drupal/core/modules/system/system.services.yml

services:
  access_check.cron:
    class: Drupal\system\Access\CronAccessCheck
    tags:
      - { name: access_check, applies_to: _access_system_cron }
  system.manager:
    class: Drupal\system\SystemManager
    arguments: ['@module_handler', '@database', '@entity.manager']
    calls:
      - [setRequest, ['@?request=']]
  system.breadcrumb.default:
    class: Drupal\system\PathBasedBreadcrumbBuilder
    arguments: ['@request', '@entity.manager', '@access_manager', '@router', '@path_processor_manager', '@config.factory',  '@title_resolver']
    tags:
      - { name: breadcrumb_builder, priority: 0 }
  path_processor.files:
    class: Drupal\system\PathProcessor\PathProcessorFiles
    tags:
      - { name: path_processor_inbound, priority: 200 }
  theme.negotiator.system.batch:
    class: Drupal\system\Theme\BatchNegotiator
    arguments: ['@batch.storage']
    tags:
      - { name: theme_negotiator, priority: 1000 }
  system.config_subscriber:
    class: Drupal\system\SystemConfigSubscriber
    tags:
      - { name: event_subscriber }