How to use

toString

method

in

org.jivesoftware.smackx.pubsub.NotificationType

/**
 * Sets the NotificationType for the node.
 *
 * @param notificationType The enum representing the possible options
 * @since 4.3
 */
public void setNotificationType(NotificationType notificationType) {
  addField(ConfigureNodeFields.notification_type, FormField.Type.list_single);
  setAnswer(ConfigureNodeFields.notification_type.getFieldName(), getListSingle(notificationType.toString()));
}