Expanded class hierarchy of Fast404ExceptionHtmlSubscriber in Zircon Profile 8.0
- class \Drupal\Core\EventSubscriber\HttpExceptionSubscriberBase implements EventSubscriberInterface
- class \Drupal\Core\EventSubscriber\DefaultExceptionHtmlSubscriber
- class \Drupal\Core\EventSubscriber\ExceptionJsonSubscriber
- class \Drupal\Core\EventSubscriber\ExceptionTestSiteSubscriber
- class \Drupal\Core\EventSubscriber\Fast404ExceptionHtmlSubscriber