code: def setUp(self):
      NiftyNetTestCase.setUp(self)
      download(
          self.zoo_id, download_if_already_existing=True, verbose=False
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os, sys, unittest
  import tensorflow
  from niftynet.utilities.download import download
  from niftynet.utilities.niftynet_global_config import NiftyNetGlobalConfig
  from niftynet import main
  from niftynet.application.base_application import SingletonApplication
  from tests.niftynet_testcase import NiftyNetTestCase
label_desc: Use image node_id 1 for calling the AnisotropicNetsBratsChallengeModelZooTest obj's underlying member method code with example usage: obj.setUp() without return types