code: def setup_class(cls):
      cls.res2 = tost_clinic_paired_1
      x1, x2 = clinic[:15, 2], clinic[15:, 2]
      cls.res1 = Holder()
      res = smws.ttost_paired(x1, x2, -0.6, 0.6, transform=None)
      cls.res1.pvalue = res[0]
      # cls.res1.df = res[1][-1] not yet
      res_ds = smws.DescrStatsW(x1 - x2, weights=None, ddof=0)
      # tost confint 2*alpha TODO: check again
      cls.res1.tconfint_diff = res_ds.tconfint_mean(0.1)
      cls.res1.confint_05 = res_ds.tconfint_mean(0.05)
      cls.res1.mean_diff = res_ds.mean
      cls.res1.std_mean_diff = res_ds.std_mean
  
      cls.res2b = ttest_clinic_paired_1
  
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_equal, assert_
  import pytest
  import statsmodels.stats.weightstats
  from statsmodels.tools.testing import Holder
label_desc: Use image node_id 1 for calling the TestTostp1 obj's underlying member method code with example usage: obj.setup_class(cls) without return types