setAttributeValue(result, fessConfig.getLdapAttrUidNumber(), o -> user.setUidNumber(DfTypeUtil.toLong(o)));
                setAttributeValue(result, fessConfig.getLdapAttrGidNumber(), o -> user.setGidNumber(DfTypeUtil.toLong(o)));
                setAttributeValue(result, fessConfig.getLdapAttrHomeDirectory(), o -> user.setHomeDirectory(o.toString()));
            }
        });

        final String value = getHttpFileuploadMaxSize();
        return value != null ? DfTypeUtil.toLong(value) : null;
    }

    String getHttpFileuploadThresholdSize();

    default Long getHttpFileuploadThresholdSizeAsLong() {
        final String value = getHttpFileuploadThresholdSize();
        return value != null ? DfTypeUtil.toLong(value) : null;
    }

    String getPasswordInvalidAdminPasswords();