system_install() Implements

system_get_info($type, $name = NULL) Returns an array of information about enabled modules or themes.

system_preprocess_block(&$variables) Implements

Optional option on forms and settings File core/modules/system/

The cron service. Type:

The module handler. Type:

Builds a confirmation form to uninstall selected modules. Hierarchy class \Drupal\Core\Form\

Functions to run operations with elevated privileges via authorize.php. Because of the Update manager functionality included in Drupal core

Default theme implementation for the Appearance page. Available variables: attributes:

public DbUpdateController::requirements($severity