class MyGrpcClient extends GrpcClient {
MyGrpcClient() : super('Summator');
Future<double> getData(
String? correlationId, double value1, double value2) async {
var request = command.Number1(value1: value1, value2: value2);
var response = await call<command.Number1, command.Number2>(
'sum', correlationId, request);
return response.writeToJsonMap().values.toList()[0];
}
}