public void XmlOutputTest()
        {
            var et = new EmailMessage();

            string attachmentFile = DocumentSamples.GetSampleCsv();
            string textbody = DocumentSamples.GetSampleEmailText();
            string htmlbody = DocumentSamples.GetSampleEmailHtml();

            et.EmailTo = "*****@*****.**";
            et.EmailSubject = "PostAPIClient Refactor Test (ET)";
            et.EmailReplyTo = "*****@*****.**";
            et.EmailFrom = "*****@*****.**";
            et.DisplayName = "JThomas from AlertSolutions";
            et.Attachments = new List<Attachment>() { Attachment.FromText("Attachment.txt",attachmentFile) };
            et.TextBody = TextBody.FromText(textbody);
            et.HtmlBody = HtmlBody.FromText(htmlbody);
            Assert.IsNotNull(et);
            Assert.IsNotNull(et.EmailTo);
            Assert.IsNotNull(et.ToXml());
        }