code: def setup_class(cls):
      cls.res = coint_johansen(dta, -1, 8)
      cls.nobs_r = 173 - 1 - 8
  
      cls.res1_m = np.array(
          [
              260.6786029744658,
              162.7966072512681,
              105.8253545950566,
              71.16133060790817,
              47.68490211260372,
              28.11843682526138,
              13.03968537077271,
              2.25398078597622,
              137.9954,
              106.7351,
              79.5329,
              56.2839,
              37.0339,
              21.7781,
              10.4741,
              2.9762,
              143.6691,
              111.7797,
              83.9383,
              60.0627,
              40.1749,
              24.2761,
              12.3212,
              4.1296,
              154.7977,
              121.7375,
              92.7136,
              67.63670000000001,
              46.5716,
              29.5147,
              16.364,
              6.9406,
          ]
      )
      cls.res2_m = np.array(
          [
              97.88199572319769,
              56.97125265621156,
              34.66402398714837,
              23.47642849530445,
              19.56646528734234,
              15.07875145448866,
              10.7857045847965,
              2.25398078597622,
              45.893,
              39.9085,
              33.9271,
              27.916,
              21.837,
              15.7175,
              9.4748,
              2.9762,
              48.8795,
              42.7679,
              36.6301,
              30.4428,
              24.1592,
              17.7961,
              11.2246,
              4.1296,
              55.0335,
              48.6606,
              42.2333,
              35.7359,
              29.0609,
              22.2519,
              15.0923,
              6.9406,
          ]
      )
  
imports: import os
  import warnings
  import numpy
  from numpy.testing import assert_almost_equal, assert_equal
  import pandas
  import pytest
  from statsmodels.tools.sm_exceptions import HypothesisTestWarning
  from statsmodels.tsa.vector_ar.vecm import coint_johansen
label_desc: Use image node_id 1 for calling the TestCointJohMin18 obj's underlying member method code with example usage: obj.setup_class(cls) without return types