class_docstr: Class for towhee file about hub token.
code: def save(self) -> None:
      if not self._file.parent.exists():
          self._file.parent.mkdir(parents=True)
      self._file.write_text(self._token)
  
file_path: towhee/towhee/utils/hub_file_utils.py
imports: from pathlib import Path
label_desc: Use image node_id 6 for calling the HubFileUtils obj's underlying member method code with example usage: obj.save() without return types