code: def unpack_bytes(stream: Iterator[bytes]) -> Tuple[bytes, bytes]:
      for msg in stream:
          yield from unpack_helper(msg)
  
imports: import importlib
  import struct
  import json
  from typing import Iterator, Tuple, Union
  import aim.ext.transport.proto.remote_tracking_pb2
  from aim.storage.object import CustomObject
  from aim.storage.types import BLOB
label_desc: Use image node_id 5 for calling a global function with example usage: unpack_bytes(stream) without return types