title: NetBeans Platform - listen for changes to BeanNode<T>s in a PropertySheetView
body: <p>I'm trying to intercept an event when a user makes a change to a property sheet (view).</p>
  
  <p>I have tried adding <code>PropertyChangeListeners</code> and <code>NodeListeners</code> to the node, neither of which fires an event when the node is changed. Also, I tried adding a <code>PropertyChangeListener</code> to the <code>PropertySheetView</code> itself, but no dice.</p>
  
  <p>Any ideas what I'm missing?</p>