The app root. Type: string File core/modules/system

The dynamic router service. Type:

public FileSystemForm::__construct(ConfigFactoryInterface $config_factory

public FileSystemForm::submitForm(array &$form, FormStateInterface

Class to define the menu_link breadcrumb builder. Hierarchy class \Drupal\system\

Controller for Cron handling. Hierarchy class \Drupal\Core\Controller\

Provides module installation interface. The list of modules gets populated by module.info.yml files, which contain each module's name, description

The theme handler service. Type:

public ModulesUninstallConfirmForm

public ImageToolkitForm::buildForm(array $form, FormStateInterface