code: def get_ocr_engine():
      return Page4Engine()
  
file_path: OCRmyPDF/tests/plugins/tesseract_simulate_oom_killer.py
imports: from __future__ import annotations
  import os
  import signal
  from pathlib import Path
  from ocrmypdf import hookimpl
label_desc: Use image node_id 2 for calling a global function with example usage: get_ocr_engine() and returns: Page4Engine