title: Enable tooltip for properties view table entries
body: <p>I have the default PropertySheet and it works well, but I would like to add a tooltip for each cell.</p>
  
  <p>Has I just want to add the tooltip, I don't think I would need to override a lot of stuff. Just extend the actual view, get the TableViewer and apply the tooltip.</p>
  
  <p>So I created a new class:</p>
  
  <pre><code>public class RunnerPropertyView extends PropertySheet {
  
      @Override
      public void createPartControl(Composite parent) {
          super.createPartControl(parent);
          //TODO: get the existing TableViewer
          // apply the tooltip
  
      }
  
  }
  </code></pre>
  
  <p>To apply the tooltip, I think I can follow <a href="https://stackoverflow.com/a/29646868/1204249">this approach</a>.</p>
  
  <p>My question is how can I get the existing TableViewer from the <code>parent</code> object or from the PropertySheet itself (<code>this</code>).</p>
  
  <p>Is it that possible? In my understanding it should be. The TableViewer instance must be there somewhere. Just have to know the methods and/or casts to do...</p>