code: def setup_call_mock(self, watcher_name: str) -> MagicMock:
      patcher = patch.object(ServiceReloaderPlugin, "call")
      call_mock = patcher.start()
      self.addCleanup(patcher.stop)
      call_mock.side_effect = [
          {"watchers": [watcher_name]},
          {"options": {"cmd": watcher_name}},
          None,
      ]
      return call_mock
  
imports: from __future__ import annotations
  import logging
  import os
  import typing
  from pathlib import Path
  from typing import TYPE_CHECKING
  from unittest import skipUnless
  from unittest.mock import patch
  import pytest
  from circus.tests.support import TestCircus
  from bentoml._internal.utils.circus.watchfilesplugin import ServiceReloaderPlugin
  from bentoml._internal.utils.pkg import source_locations
label_desc: Use image node_id 8 for calling the TestServiceReloaderPlugin obj's underlying member method code with example usage: obj.setup_call_mock(watcher_name) and returns: call_mock