code: def _unuran_dir(ret_path: bool = False) -> Union[pathlib.Path, str]:
      """Directory where root unuran/ directory lives."""
      p = pathlib.Path(__file__).parent / "unuran"
      return p if ret_path else str(p)
  
label_desc: Use image node_id 1 for calling a global function with example usage: _unuran_dir(ret_path) and returns: unknown