code: @Override
      public void sendAttributeChangeNotification(String msg, String attributeName, String attributeType,
                                                  Object oldValue, Object newValue) {
          LOGGER.debug("Sending Notification " + (attrNotificationSeq + 1) + ":" + msg + ":"
                  + attributeName + ":" + attributeType + ":" + oldValue.toString() + ":" + newValue.toString());
  
          Notification n = new AttributeChangeNotification(this, attrNotificationSeq++, System.currentTimeMillis(), msg,
                  attributeName, attributeType, oldValue, newValue);
          sendNotification(n);
          LOGGER.debug("Notification Sent " + attrNotificationSeq);
      }
docs: Sends a notification to registered clients about the change in value of
  an attribute.
  
  @param msg           A String containing the message of the notification.
  @param attributeName A String giving the name of the attribute.
  @param attributeType A String containing the type of the attribute.
  @param oldValue      An object representing value of the attribute before the
  change.
  @param newValue      An object representing value of the attribute after the
  change.