model import GenericLikelihoodModel
  from numpy.testing import assert_array_less, assert_almost_equal, assert_allclose
label_desc: Use image node_id 2 for calling the CheckGenericMixin obj's underlying member method code with example usage: obj.test_use_t_summary() without return types