billwerk_subscriptions-1.x-dev/modules/billwerk_subscriptions_handler_default/billwerk_subscriptions_handler_default.links.menu.yml

billwerk_subscriptions_handler_default.settings:
  title: Billwerk Subscriptions Handler Settings
  description: Administer the Billwerk Subscriptions Handler Settings
  parent: system.admin_config_services
  route_name: billwerk_subscriptions_handler_default.settings