farm-2.x-dev/modules/core/map/modules/mapbox/farm_map_mapbox.routing.yml

farm_map_mapbox.settings:
  path: 'farm/settings/map/mapbox'
  defaults:
    _form: '\Drupal\farm_map_mapbox\Form\MapboxSettingsForm'
    _title: 'Mapbox settings'
  requirements:
    _permission: 'administer farm map'