code: def init_timer(client_id):
      
      if client_id in timers and timers[client_id]:
          timers[client_id].start()
          return
      # Create a timer to call check_new_message function after every 2 seconds.
      # client_id param is needed to be passed to check_new_message
      timers[client_id] = RepeatedTimer(2, check_new_messages, client_id)
docs: Create a timer for the client driver to watch for events
      
      @param client_id: ID of clinet user