bool offsetExists(string $key) ArrayAccess has argument.

addListenerService(string $eventName, array $callback, int $priority) Adds a service as event listener

int|null getListenerPriority(string $eventName, callable $listener) Gets the listener priority

removeListener(string $eventName, callable $listener) Removes an event listener from the specified

addListener(string $eventName, callable $listener, int $priority) Adds an event listener that listens

offsetSet(string $key, mixed $value) ArrayAccess for argument setter.

array getListeners(string $eventName = null) Gets the listeners of a specific event or all listeners

removeSubscriber(

addSubscriberService(string $serviceId, string $class) Adds a service as event subscriber.

addSubscriber(