title: Vaadin 8: Grid cell tooltip example
body: <p>I would like to have tooltips in a Vaadin 8 grid cell. I think this can be implemented with setDescriptionGenerator. I tried to use it as</p>
  
  <pre><code>grid.addColumn(Property::getStringValue).setDescriptionGenerator(Property::getDescription);
  </code></pre>
  
  <p>But this does not do anything. I am looking for a code example to implement tooltips in Vaadin 8 grid.
  Thank you for your help!</p>