code: def setup_class(cls):
      cls.copula = FrankCopula()
      cls.cop_args = (0.5,)
      cls.k_copparams = 1
      cls.copula_fixed = FrankCopula(*cls.cop_args)
  
imports: import numpy
  from scipy import stats
  from numpy.testing import assert_allclose
  from statsmodels.base.model import GenericLikelihoodModel
  from statsmodels.distributions.copula.api import ClaytonCopula, GaussianCopula, FrankCopula, GumbelCopula, IndependenceCopula, CopulaDistribution
  from statsmodels.distributions.copula import depfunc_ev
  from statsmodels.distributions.copula.extreme_value import ExtremeValueCopula
label_desc: Use image node_id 1 for calling the TestFrank obj's underlying member method code with example usage: obj.setup_class(cls) without return types