assertTrue(messages.hasMessageOf(property));
    }

    @Test
    public void test_addErrorsFrontPrefix() {
        String property = "testProperty";
        FessMessages result = messages.addErrorsFrontPrefix(property);
        assertNotNull(result);
        assertSame(messages, result);
        assertTrue(messages.hasMessageOf(property));
    }

    @Test

     * @param messages the messages to set
     */
    public void setMessages(final List<ChatMessage> messages) {
        synchronized (messagesLock) {
            if (messages == null) {
                this.messages = null;
            } else if (messages instanceof CopyOnWriteArrayList) {
                this.messages = messages;
            } else {
                this.messages = new CopyOnWriteArrayList<>(messages);
            }

        validate(form, messages -> {}, this::asEditHtml);
        verifyToken(this::asEditHtml);
        createStopwordsItem(form, this::asEditHtml).ifPresent(entity -> {
            stopwordsService.store(form.dictId, entity);
            saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));

                logger.warn("Failed to process a request.", e);
                throwValidationError(messages -> messages.addErrorsFailedToUploadMappingFile(GLOBAL),
                        () -> redirectWith(getClass(), moreUrl("uploadpage/" + form.dictId)));
            }
            saveInfo(messages -> messages.addSuccessUploadMappingFile(GLOBAL));

            saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
        } catch (final Exception e) {
            logger.warn("Failed to create user: username={}, error={}", body.name, e.getMessage(), e);
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)));
        }

        body.dictId = dictId;
        validateApi(body, messages -> {});
        body.crudMode = CrudMode.CREATE;
        final KuromojiItem entity = createKuromojiItem(this, body, () -> {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));
            return null;
        }).orElseGet(() -> {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));

        body.dictId = dictId;
        validateApi(body, messages -> {});
        body.crudMode = CrudMode.CREATE;
        final ProtwordsItem entity = createProtwordsItem(this, body, () -> {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));
            return null;
        }).orElseGet(() -> {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));

        try {
            userService.changePassword(username, form.password);
            saveInfo(messages -> messages.addSuccessChangedPassword(GLOBAL));
        } catch (final Exception e) {
            logger.warn("Failed to change password for user: username={}, error={}", username, e.getMessage(), e);
            throwValidationError(messages -> messages.addErrorsFailedToChangePassword(GLOBAL), toIndexPage);
        }

                logger.info("Created user: {}", entity.getName());
                saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
            } catch (final Exception e) {
                logger.warn("Failed to create user: {}", form.name, e);
                throwValidationError(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)),
                        this::asEditHtml);

        body.dictId = dictId;
        validateApi(body, messages -> {});
        body.crudMode = CrudMode.CREATE;
        final StopwordsItem entity = createStopwordsItem(body, () -> {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));
            return null;
        }).orElseGet(() -> {
            throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));