namespace My\Event;

use texdc\momento\AbstractEventHandler;
use texdc\momento\EventInterface;

final class Handler extends AbstractEventHandler
{
    protected static $validEventTypes = [
        FooEvent::TYPE,
        BarEvent::TYPE,
    ];
    
    public function __invoke(EventInterface $anEvent)
    {
        $type = $anEvent->eventType();
        $this->guardValidEventType($type);
        call_user_func([$this, $type], $anEvent);
    }
    
    // ...
}