}

    public PopularWordsRequestBuilder addLanguage(final String lang) {
        request.addLanguage(lang);
        return this;
    }

    public PopularWordsRequestBuilder setSeed(final String seed) {
        request.setSeed(seed);
        return this;
    }

    public PopularWordsRequestBuilder setWindowSize(final int windowSize) {
        request.setWindowSize(windowSize);
        return this;
    }

                                .setQueryFreqThreshold(fessConfig.getSuggestPopularWordQueryFreqAsInteger());
                popularWordsRequestBuilder.setSeed(baseSeed);
                stream(baseTags).of(stream -> stream.forEach(tag -> popularWordsRequestBuilder.addTag(tag)));
                stream(baseRoles).of(stream -> stream.forEach(role -> popularWordsRequestBuilder.addRole(role)));

    public void setIndex(final String index) {
        this.index = index;
    }

    public void setSize(final int size) {
        this.size = size;
    }

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

    public void setWindowSize(final int windowSize) {
        this.windowSize = windowSize;
    }

    public void addTag(final String tag) {