title: In C# what does Type<T> this [int index] means?
body: <p>I ran into this code today, and I cannot figure out it's meaning. I couldn't find an MSDN post about it </p>
  
  <pre><code>public interface ITestCase &lt;out Tview, out Tmodel&gt;
  where ... 
  where ...
  {
    ...
    IUITestCase&lt;Tview&gt; this[int index] {get;}
    ...
  }
  </code></pre>
  
  <p>The rest of the code seems useless for the question, but i'll post it if needed. 
   Has anybody an explanation for the property ? Thanks !</p>