EventDispatcherInterface

class \Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher implements \Symfony\Component\EventDispatcher\EventDispatcherInterface, \Symfony\Contracts\Service\ResetInterface
class \Symfony\Component\EventDispatcher\DependencyInjection\ExtractingEventDispatcher extends \Symfony\Component\EventDispatcher\EventDispatcher implements \Symfony\Component\EventDispatcher\EventSubscriberInterface
class \Symfony\Component\EventDispatcher\EventDispatcher implements \Symfony\Component\EventDispatcher\EventDispatcherInterface
class \Symfony\Component\EventDispatcher\ImmutableEventDispatcher implements \Symfony\Component\EventDispatcher\EventDispatcherInterface
class \Symfony\Component\HttpKernel\Debug\TraceableEventDispatcher extends \Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher