* @param throwError consumer to handle validation errors
     */
    public static void validateFields(final Map<String, Object> doc, final Consumer<VaMessenger<FessMessages>> throwError) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        try {
            if (!fessConfig.validateIndexRequiredFields(doc)) {

     * @param attributes the attributes to validate
     * @param throwError the error handler
     */
    public static void validateAttributes(final Map<String, String> attributes, final Consumer<VaMessenger<FessMessages>> throwError) {
        ComponentUtil.getLdapManager()
                .validateGroupAttributes(Long.class, attributes,

     * @param throwError callback to report any validation errors
     */
    public static void validateAttributes(final Map<String, String> attributes, final Consumer<VaMessenger<FessMessages>> throwError) {
        ComponentUtil.getLdapManager()
                .validateUserAttributes(Long.class, attributes,