labels.page_not_found_title=Pagina non trovata.
labels.check_url=Controlla l'URL.
labels.busy_title=Servizio temporaneamente non disponibile
labels.busy_message=Il server sta attualmente riscontrando un carico elevato. Riprova più tardi.
labels.user_name=Nome utente
labels.login=Accedi
labels.login.placeholder_username=Nome utente
labels.login.placeholder_password=Password
labels.login.title=Accedi
labels.index_label=Etichetta

labels.busy_title=Service Temporarily Unavailable
labels.busy_message=The server is currently experiencing high load. Please try again later.
labels.user_name=Username
labels.login=Login
labels.login.placeholder_username=Username
labels.login.placeholder_password=Password
labels.login.title=Login
labels.index_label=Label
labels.index_lang=Preferred Language
labels.index_sort=Sort
labels.index_num=Display Count

labels.page_not_found_title=Página não encontrada.
labels.check_url=Verifique a URL.
labels.busy_title=Serviço temporariamente indisponível
labels.busy_message=O servidor está com carga alta no momento. Tente novamente mais tarde.
labels.user_name=Nome de usuário
labels.login=Login
labels.login.placeholder_username=Nome de usuário
labels.login.placeholder_password=Senha
labels.login.title=Login
labels.index_label=Rótulo

labels.page_not_found_title=Pagina niet gevonden.
labels.check_url=Controleer de URL.
labels.busy_title=Service tijdelijk niet beschikbaar
labels.busy_message=De server is momenteel zwaar belast. Probeer het later opnieuw.
labels.user_name=Gebruikersnaam
labels.login=Inloggen
labels.login.placeholder_username=Gebruikersnaam
labels.login.placeholder_password=Wachtwoord
labels.login.title=Inloggen
labels.index_label=Label

labels.busy_title=Service Temporarily Unavailable
labels.busy_message=The server is currently experiencing high load. Please try again later.
labels.user_name=Username
labels.login=Login
labels.login.placeholder_username=Username
labels.login.placeholder_password=Password
labels.login.title=Login
labels.index_label=Label
labels.index_lang=Preferred Language
labels.index_sort=Sort
labels.index_num=Display Count

labels.busy_title=Layanan Tidak Tersedia Sementara
labels.busy_message=Server sedang mengalami beban tinggi. Silakan coba lagi nanti.
labels.user_name=Nama Pengguna
labels.login=Masuk
labels.login.placeholder_username=Nama Pengguna
labels.login.placeholder_password=Kata Sandi
labels.login.title=Masuk
labels.index_label=Label
labels.index_lang=Bahasa Pilihan
labels.index_sort=Sortir
labels.index_num=Jumlah Tampilan

labels.page_not_found_title=Página no encontrada.
labels.check_url=Por favor, compruebe la URL.
labels.busy_title=Servicio temporalmente no disponible
labels.busy_message=El servidor está experimentando una carga alta. Por favor, inténtelo de nuevo más tarde.
labels.user_name=Nombre de usuario
labels.login=Iniciar sesión
labels.login.placeholder_username=Nombre de usuario
labels.login.placeholder_password=Contraseña

labels.busy_message=Сервер в настоящее время испытывает высокую нагрузку. Пожалуйста, повторите попытку позже.
labels.user_name=Имя пользователя
labels.login=Вход
labels.login.placeholder_username=Имя пользователя
labels.login.placeholder_password=Пароль
labels.login.title=Вход
labels.index_label=Метка
labels.index_lang=Предпочитаемый язык
labels.index_sort=Сортировка
labels.index_num=Количество отображаемых

labels.busy_message=Le serveur est actuellement en forte charge. Veuillez réessayer plus tard.
labels.user_name=Nom d'utilisateur
labels.login=Connexion
labels.login.placeholder_username=Nom d'utilisateur
labels.login.placeholder_password=Mot de passe
labels.login.title=Connexion
labels.index_label=Étiquette
labels.index_lang=Langue préférée
labels.index_sort=Trier
labels.index_num=Nombre d'affichages

     */
    public OptionalEntity<FessUser> login(final String username, final String password) {
        // Add defensive null/blank checks
        if (StringUtil.isBlank(username) || StringUtil.isBlank(password)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Login failed: username or password is blank");
            }
            return OptionalEntity.empty();