handleForManager example

$this->entityManagerName = $entityManagerName;
    }

    final public function handle(Envelope $envelope, StackInterface $stack): Envelope
    {
        try {
            $entityManager = $this->managerRegistry->getManager($this->entityManagerName);
        } catch (\InvalidArgumentException $e) {
            throw new UnrecoverableMessageHandlingException($e->getMessage(), 0, $e);
        }

        return $this->handleForManager($entityManager, $envelope, $stack);
    }

    abstract protected function handleForManager(EntityManagerInterface $entityManager, Envelope $envelope, StackInterface $stack): Envelope;
}