code: def tearDownClass(cls):
      shutil.rmtree(cls.save_root)
  
file_path: anago/tests/test_model.py
imports: import os
  import shutil
  import unittest
  from anago.models import BiLSTMCRF, load_model, save_model
label_desc: Use image node_id 2 for calling the TestModel obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types