Final Class Yiisoft\Queue\Message\JsonMessageSerializer

                public function serialize(MessageInterface $message): string
{
    $payload = [
        'name' => $message->getHandlerName(),
        'data' => $message->getData(),
        'meta' => $message->getMetadata(),
    ];
    if (!isset($payload['meta']['message-class'])) {
        $payload['meta']['message-class'] = $message instanceof EnvelopeInterface
            ? $message->getMessage()::class
            : $message::class;
    }
    return json_encode($payload, JSON_THROW_ON_ERROR);
}

            

                public function unserialize(string $value): MessageInterface
{
    $payload = json_decode($value, true, 512, JSON_THROW_ON_ERROR);
    if (!is_array($payload)) {
        throw new InvalidArgumentException('Payload must be array. Got ' . get_debug_type($payload) . '.');
    }
    $name = $payload['name'] ?? null;
    if (!isset($name) || !is_string($name)) {
        throw new InvalidArgumentException('Handler name must be a string. Got ' . get_debug_type($name) . '.');
    }
    $meta = $payload['meta'] ?? [];
    if (!is_array($meta)) {
        throw new InvalidArgumentException('Metadata must be an array. Got ' . get_debug_type($meta) . '.');
    }
    $envelopes = [];
    if (isset($meta[EnvelopeInterface::ENVELOPE_STACK_KEY]) && is_array($meta[EnvelopeInterface::ENVELOPE_STACK_KEY])) {
        $envelopes = $meta[EnvelopeInterface::ENVELOPE_STACK_KEY];
    }
    $meta[EnvelopeInterface::ENVELOPE_STACK_KEY] = [];
    $class = $payload['meta']['message-class'] ?? Message::class;
    // Don't check subclasses when it's a default class: that's faster
    if ($class !== Message::class && !is_subclass_of($class, MessageInterface::class)) {
        $class = Message::class;
    }
    /**
     * @var class-string<MessageInterface> $class
     */
    $message = $class::fromData($name, $payload['data'] ?? null, $meta);
    foreach ($envelopes as $envelope) {
        if (is_string($envelope) && class_exists($envelope) && is_subclass_of($envelope, EnvelopeInterface::class)) {
            $message = $envelope::fromMessage($message);
        }
    }
    return $message;
}