I need help with localized routes. My routes.yaml looks like this:

collections:
  rooms:
    de: '/uebernachten/{room_type}/{slug}'
    en: '/stay/{room_type}/{slug}'

Each collection entry has a taxonomy of {room_type}. This taxonomy is localizable. I need the {room_type} to be the localized slug of the taxonomy. Right now it just takes the title of the standard language.