public static TextWriter _textWriter(this MessageJsonEncoderBase obj)
        {
            var fieldInfo = typeof(MessageJsonEncoderBase).GetField("_textWriter", BindingFlags.NonPublic | BindingFlags.Instance);

            return((TextWriter)fieldInfo.GetValue(obj));
        }
        public static MessageEncoderSettings _encoderSettings(this MessageJsonEncoderBase obj)
        {
            var fieldInfo = typeof(MessageJsonEncoderBase).GetField("_encoderSettings", BindingFlags.NonPublic | BindingFlags.Instance);

            return((MessageEncoderSettings)fieldInfo.GetValue(obj));
        }