swup-1.0.0-alpha1/swup_ui/swup_ui.routing.yml

swup.settings:
  path: '/admin/config/user-interface/swup/settings'
  defaults:
    _form: '\Drupal\swup_ui\Form\SwupSettings'
    _title: 'Swup settings'
  requirements:
    _permission: 'administer swup'
  options:
    _admin_route: TRUE