code: async def get_bucket(self, *,
                           chat: typing.Union[str, int, None] = None,
                           user: typing.Union[str, int, None] = None,
                           default: typing.Optional[dict] = None) -> typing.Dict:
          
          raise NotImplementedError
docs: Get bucket for user in chat. Return `default` if no data is provided in storage.
  
          Chat or user is always required. If one of them is not provided,
          you have to set missing value based on the provided one.
  
          :param chat:
          :param user:
          :param default:
          :return: