title: SilverStripe: How do I insert a tab before another tab?
body: <p>I am trying to insert a new admin tab before Root.Content.Main without any luck. I've tried:</p>
  
  <pre><code>$fields-&gt;insertBefore(new Tab('Root.Content.Overview', 'Overview'), 'Root.Content.Main');
  </code></pre>
  
  <p>and</p>
  
  <pre><code>$fields-&gt;addFieldToTab('Root.Content', new Tab('OverviewTab', 'Root.Content.Overview'), 'Root.Content.Main');
  </code></pre>
  
  <p>without any luck.</p>
  
  <p>Anyone have any ideas? I've hunted through the API but there isn't much explanation as to how the tab naming system works.</p>