requestPayment method
Implementation
@override
Future<PaymentResponse> requestPayment(PaymentRequest request) async {
// var resp =
// await methodChannel.invokeMethod('requestPayment', request.toMap());
// PaymentResponse response = PaymentResponse.fromJson(resp);
// return response;
var response =
await methodChannel.invokeMethod('requestPayment', request.toMap());
PaymentResponse paymentStatus = PaymentResponse.fromJson(response);
return paymentStatus;
}