Core minimum schema version. File core/lib/Drupal.php, line 94 Contains

public static Drupal::config($name) Retrieves a configuration

public static Drupal::httpClient() Returns the default

The current system version. File core/lib/Drupal.php, line 84 Contains

public static Drupal::lock() Returns the locking layer

public static Drupal::theme() Gets the theme service

public static Drupal::entityQuery($entity_type, $conjunction = 'AND')

public static Drupal::keyValueExpirable($collection) Returns

Core API compatibility. File core/lib/Drupal.php, line 89 Contains

public static Drupal::token() Returns the token service