function ImmutableEventDispatcher::addSubscriber

Overrides EventDispatcherInterface::addSubscriber

File

vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php, line 36

Class

ImmutableEventDispatcher

A read-only proxy for an event dispatcher.

Namespace

Symfony\Component\EventDispatcher

Code

public function addSubscriber(EventSubscriberInterface $subscriber) : never {
    throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
}