code: def download(self, destination: Optional[str] = None) -> None:
      verify_type("destination", destination, (str, type(None)))
      self._backend.download_file_set(
          self._container_id,
          self._container_type,
          self._path,
          destination,
      )
  
file_path: neptune-client/src/neptune/attributes/file_set.py
imports: import os
  from typing import Iterable, List, Optional, Union
  from neptune.api.dtos import FileEntry
  from neptune.attributes.attribute import Attribute
  from neptune.internal.operation import DeleteFiles, UploadFileSet
  from neptune.internal.utils import verify_collection_type, verify_type
  from neptune.types.file_set import FileSet
label_desc: Use image node_id 5 for calling the FileSet obj's underlying member method code with example usage: obj.download(destination) without return types