drupal/core/modules/language/language.services.yml

services:
  plugin.manager.language_negotiation_method:
    class: Drupal\language\LanguageNegotiationMethodManager
    arguments: ['@container.namespaces', '@cache.discovery', '@module_handler']
  language_negotiator:
    class: Drupal\language\LanguageNegotiator
    arguments: ['@language_manager', '@plugin.manager.language_negotiation_method', '@config.factory', '@settings', '@request_stack']
    calls:
      - [initLanguageManager]
  language.config_subscriber:
    class: Drupal\language\EventSubscriber\ConfigSubscriber
    arguments: ['@language_manager', '@language.default']
    tags:
      - { name: event_subscriber }
  language.config_factory_override:
    class: Drupal\language\Config\LanguageConfigFactoryOverride
    arguments: ['@config.storage', '@event_dispatcher', '@config.typed']
    tags:
      - { name: config.factory.override, priority: -254 }
      - { name: event_subscriber }
  language_converter:
    class: Drupal\language\LanguageConverter
    arguments: ['@language_manager']
    tags:
      - { name: paramconverter }