How to use image in IRandomAccessStreamReference for Shape.Fill
<p>I have an image stored as IRandomAccessStreamReference which I need to use as the fill in an Ellipse.  How would I go about using this?</p>

<pre><code>...
 static IRandomAccessStreamReference myThumbnail;
...
 var contactStore = await ContactManager.RequestStoreAsync();
 var contact = await contactStore.GetMeContactAsync();
 myThumbnail = contact.Thumbnail;
...
 Ellipse ellipse = new Ellipse
            {

                Height = 32,
                Width = 32,
                Fill = myThumbnail, // How do I use this?
             };
</code></pre>