code: public static List<PushedNotification> findSuccessfulNotifications(List<PushedNotification> notifications) {
  		List<PushedNotification> filteredList = new Vector<PushedNotification>();
  		for (PushedNotification notification : notifications) {
  			if (notification.isSuccessful()) filteredList.add(notification);
  		}
  		return filteredList;
  	}
docs: Filters a list of pushed notifications and returns only the ones that were successful.
  
  @param notifications a list of pushed notifications
  @return a filtered list containing only notifications that were succcessful