question: private long renewServiceLeaseDo ( ServiceID serviceID , Uuid leaseID , long renewDuration ) throws UnknownLeaseException { long now = System . currentTimeMillis ( ) ; long renewExpiration = renewServiceLeaseInt ( serviceID , leaseID , renewDuration , now ) ; addLogRecord ( new ServiceLeaseRenewedLogObj ( serviceID , leaseID , renewExpiration ) ) ; return renewExpiration - now ; }
target:  The code that does the real work of renewServiceLease.