Get any outstanding Notifications and return them.
final Map<String,Object> result =
mProxy.getBufferNotifications( mBufferID, mNextSequenceNumber);
final Long nextSequenceNumber = (Long)
result.get( mProxy.NEXT_SEQUENCE_NUMBER_KEY );
mNextSequenceNumber = nextSequenceNumber.longValue();
final Notification[] notifs =
(Notification[])result.get( mProxy.NOTIFICATIONS_KEY );
return( notifs );