*
     * @return The current time.
     */
    public Date getCurrentTime() {
        return new Date(getCurrentTimeAsLong());
    }

    /**
     * Gets the current time in milliseconds.
     *
     * @return The current time in milliseconds.
     */
    public long getCurrentTimeAsLong() {
        return System.currentTimeMillis();
    }

    /**

            final long tokenExpiryTime = authResult.expiresOnDate().getTime(); // milliseconds since epoch
            final long currentTime = ComponentUtil.getSystemHelper().getCurrentTimeAsLong(); // milliseconds since epoch
            if (tokenExpiryTime < currentTime) {
                if (logger.isDebugEnabled()) {

    protected void waitForYellowStatus(final FessConfig fessConfig) {
        Exception cause = null;
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final long startTime = systemHelper.getCurrentTimeAsLong();
        for (int i = 0; i < maxEsStatusRetry; i++) {
            try {
                final ClusterHealthResponse response = client.admin()
                        .cluster()

            stateMap = new HashMap<>();
            session.setAttribute(STATES, stateMap);
        }
        final StateData stateData = new StateData(nonce, ComponentUtil.getSystemHelper().getCurrentTimeAsLong());
        if (logger.isDebugEnabled()) {
            logger.debug("store {} in session", stateData);
        }
        stateMap.put(state, stateData);
    }

    /**