title: Vaadin: Use custom Converter for ListSelect
body: <p>Is it possible to use a custom Converter for the ListSelect Component?
  This is what I tried:</p>
  
  <pre><code>ListSelect ls = new ListSelect();
  ls.setConverter((Converter) new MyCustomConverter());
  
  ObjectToDisplay ots = new ObjectToDisplay();
  
  // ls.setConvertedValue(ots ); // Converter is called but ListSelect stays empty 
  lsConstruction.addItem(ots ); // Did not work
  </code></pre>
  
  <p>However, the ListSelect stays empty after adding a value. </p>
  
  <p>Thanks for any help!</p>