title: Xamarin Forms: Multiple items for a converter
body: <p>I have a custom view which shows a "No Results" message when a page has no values.</p>
  
  <pre><code> &lt;common:NoResults 
      IsVisible="{Binding Details, 
      Converter={ StaticResource EmptyListIsTrueConverter }}"&gt;&lt;/common:NoResults&gt;
  </code></pre>
  
  <p>The problem is when the page is loading, there are no values so it shows and should not.</p>
  
  <p>Is there a way to combine a check for an empty list and another Model property like IsBusy into one Converter ?</p>