code: def gen_uid(cls, band_name: str):
      return f"receiver_manager_{band_name}"
  
file_path: mars/mars/services/storage/transfer.py
imports: import asyncio
  import logging
  from dataclasses import dataclass
  from typing import Dict, List
  from ...None import oscar
  from ...lib.aio import alru_cache
  from ...storage import StorageLevel
  from ...utils import dataslots
  from .core import DataManagerActor, WrappedStorageFileObject
  from .handler import StorageHandlerActor
label_desc: Use image node_id 2 for calling the ReceiverManagerActor obj's underlying member method code with example usage: obj.gen_uid(cls, band_name) and returns: str, band_name