public function send($exchangeName, $notificationMessage, $notificationType, $notificationId, \DateTime $notificationOccurredOn)
{
$this->channel($exchangeName)->basic_publish(new AMQPMessage($notificationMessage, ['type' => $notificationType, 'timestamp' => $notificationOccurredOn->getTimestamp(), 'message_id' => $notificationId]), $exchangeName);
}