move method
Implementation
void move(Key key, LatLng to, {bool merge = false}) {
final before = findByKey(key);
if (before == null) {
debugPrint(
'Warning: Attempted to move non-existent marker with key: $key');
return;
}
perform(MoveMarkerOp(key: key, from: before.point, to: to), merge: merge);
final after = findByKey(key);
if (after != null) {
_options.onSpatialUpdate?.call(after, before);
}
scheduleAutoSave();
}