Introduce stub for EventDispatcherInterface

Author: mitelg

extension.neon

@@ -12,6 +12,7 @@ parameters:
 		- stubs/Symfony/Component/Form/ChoiceList/Loader/ChoiceLoaderInterface.stub
 		- stubs/Symfony/Component/DependencyInjection/ContainerBuilder.stub
 		- stubs/Symfony/Component/DependencyInjection/Extension/ExtensionInterface.stub
+		- stubs/Symfony/Component/EventDispatcher/EventDispatcherInterface.stub
 		- stubs/Symfony/Component/EventDispatcher/EventSubscriberInterface.stub
 		- stubs/Symfony/Component/EventDispatcher/GenericEvent.stub
 		- stubs/Symfony/Component/Form/FormBuilderInterface.stub

stubs/Symfony/Component/EventDispatcher/EventDispatcherInterface.stub

@@ -0,0 +1,14 @@
+<?php
+
+namespace Symfony\Contracts\EventDispatcher;
+
+interface EventDispatcherInterface
+{
+    /**
+     * @template TEvent of object
+     * @param TEvent $event
+     *
+     * @return TEvent
+     */
+    public function dispatch(object $event, string $eventName = null): object;
+}