public void Base64Member() { var message = new MessageWithBase64EncodedString(); message.LastName = "andrew"; MessagePart part = GetMessagePart(message.GetType(), "nameBytes"); Assert.AreEqual("YW5kcmV3", part.GetValue(message)); part.SetValue(message, "YXJub3R0"); Assert.AreEqual("arnott", message.LastName); }