Mark all dispatched event classes as final

Author: Tobion

Event/AuthenticationFailureEvent.php

@@ -18,6 +18,8 @@
  * This event is dispatched on authentication failure.
  *
  * @author Johannes M. Schmitt <[email protected]>
+ *
+ * @final since Symfony 4.4
  */
 class AuthenticationFailureEvent extends AuthenticationEvent
 {

Event/AuthenticationSuccessEvent.php

@@ -11,6 +11,9 @@
 
 namespace Symfony\Component\Security\Core\Event;
 
+/**
+ * @final since Symfony 4.4
+ */
 class AuthenticationSuccessEvent extends AuthenticationEvent
 {
 }

Event/VoteEvent.php

@@ -21,7 +21,7 @@
  *
  * @internal
  */
-class VoteEvent extends Event
+final class VoteEvent extends Event
 {
     private $voter;
     private $subject;