title: How to use multiple routes and multiple param converter with Symfony
body: <p>Is it possible to use <strong>ParamConverter</strong> with different classes depending on the route being called ?
  Let's say I have a parent class <code>Food</code> with two children <code>Fruit</code> class and <code>Vegetable</code> class.</p>
  
  <p>I would like to be able to do something like this:</p>
  
  <pre><code>    /**
       *
       * @Route("fruit/{id}", name="fruit_show")
       * @ParamConverter("food", class="AppBundle:Fruit")
       * @Route("vegetable/{id}", name="vegetable_show")
       * @ParamConverter("food", class="AppBundle:Vegetable")
       */
       public function showAction(Food $food)
       { ... }
  </code></pre>