code: def test_summary(self):
      res1 = self.res1
      summ = res1.summary()
      assert_equal(len(summ.tables[1]), len(res1.params) + 1)
  
imports: from statsmodels.compat.python import lmap
  import numpy
  import pandas
  from scipy import stats
  import pytest
  from statsmodels.regression.linear_model import OLS
  from statsmodels.sandbox.regression import gmm
  from numpy.testing import assert_allclose, assert_equal
label_desc: Use image node_id 3 for calling the CheckGMM obj's underlying member method code with example usage: obj.test_summary() without return types