public void TestBuiltinException()
{
var serializer = new ProtobufSerializer(null);
var exception = new ArgumentException("Test");
var obj = new ResponseMessage { Exception = exception };
var bytes = serializer.ToBinary(obj);
var obj2 = (ResponseMessage)serializer.FromBinary(bytes, null);
Assert.Equal(obj.Exception.GetType(), obj2.Exception.GetType());
}