title: retrieve additional informations about sonata image in twig
body: <p>I'm using SonataMediaBundle. Is it possible to retrieve additional informations about images in twig?</p>
  
  <p>This sentence retrieve image:</p>
  
  <pre><code>{% media item.image, 'big' %}
  </code></pre>
  
  <p>Can I retrieve for example author, description, copyright etc.? I can set this informations in SonataAdmin.</p>
  
  <p><strong>EDIT:</strong>
  I found solution: </p>
  
  <pre><code>{{item.image.description}}
  </code></pre>