final String[] fields, final String[] excludes) {
        final String baseSeed = seed != null ? seed : fessConfig.getSuggestPopularWordSeed();
        final String[] baseTags = tags != null ? tags : fessConfig.getSuggestPopularWordTagsAsArray();
        final String[] baseRoles = roles != null ? roles
                : ComponentUtil.getRoleQueryHelper()
                        .build(searchRequestType)
                        .stream()

                    public String getSuggestPopularWordSeed() {
                        return "default_seed";
                    }

                    @Override
                    public String[] getSuggestPopularWordTagsAsArray() {
                        return new String[] { "tag1", "tag2" };
                    }

                    @Override
                    public String[] getSuggestPopularWordFieldsAsArray() {

    }

    String getSuggestPopularWordTags();

    default String[] getSuggestPopularWordTagsAsArray() {
        return split(getSuggestPopularWordTags(), "\n").get(stream -> stream.filter(StringUtil::isNotBlank).toArray(n -> new String[n]));
    }

    String getSuggestPopularWordExcludes();