project method
Implementation
CustomPoint project(LatLng? latlng, [double? zoom]) {
  zoom ??= _zoom;
  return options.crs.latLngToPoint(latlng, zoom);
}CustomPoint project(LatLng? latlng, [double? zoom]) {
  zoom ??= _zoom;
  return options.crs.latLngToPoint(latlng, zoom);
}