//                                                                     ===============
    @Override
    protected String getTimeAdjustTimeMillis() {
        return fessConfig.getTimeAdjustTimeMillis();
    }

    @Override
    protected Long getTimeAdjustTimeMillisAsLong() {
        return fessConfig.getTimeAdjustTimeMillisAsLong();
    }

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getTimeAdjustTimeMillis();

    /**
     * Get the value for the key 'time.adjust.time.millis' as {@link Long}. <br>
     * The value is, e.g. 0 <br>
     * comment: <br>