cms_content_sync-3.0.x-dev/modules/cms_content_sync_draggableviews/cms_content_sync_draggableviews.services.yml

services:
  cms_content_sync_draggableviews.event_subscriber:
    class: Drupal\cms_content_sync_draggableviews\EventSubscriber\DraggableViewsSyncExtend
    tags:
      - {name: event_subscriber}
    arguments: ['@entity_type.manager']