system.services.yml

services:
  access_check.cron:
    class: Drupal\system\Access\CronAccessCheck
    tags:
      - { name: access_check }
  system.manager:
    class: Drupal\system\SystemManager
    arguments: ['@module_handler', '@database', '@entity.manager']
  system.breadcrumb.legacy:
    class: Drupal\system\LegacyBreadcrumbBuilder
    tags:
      - {name: breadcrumb_builder, priority: 500}
  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 }