/// <summary>
 /// Signs out from current login so switching samples can trigger credential challenge.
 /// </summary>
 private void MyMapView_LayerUnloaded(object sender, LayerUnloadedEventArgs e)
 {
     if (!(e.Layer is FeatureLayer))
     {
         return;
     }
     SignOut();
 }
		/// <summary>
		/// Signs out from current login so switching samples can trigger credential challenge.
		/// </summary>
		private void MyMapView_LayerUnloaded(object sender, LayerUnloadedEventArgs e)
		{
			if (!(e.Layer is FeatureLayer))
				return;
			SignOut();
		}