serializePolylineSet function
Converts a Set of Polylines into something serializable in JSON.
Implementation
List<Map<String, dynamic>> serializePolylineSet(Set<Polyline> polylines) {
if (polylines == null) {
return null;
}
return polylines
.map<Map<String, dynamic>>((Polyline p) => p.toJson())
.toList();
}