if (states != null) {
            final long now = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
            states.entrySet().stream().filter(e -> (now - e.getValue().getExpiration()) / 1000L > getStateTtl()).map(Map.Entry::getKey)
                    .collect(Collectors.toList()).forEach(s -> {
                        if (logger.isDebugEnabled()) {

                        log.trace("Not found " + link);
                    }
                    break;
                }
            }
        }

        if ( dr != null && now > dr.getExpiration() ) {
            if ( log.isTraceEnabled() ) {
                log.trace("Expiring links " + link);
            }
            links.map.remove(link);
            dr = null;
        }

     * @return this session's UID
     */
    public int getUid () {
        return this.uid;
    }


    /**
     * @return this session's expiration time
     */
    public Long getExpiration () {
        return this.expiration > 0 ? this.expiration : null;
    }


    /**
     * @return this session's credentials
     */
    public CredentialsInternal getCredentials () {