code: def dummy_data_folder(self):
      if self.config is not None:
          # structure is dummy / config_name / version_name
          return os.path.join(
              "dummy", self.config.name, self.version_name
          )
      # structure is dummy / version_name
      return os.path.join("dummy", self.version_name)
  
imports: import os
  import re
  import urllib.parse
  from pathlib import Path
  from typing import Callable, List, Optional, Union
  from zipfile import ZipFile
  from ..utils.file_utils import cached_path, hf_github_url
  from ..utils.logging import get_logger
  from ..utils.version import Version
label_desc: Use image node_id 3 for calling the MockDownloadManager obj's underlying member method code with example usage: obj.dummy_data_folder() and returns: os, os