code: def get_redis_client(self):
      return self._redis_client
  
imports: import functools
  import os
  from logging import getLogger
  from typing import Callable, NamedTuple, Optional
  import redis
  from apscheduler.schedulers.background import BackgroundScheduler
label_desc: Use image node_id 3 for calling the RedisClient obj's underlying member method code with example usage: obj.get_redis_client() and returns: self