addLine method
Adds a line to the map, configured using the specified custom options
.
Change listeners are notified once the line has been added on the platform side.
The returned Future completes with the added line once listeners have been notified.
Implementation
Future<Line> addLine(LineOptions options, [Map? data]) async {
final effectiveOptions = LineOptions.defaultOptions.copyWith(options);
final line = Line(getRandomString(), effectiveOptions, data);
await lineManager!.add(line);
notifyListeners();
return line;
}