code: def test_group_tukey(self):
      res_t = get_thsd(self.mc, alpha=self.alpha)
      assert_almost_equal(res_t[4], self.confint2, decimal=2)
  
imports: from statsmodels.compat.python import asbytes
  from io import BytesIO
  import warnings
  import numpy
  import pandas
  import pytest
  from numpy.testing import assert_, assert_allclose, assert_almost_equal, assert_equal, assert_raises
  from statsmodels.stats.libqsturng import qsturng
  from statsmodels.stats.multicomp import tukeyhsd, pairwise_tukeyhsd, MultiComparison
label_desc: Use image node_id 3 for calling the CheckTuckeyHSDMixin obj's underlying member method code with example usage: obj.test_group_tukey() without return types