code: def setUp(self) -> None:
      self.path = "tests/data/det_toy_dataset/imgs/test"
  
imports: import json
  import os
  import tempfile
  import unittest
  from mmocr.utils import check_integrity, get_md5, is_archive, list_files, list_from_file, list_to_file
label_desc: Use image node_id 1 for calling the TestListFiles obj's underlying member method code with example usage: obj.setUp() without return types