code: def tearDown(self):
      self.configspace = None
      self.x_train = None
      self.x_test = None
      self.sm_kde = None
      self.hp_kde_full = None
      self.hp_kde_factor = None
  
imports: import os
  import unittest
  import numpy
  import statsmodels.api
  import ConfigSpace
  from hpbandster.optimizers.kde.mvkde import MultivariateKDE
  from pdb import set_trace
label_desc: Use image node_id 3 for calling the Base1dTest obj's underlying member method code with example usage: obj.tearDown() without return types