serializeFeature method
Serialize to a geojson feature string
Implementation
String serializeFeature(Map<String, dynamic>? properties) {
final geoSeries = <GeoSerie?>[];
for (final line in lines!) {
geoSeries.add(line.geoSerie);
}
return _buildGeoJsonFeature(
geoSeries, "Line", properties ?? <String, dynamic>{"name": name});
}