replaceMarkers method
Clears all of the markers on the map, and adds given markers.
The returned Future completes after the change has been made on the platform side.
Implementation
Future<void> replaceMarkers(List<FlutterMarker> markers) async {
await channel.invokeMethod<void>('markers#replace', <String, dynamic>{
'markerList': markers.map((e) => e.serialize()).toList(),
});
}