public void Read_XDataWrapper ()
		{
			var obj = new XDataWrapper () { Markup = new XData () {Text = "<my_xdata/>" } };
			var r = new XamlObjectReader (obj);
			while (!r.IsEof)
				r.Read ();
		}
		public void Read_XDataWrapper()
		{
			if (!Compat.IsPortableXaml)
				Assert.Ignore(".NET does not support this");
			var obj = new XDataWrapper() { Markup = new XData() { Text = "<my_xdata/>" } };
			var r = new XamlObjectReader(obj);
			while (!r.IsEof)
				r.Read();
		}