addPolyline method
Create polyline on List of points
(also clear all previous polyline)
Implementation
@override
addPolyline(List<LatLng> points) {
List<List<double>> pointsForMap = points.map((e) => [e.latitude, e.longitude]).toList();
NtkMapViewState.controller.runJavaScript("_createPolyline(${[pointsForMap]})");
}