public DefaultUserNotification(final String title, final String content) {
   if (StringUtils.isNotBlank(title) && StringUtils.isNotBlank(content)) {
     notification = new NotificationMetaData(NotifMessageType.NORMAL.getId(), title, content);
   } else {
     notification = new NotificationMetaData();
   }
 }
 public DefaultUserNotification(
     final String title, final Map<String, SilverpeasTemplate> templates, final String content) {
   notification =
       new NotificationMetaData(NotifMessageType.NORMAL.getId(), title, templates, content);
 }