private void updateTooltip(MouseEvent e) {
MapInstance map = mapValues.mapInstance.getValue();
if (map == null) return;
Location nearestNeighbor = map.nearestNeighbor(e.x, e.y);
boolean noName = map.isEmpty() || !map.containsPoint(e.x, e.y) || nearestNeighbor == null;
String name = noName ? null : nearestNeighbor.getName();
textUpdater.updateNearestNeighbor(name);
}
@Override