computed_field-8.x-2.x-dev/modules/computed_field_ui/computed_field_ui.services.yml

services:
  computed_field_ui.route_subscriber:
    class: Drupal\computed_field_ui\Routing\ComputedFieldRouteSubscriber
    arguments: ['@entity_type.manager']
    tags:
      - { name: event_subscriber, priority: '0' }