decoupled_router.routing.yml

decoupled_router.path_translation:
  path: '/router/translate-path'
  defaults:
    _title: 'Translates an incoming path into a formatted response.'
    _controller: '\Drupal\decoupled_router\Controller\PathTranslator::translate'
  methods: [GET]
  options:
    _auth: ['basic_auth', 'cookie', 'oauth2']
  requirements:
    _permission: 'access content'
    _format: json