@Override
public ExpirationType renew(UUID uuid, ExpirationType requestedExpiration) {
SubscriptionTicket ticket = getDatabase().findById(uuid);
if (ticket == null) {
throw new UnknownSubscription();
}
LOG.info("[subscription=" + ticket.getUuid() + "] Requested renew expiration: "
+ requestedExpiration.getValue());
LOG.fine("[subscription=" + ticket.getUuid() + "] Current expiration: " + ticket.getExpires().toXMLFormat());
ExpirationType response = new ExpirationType();