code: def test_rho(self):
      assert_almost_equal(
          self.res.model.rho, self.results.rho, 3
      )  # pylint: disable-msg=E1101
  
      assert_almost_equal(self.res.llf, self.results.ll, 4)
  
file_path: statsmodels/statsmodels/regression/tests/test_glsar_stata.py
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_allclose, assert_equal
  from statsmodels.regression.linear_model import GLSAR
  from statsmodels.tools.tools import add_constant
  from statsmodels.datasets import macrodata
label_desc: Use image node_id 2 for calling the TestGLSARCorc obj's underlying member method code with example usage: obj.test_rho() without return types