code: def get_metadata(self, storage_id: str) -> Dict[str, Any]:
      # TODO: when the StorageManager supports downloading with a file filter, we should attempt
      # to download metadata.json from the checkpoint and read it here.
      raise NotImplementedError(
          "DummyCheckpointContext is not able to read metadata from checkpoint storage yet."
      )
  
imports: import contextlib
  import datetime
  import enum
  import hashlib
  import json
  import logging
  import os
  import pathlib
  import uuid
  from typing import Any, Callable, Dict, Iterator, List, Optional, Set, Tuple, Union
  from determined import core, tensorboard
  from determined.common import api, storage
  from determined.common.api import bindings
label_desc: Use image node_id 3 for calling the DummyCheckpointContext obj's underlying member method code with example usage: obj.get_metadata(storage_id) without return types