}
        try {
            suggester.settings().array().delete(SuggestSettings.DefaultKeys.SUPPORTED_FIELDS);
            split(fessConfig.getSuggestFieldIndexContents(), ",").of(stream -> stream.filter(StringUtil::isNotBlank).forEach(field -> {
                try {
                    suggester.settings().array().add(SuggestSettings.DefaultKeys.SUPPORTED_FIELDS, field);

     * The value is, e.g. content,title <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getSuggestFieldIndexContents();

    /**
     * Get the value for the key 'suggest.update.request.interval'. <br>
     * The value is, e.g. 0 <br>