code: def __init__(self, worker_id: bytes = None):
      self._worker_id = worker_id
      # self._subscriber_id needs to match the binary format of a random
      # SubscriberID / UniqueID, which is 28 (kUniqueIDSize) random bytes.
      self._subscriber_id = bytes(
          bytearray(random.getrandbits(8) for _ in range(28))
      )
      self._last_batch_size = 0
      self._max_processed_sequence_id = 0
      self._publisher_id = b""
  
imports: import asyncio
  from collections import deque
  import logging
  import random
  from typing import Tuple, List
  import grpc
  from ray._private.utils import get_or_create_event_loop
  import ray._private.gcs_utils
  import ray._private.logging_utils
  from ray.core.generated.gcs_pb2 import ErrorTableData
  from ray.core.generated import dependency_pb2
  from ray.core.generated import gcs_service_pb2_grpc
  from ray.core.generated import gcs_service_pb2
  from ray.core.generated import common_pb2
  from ray.core.generated import pubsub_pb2
label_desc: Use image node_id 1 to create a new _SubscriberBase object  with example: obj = _SubscriberBase(worker_id)