.popularWords()
                        .setSize(fessConfig.getSuggestPopularWordSizeAsInteger())
                        .setWindowSize(fessConfig.getSuggestPopularWordWindowSizeAsInteger())
                        .setQueryFreqThreshold(fessConfig.getSuggestPopularWordQueryFreqAsInteger());
                popularWordsRequestBuilder.setSeed(baseSeed);

    public void setSeed(final String seed) {
        this.seed = seed;
    }

    /**
     * Sets the window size for rescoring.
     * @param windowSize The window size.
     */
    public void setWindowSize(final int windowSize) {
        this.windowSize = windowSize;
    }

    /**
     * Adds a tag to filter by.
     * @param tag The tag.
     */
    public void addTag(final String tag) {