code: def mock_bentoml_install_from_source(self) -> MagicMock:
      patcher = patch(
          "bentoml._internal.utils.circus.watchfilesplugin.is_pypi_installed_bentoml"
      )
      mock = patcher.start()
      mock.return_value = False
      self.addCleanup(patcher.stop)
  
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 4 for calling the TestServiceReloaderPlugin obj's underlying member method code with example usage: obj.mock_bentoml_install_from_source() without return types