Version 1

[yaffs-website] / web / core / modules / system / tests / modules / display_variant_test / display_variant_test.services.yml

services:
  display_variant_test.page_display_variant_subscriber:
    class: Drupal\display_variant_test\EventSubscriber\TestPageDisplayVariantSubscriber
    tags:
      - { name: 'event_subscriber', priority: 1000 }