return list.toArray(new String[list.size()]);
    }

    String getQueryAdditionalFacetFields();

    default String[] getQueryAdditionalFacetFields(final String... fields) {
        final List<String> list = new ArrayList<>(fields.length + 10);
        stream(fields).of(stream -> stream.forEach(list::add));
        split(getQueryAdditionalFacetFields(), ",")