code: def test_aux(self):
      prob = res_probit.predict()
      assert prob.shape == (4642,)
  
file_path: statsmodels/statsmodels/treatment/tests/test_teffects.py
imports: import os
  import numpy
  from numpy.testing import assert_allclose
  import pandas
  import pytest
  from statsmodels.regression.linear_model import OLS
  from statsmodels.discrete.discrete_model import Probit
  from statsmodels.treatment.treatment_effects import TreatmentEffect
  from .results import results_teffects
label_desc: Use image node_id 2 for calling the TestTEffects obj's underlying member method code with example usage: obj.test_aux() without return types