OEModule\PatientTicketing\services\PatientTicketing_QueueService::canDeleteQueue PHP Method

    public function canDeleteQueue($queue_id)
    {
        if ($this->getCurrentTicketCount($queue_id)) {
            return false;
        }
        $queue = $this->readModel($queue_id);
        foreach ($queue->getDependentQueueIds() as $dep_id) {
            if ($this->getCurrentTicketCount($dep_id)) {
                return false;
            }
        }
        return true;
    }