<?= "<?php\n" ?> namespace <?= $namespace; ?>; use Symfony\Component\Messenger\Envelope; use Symfony\Component\Messenger\Middleware\MiddlewareInterface; use Symfony\Component\Messenger\Middleware\StackInterface; final class <?= $class_name; ?> implements MiddlewareInterface { public function handle(Envelope $envelope, StackInterface $stack): Envelope { // ... return $stack->next()->handle($envelope, $stack); } }