public virtual object WriteSampleObjectUsingFormatter(MediaTypeFormatter formatter, object value, Type type, MediaTypeHeaderValue mediaType)
        {
            if (formatter == null)
            {
                throw new ArgumentNullException("formatter");
            }
            if (mediaType == null)
            {
                throw new ArgumentNullException("mediaType");
            }

            object sample = String.Empty;
            MemoryStream ms = null;
            HttpContent content = null;
            try
            {
                if (formatter.CanWriteType(type))
                {
                    ms = new MemoryStream();
                    content = new ObjectContent(type, value, formatter, mediaType);
                    formatter.WriteToStreamAsync(type, value, ms, content, null).Wait();
                    ms.Position = 0;
                    StreamReader reader = new StreamReader(ms);
                    string serializedSampleString = reader.ReadToEnd();
                    if (mediaType.MediaType.ToUpperInvariant().Contains("XML"))
                    {
                        serializedSampleString = TryFormatXml(serializedSampleString);
                    }
                    else if (mediaType.MediaType.ToUpperInvariant().Contains("JSON"))
                    {
                        serializedSampleString = TryFormatJson(serializedSampleString);
                    }

                    sample = new TextSample(serializedSampleString);
                }
                else
                {
                    sample = new InvalidSample(String.Format(
                        CultureInfo.CurrentCulture,
                        "Failed to generate the sample for media type '{0}'. Cannot use formatter '{1}' to write type '{2}'.",
                        mediaType,
                        formatter.GetType().Name,
                        type.Name));
                }
            }
            catch (Exception e)
            {
                sample = new InvalidSample(String.Format(
                    CultureInfo.CurrentCulture,
                    "An exception has occurred while using the formatter '{0}' to generate sample for media type '{1}'. Exception message: {2}",
                    formatter.GetType().Name,
                    mediaType.MediaType,
                    UnwrapException(e).Message));
            }
            finally
            {
                if (ms != null)
                {
                    ms.Dispose();
                }
                if (content != null)
                {
                    content.Dispose();
                }
            }

            return sample;
        }
        public override bool Equals(object obj)
        {
            InvalidSample other = obj as InvalidSample;

            return(other != null && ErrorMessage == other.ErrorMessage);
        }