if (numberOfActivities > 0)
{
lastSeenId = activity.getPagedSet().get(numberOfActivities - 1).getId();
}
MessageStreamUpdateEvent updateEvent = new MessageStreamUpdateEvent(activity);
updateEvent.setMoreResults(activity.getTotal() > activity.getPagedSet().size());
error.setText("");
error.setVisible(false);
eventBus.notifyObservers(updateEvent);
stream.setVisible(true);