services:
  theme.negotiator.block.admin_demo:
    class: Drupal\block\Theme\AdminDemoNegotiator
    tags:
      - { name: theme_negotiator, priority: 1000 }
  block.page_display_variant_subscriber:
    class: Drupal\block\EventSubscriber\BlockPageDisplayVariantSubscriber
    tags:
      - { name: event_subscriber }
  block.repository:
    class: Drupal\block\BlockRepository
    arguments: ['@entity.manager', '@theme.manager', '@context.handler']