code: def tearDown(self) -> None:
      self.root.cleanup()
  
file_path: mmocr/tests/test_datasets/test_preparers/test_parsers/test_wildreceipt_parsers.py
imports: import json
  import os.path
  import tempfile
  import unittest
  from mmocr.datasets.preparers.parsers.wildreceipt_parser import WildreceiptKIEAnnParser, WildreceiptTextDetAnnParser
  from mmocr.utils import list_to_file
label_desc: Use image node_id 4 for calling the TestWildReceiptParsers obj's underlying member method code with example usage: obj.tearDown() without return types