@Override
    public Long getTimeToLive() {
        return this.timeToKillInSeconds;
    }
Ticket expiration policy based on a hard timeout from ticket creation time rather than the
"idle" timeout provided by {@link TimeoutExpirationPolicy}.

@author Andrew Feller
@since 3.1.2
core/cas-server-core-tickets-api/src/main/java/org/apereo/cas/ticket/expiration/HardTimeoutExpirationPolicy.java