code: def is_macos():
      return platform.system() == "Darwin"
  
imports: from __future__ import annotations
  import platform
  import sys
  from pathlib import Path
  from subprocess import CompletedProcess, run
  import pytest
  from ocrmypdf import api, pdfinfo
  from ocrmypdf._exec import unpaper
  from ocrmypdf._plugin_manager import get_parser_options_plugins
  from ocrmypdf.exceptions import ExitCode
label_desc: Use image node_id 2 for calling a global function with example usage: is_macos() and returns: unknown