assertEquals("{errors.front_prefix}", FessMessages.ERRORS_front_prefix);
        assertEquals("{errors.front_suffix}", FessMessages.ERRORS_front_suffix);
        assertEquals("{errors.header}", FessMessages.ERRORS_HEADER);
        assertEquals("{errors.footer}", FessMessages.ERRORS_FOOTER);
        assertEquals("{errors.prefix}", FessMessages.ERRORS_PREFIX);
        assertEquals("{errors.suffix}", FessMessages.ERRORS_SUFFIX);

        // Setup - test with different message codes
        final String message = "Query validation error";
        final VaMessenger<FessMessages> unknownErrorCode =
                messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);
        final VaMessenger<FessMessages> parseErrorCode =
                messages -> messages.addErrorsInvalidQueryParseError(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute

        // Setup - test with different message codes
        final String message = "Test message";
        final VaMessenger<FessMessages> loginErrorCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);
        final VaMessenger<FessMessages> logoutErrorCode = messages -> messages.addSuccessSsoLogout(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute

     * @return concatenated string of localized validation messages separated by spaces
     */
    protected String getMessage(final VaMessenger<FessMessages> validationMessagesLambda) {
        final FessMessages messages = new FessMessages();
        validationMessagesLambda.message(messages);
        return messageManager.toMessageList(request.getLocale() == null ? Locale.ENGLISH : request.getLocale(), messages)

         * @return This ApiErrorResponse instance.
         */
        public ApiErrorResponse message(final VaMessenger<FessMessages> validationMessagesLambda) {
            final FessMessages messages = new FessMessages();
            validationMessagesLambda.message(messages);
            message = ComponentUtil.getMessageManager()

import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.app.web.base.FessAdminAction;
import org.codelibs.fess.app.web.base.login.FessLoginAssist;
import org.codelibs.fess.mylasta.action.FessMessages;
import org.codelibs.fess.opensearch.user.exentity.User;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.RenderDataUtil;
import org.dbflute.optional.OptionalEntity;

import org.codelibs.fess.app.service.GroupService;
import org.codelibs.fess.app.web.CrudMode;
import org.codelibs.fess.app.web.base.FessAdminAction;
import org.codelibs.fess.mylasta.action.FessMessages;
import org.codelibs.fess.opensearch.user.exentity.Group;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.RenderDataUtil;
import org.dbflute.optional.OptionalEntity;

import org.codelibs.fess.helper.QueryHelper;
import org.codelibs.fess.helper.SearchHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.action.FessMessages;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.RenderDataUtil;

     * @param runtimeGroups   The runtime groups.
     * @return A new action validator.
     */
    public ActionValidator<FessMessages> createValidator(final RequestManager requestManager,
            final UserMessagesCreator<FessMessages> messagesCreator, final Class<?>[] runtimeGroups) {
        return new FessActionValidator<>(requestManager, messagesCreator, runtimeGroups);
    }

    /**