public void ToXElementDateTimeWithFormat()
        {
            var value = new DateTime(2012, 5, 13, 23, 14, 34);

            var candidate = value.ToXElement("Test", format: XmlExtensions.DateFormat);
            Assert.AreEqual("2012-05-13", candidate.Value);
        }
        public void ToXElementDateTime()
        {
            var value = new DateTime(2012, 5, 13, 23, 14, 34);

            var candidate = value.ToXElement("Test");
            Assert.AreEqual("2012-05-13T23:14:34Z", candidate.Value);
        }