startServer method
Implementation
@override
Future<String> startServer(String name, SdrArguments sdrArguments) async {
Map map = {};
map["frequencyHz"] = sdrArguments.frequencyHz;
map["gain"] = sdrArguments.gain;
map["ppm"] = sdrArguments.ppm;
map["samplerateHz"] = sdrArguments.samplerateHz;
return await methodChannel.invokeMethod("startServer", [name, map]);
}