field_ui.services.yml

services:
  field_ui.subscriber:
    class: Drupal\field_ui\Routing\RouteSubscriber
    arguments: ['@entity_type.manager']
    tags:
      - { name: event_subscriber }
  field_ui.route_enhancer:
    alias: route_enhancer.entity_bundle
    deprecated: The "%alias_id%" service is deprecated in drupal:9.4.0 and is removed from drupal:10.0.0. Use the "route_enhancer.entity_bundle" service instead. See https://www.drupal.org/node/3245017
    class: Drupal\Core\Entity\Enhancer\EntityBundleRouteEnhancer
    arguments: ['@entity_type.manager']
    tags:
      - { name: route_enhancer }
  access_check.field_ui.view_mode:
    class: Drupal\field_ui\Access\ViewModeAccessCheck
    arguments: ['@entity_type.manager']
    tags:
      - { name: access_check, applies_to: _field_ui_view_mode_access }
  access_check.field_ui.form_mode:
    class: Drupal\field_ui\Access\FormModeAccessCheck
    arguments: ['@entity_type.manager']
    tags:
      - { name: access_check, applies_to: _field_ui_form_mode_access }