Commaaa2

vendor/symfony/event-dispatcher-contracts/EventDispatcherInterface.php

@@ -21,11 +21,13 @@ interface EventDispatcherInterface extends PsrEventDispatcherInterface
     /**
      * Dispatches an event to all registered listeners.
      *
-     * @param object      $event     The event to pass to the event handlers/listeners
+     * @template T of object
+     *
+     * @param T           $event     The event to pass to the event handlers/listeners
      * @param string|null $eventName The name of the event to dispatch. If not supplied,
      *                               the class of $event should be used instead.
      *
-     * @return object The passed $event MUST be returned
+     * @return T The passed $event MUST be returned
      */
-    public function dispatch(object $event, string $eventName = null): object;
+    public function dispatch(object $event, ?string $eventName = null): object;
 }