/**
  * Registers an onCoreException listener.
  *
  * @param EventDispatcher $dispatcher An EventDispatcher instance
  * @param integer         $priority   The priority
  */
 public function register(EventDispatcherInterface $dispatcher)
 {
     $dispatcher->addListener(Events::onCoreException, $this);
 }
 /**
  * @param string $eventClassName
  * @param callable $callback
  */
 public function addListener($eventClassName, callable $callback)
 {
     $this->eventDispatcher->addListener($eventClassName, $callback);
 }