code: def setUp(self):
      super(DFUtilTest, self).setUp()
      # remove any prior test artifacts
      shutil.rmtree(self.tfrecord_dir, ignore_errors=True)
  
file_path: TensorFlowOnSpark/tests/test_dfutil.py
imports: import os
  import shutil
  import test
  import unittest
  from tensorflowonspark import dfutil
label_desc: Use image node_id 3 for calling the DFUtilTest obj's underlying member method code with example usage: obj.setUp() without return types