title: Xamarin children add with multiple AbsoluteLayoutFlags
body: <p>I am wandering if its possible to add multiple AbsoluteLayoutFlags to a child? when doing it in c#?</p>
  
  <p>I know that it is possible in XAML:</p>
  
  <pre><code>StackLayout BackgroundColor="White"
              Orientation="Horizontal" 
              HorizontalOptions="FillAndExpand"
              AbsoluteLayout.LayoutBounds="0, 0, 1, 90"
              AbsoluteLayout.LayoutFlags="PositionProportional, WidthProportional"&gt;
  </code></pre>
  
  <p>But when I try to do this from c# I am apparently only able to add one:</p>
  
  <pre><code>layout.Children.Add(topMenu(), new Rectangle(0, 0, 1, 90), AbsoluteLayoutFlags.PositionProportional);
  </code></pre>
  
  <p>Hope to get help with this and thanks in advance :-)</p>