public function sendDelayedMessage(string $message, int $delay = 0)
    {
        $delay = max(0, $delay);
        $delay = min(900, $delay);
        $this->sqsClient->sendMessage([
            'DelaySeconds' => $delay,
            'MessageBody'  => $message,
            'QueueUrl'     => $this->queueUrl,
        ]);
    }