title: Converting QVariant to a QStringList
body: <p>I have stored <code>QStringList</code> in a <code>QVariant</code> variable while calling <code>setData</code> function. Now I'd like to restore this data from <code>QVariant</code> variable. How to do it?  </p>
  
  <p>Edit:
  I tried convert but I don't seem to understand how it works.</p>