code: def __enter__(self):
      for p in self.patchers:
          p.start()
  
file_path: jupyter_core/tests/mocking.py
imports: from __future__ import annotations
  import os
  import sys
  from unittest.mock import patch
label_desc: Use image node_id 2 for calling the MultiPatch obj's underlying member method code with example usage: obj.__enter__() without return types