private void returnClientToPool(final MemcachedClientIF clientFromPool) {
        try {
            if (clientFromPool != null) {
                this.connectionPool.returnObject(clientFromPool);
            }
        } catch (final Exception e) {
            LoggingUtils.error(LOGGER, e);
        }
    }
If not time out value is specified, expire the ticket immediately.

@param ticket the ticket
@return timeout in milliseconds.
support/cas-server-support-memcached-ticket-registry/src/main/java/org/apereo/cas/ticket/registry/MemcachedTicketRegistry.java