code: def install_translations(config):
      
  
      if not config:
          return
  
      from . import _translation
      checks_translation = gettext.translation(domain=config["domain"],
                                               localedir=internal.check_dir / config["localedir"],
                                               fallback=True)
      _translation.add_fallback(checks_translation)
docs: Add check translations according to ``config`` as a fallback to existing translations