code: def run_append_stderr(*args, **kwargs):
      proc = run_polling_stderr(*args, **kwargs)
      proc.stderr += "\n" + ELISION_WARNING + "\n"
      return proc
  
imports: from __future__ import annotations
  from unittest.mock import patch
  from ocrmypdf import hookimpl
  from ocrmypdf.builtin_plugins import ghostscript
  from ocrmypdf.subprocess import run_polling_stderr
label_desc: Use image node_id 1 for calling a global function with example usage: run_append_stderr() and returns: proc