title: API REST Yammer: cant retrieve admins from a group
body: <p>using the REST API i did that with the JavaScript SDK :</p>
  
  <pre><code>yam.platform.request({
      url: "users/in_group/2490226",
      method: "GET",
  });
  </code></pre>
  
  <p>I retrieved users but I can't see which one is an admin</p>
  
  <p>Can I retrive the admins of a group using the REST API?</p>