code: def tearDownClass(cls):
      pass
  
file_path: TensorLayer/tests/test_nlp.py
imports: import os
  import unittest
  import nltk
  import tensorlayer
  from tests.utils import CustomTestCase
label_desc: Use image node_id 2 for calling the Test_Leaky_ReLUs obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types