}

        @Override
        public String getLdapAttrDepartmentNumber() {
            return "departmentNumber";
        }

        @Override
        public String getLdapAttrPreferredLanguage() {
            return "preferredLanguage";
        }

        @Override
        public String getLdapAttrDisplayName() {
            return "displayName";
        }

        @Override

     * comment: LDAP attribute for preferred language.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getLdapAttrPreferredLanguage();

    /**
     * Get the value for the key 'ldap.attr.departmentNumber'. <br>
     * The value is, e.g. departmentNumber <br>
     * comment: LDAP attribute for department number.