geolocation-8.x-3.x-dev/modules/geolocation_leaflet/geolocation_leaflet.links.menu.yml

geolocation_leaflet.nominatim_settings:
  route_name: geolocation_leaflet.nominatim_settings
  title: 'Nominatim geocoding settings'
  parent: system.admin_config_services
  description: 'Configure Nominatim base URL and email.'