public void handleNotify( String event, Map<String,Object> properties ) {
if( EVENT_LOCATION_UPDATE_EVENT.equals( event ) ) {
Position position = getPosition( properties );
notifyListenersWithPosition( position );
} else if( EVENT_LOCATION_UPDATE_ERROR_EVENT.equals( event ) ) {
PositionError error = getPositionError( properties );
notifyListenersWithError( error );
}
}