code: def tearDown(self):
      super(IOTest, self).tearDown()
      shutil.rmtree(self._test_dir)
      shutil.rmtree(self._checkpoint_prefix)
      shutil.rmtree(self._save_dir)
  
imports: import os
  import shutil
  from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.experimental.ops import io
  from tensorflow.python.data.kernel_tests import checkpoint_test_base
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import combinations
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the IOTest obj's underlying member method code with example usage: obj.tearDown() without return types