class_docstr: config unit test
docstr: set default config unittest 
docstr_tok: ["set","default","config","unittest"]
code: def test_setdefault_config(self):
      """set default config unittest"""
      self.assertEqual(True, True)
  
file_path: delta/delta/utils/config_test.py
imports: import tempfile
  from absl import logging
  import os
  import delta.compat
  from delta import utils
  from delta import PACKAGE_ROOT_DIR
label_desc: Use image node_id 6 for calling the ConfigTest obj's underlying member method code with example usage: obj.test_setdefault_config() without return types