code: def setup_class(cls):
      cls.res2 = tost_clinic_indep_1_pooled
      x, y = clinic[:15, 2], clinic[15:, 2]
      cls.res1 = Holder()
      res = smws.ttost_ind(x, y, -0.6, 0.6, usevar="pooled")
      cls.res1.pvalue = res[0]
  
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 TestTostip1 obj's underlying member method code with example usage: obj.setup_class(cls) without return types