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();

     * The value is, e.g.  <br>
     * comment: Fields for popular word suggestion.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getSuggestPopularWordFields();

    /**
     * Get the value for the key 'suggest.popular.word.fields' as {@link Integer}. <br>
     * The value is, e.g.  <br>
     * comment: Fields for popular word suggestion.