} catch (final Throwable t) {
            logger.warn("Failed to set SessionTrackingMode.", t);
        }

        split(fessConfig.getQueryFacetQueries(), "\n").of(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).forEach(s -> {
            final String[] values = StringUtils.split(s, ":", 2);
            if (values.length != 2) {
                return;

     *  <br>
     * comment: Facet queries definition.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getQueryFacetQueries();

    /**
     * Get the value for the key 'rank.fusion.window_size'. <br>
     * The value is, e.g. 200 <br>
     * comment: Window size for rank fusion.