ExtractingEventDispatcher example

$container->getDefinition($id)->addTag('container.hot_path');
                } elseif (isset($this->noPreloadEvents[$event['event']])) {
                    ++$noPreload;
                }
            }

            if ($noPreload && \count($events) === $noPreload) {
                $container->getDefinition($id)->addTag('container.no_preload');
            }
        }

        $extractingDispatcher = new ExtractingEventDispatcher();

        foreach ($container->findTaggedServiceIds('kernel.event_subscriber', true) as $id => $tags) {
            $def = $container->getDefinition($id);

            // We must assume that the class value has been correctly filled, even if the service is created by a factory             $class = $def->getClass();

            if (!$r = $container->getReflectionClass($class)) {
                throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
            }
            if (!$r->isSubclassOf(EventSubscriberInterface::class)) {
                

$container->getDefinition($id)->addTag('container.hot_path');
                } elseif (isset($this->noPreloadEvents[$event['event']])) {
                    ++$noPreload;
                }
            }

            if ($noPreload && \count($events) === $noPreload) {
                $container->getDefinition($id)->addTag('container.no_preload');
            }
        }

        $extractingDispatcher = new ExtractingEventDispatcher();

        foreach ($container->findTaggedServiceIds('kernel.event_subscriber', true) as $id => $tags) {
            $def = $container->getDefinition($id);

            // We must assume that the class value has been correctly filled, even if the service is created by a factory             $class = $def->getClass();

            if (!$r = $container->getReflectionClass($class)) {
                throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
            }
            if (!$r->isSubclassOf(EventSubscriberInterface::class)) {