fessConfig.setFailureCountThreshold(form.failureCountThreshold);
        fessConfig.setWebApiPopularWord(isCheckboxEnabled(form.popularWord));
        fessConfig.setCsvFileEncoding(form.csvFileEncoding);
        fessConfig.setPurgeSearchLogDay(form.purgeSearchLogDay);
        fessConfig.setPurgeJobLogDay(form.purgeJobLogDay);
        fessConfig.setPurgeUserInfoDay(form.purgeUserInfoDay);

    }

    default boolean isWebApiPopularWord() {
        return getSystemPropertyAsBoolean(Constants.WEB_API_POPULAR_WORD_PROPERTY, true);
    }

    default void setCsvFileEncoding(final String value) {
        setSystemProperty(Constants.CSV_FILE_ENCODING_PROPERTY, value);
    }

    default String getCsvFileEncoding() {