.stream()
                        .filter(StringUtil::isNotBlank)
                        .toArray(n -> new String[n]);
        final String[] baseFields = fields != null ? fields : fessConfig.getSuggestPopularWordFieldsAsArray();
        final String[] baseExcludes = excludes != null ? excludes : fessConfig.getSuggestPopularWordExcludesAsArray();
        try {

                        return new String[] { "tag1", "tag2" };
                    }

                    @Override
                    public String[] getSuggestPopularWordFieldsAsArray() {
                        return new String[] { "field1", "field2" };
                    }

                    @Override
                    public String[] getSuggestPopularWordExcludesAsArray() {

        params.put(name, new Tuple3<>(fieldName, mappingType, dateFormat));
    }

    String getSuggestPopularWordFields();

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

    String getSuggestPopularWordTags();