createWithAttributes example

/** @var DelayStamp|null $delayStamp */
        $delayStamp = $envelope->last(DelayStamp::class);
        $delay = $delayStamp ? $delayStamp->getDelay() : 0;

        /** @var AmqpStamp|null $amqpStamp */
        $amqpStamp = $envelope->last(AmqpStamp::class);
        if (isset($encodedMessage['headers']['Content-Type'])) {
            $contentType = $encodedMessage['headers']['Content-Type'];
            unset($encodedMessage['headers']['Content-Type']);

            if (!$amqpStamp || !isset($amqpStamp->getAttributes()['content_type'])) {
                $amqpStamp = AmqpStamp::createWithAttributes(['content_type' => $contentType], $amqpStamp);
            }
        }

        $amqpReceivedStamp = $envelope->last(AmqpReceivedStamp::class);
        if ($amqpReceivedStamp instanceof AmqpReceivedStamp) {
            $amqpStamp = AmqpStamp::createFromAmqpEnvelope(
                $amqpReceivedStamp->getAmqpEnvelope(),
                $amqpStamp,
                $envelope->last(RedeliveryStamp::class) ? $amqpReceivedStamp->getQueueName() : null
            );
        }