title: What function is called when a Nib is unloaded?
body: <p>I understand that when a Nib file is loaded into a window/view, it will call <code>awakeFromNib()</code> method.</p>
  
  <p>My question is what function will be called when a Nib is about to be unloaded?</p>
  
  <p>Thanks.</p>
  
  <p>A</p>