title: How to merge two symfony forms in one refering to the same class
body: <p>In my project I am having 2 forms, one is <code>UserForm1.php</code> and the second is <code>UserForm2.php</code>. I would like to use both of these complexe forms without remaking them in a form type like <code>FullUserForm.php</code>.</p>
  
  <p>Has someone a tricks to do it ?</p>
  
  <p>I though about making the <code>FullUserFrom.php</code> with all fields and then use in the classes <code>UserForm1.php</code> and <code>UserForm2.php</code> with options but I would like to do it the other way.</p>
  
  <p>Thanks you in advance for your help !</p>