I'm working on an Express app, and one of the routes looks like this

router.put(
  '/countries/:countryId/regions/:regionId/cities/:cityId',
  runAsyncWrapper(updateCity),
);

Inside the controller I have these checks

const {
    params: { countryId, regionId, cityId },
    body,
  } = req;
   if (!countryId) throw new CountryIdRequired();
   if (!regionId) throw new RegionIdRequired();
   if (!cityId) throw new CityIdRequired();

Do those checks even make any sense? Since these IDs are used in the route string, is there any chance that this controller (which is used only with that one route) will be called, and some of the params will be null or undefined?