address-8.x-1.x-dev/tests/modules/address_test/address_test.services.yml

services:
  address_test.event_subscriber:
    class: Drupal\address_test\EventSubscriber\AddressTestEventSubscriber
    tags:
      - { name: event_subscriber }

  address_test.great_britain_subscriber:
    class: Drupal\address_test\EventSubscriber\GreatBritainEventSubscriber
    tags:
      - { name: event_subscriber }