code: def my_handler(self, message):
      self.message = ["my handler", message]
  
imports: import asyncio
  import functools
  import socket
  import sys
  from typing import Optional
  from unittest.mock import patch
  import pytest
  import pytest_asyncio
  import redis.asyncio
  from redis.exceptions import ConnectionError
  from redis.typing import EncodableT
  from redis.utils import HIREDIS_AVAILABLE
  from tests.conftest import get_protocol_version, skip_if_server_version_lt
  from .compat import aclosing, create_task, mock
label_desc: Use image node_id 1 for calling the TestPubSubRESP3Handler obj's underlying member method code with example usage: obj.my_handler(message) without return types