code: def tearDown(self):
      shutil.rmtree(self.tmp_dir)
  
imports: import os
  import unittest
  import random
  import shutil
  import numpy
  from scipy import sparse
  from gensim.utils import is_corpus, mock_data
  from gensim.corpora.sharded_corpus import ShardedCorpus
label_desc: Use image node_id 2 for calling the TestShardedCorpus obj's underlying member method code with example usage: obj.tearDown() without return types