title: Is drag and drop supported by TreeItem?
body: <p>I'm currently working with a JavaFx-2's <a href="http://docs.oracle.com/javafx/2/api/javafx/scene/control/TreeView.html">TreeView</a> representing a file system. </p>
  
  <p>I want to enable <a href="http://docs.oracle.com/javafx/2/drag_drop/jfxpub-drag_drop.htm">drag and drop</a> to allow move operations, but it looks like <a href="http://docs.oracle.com/javafx/2/api/javafx/scene/control/TreeItem.html">TreeItem</a> doesn't include drag events listeners. I was only able to implement drag and drop on the englobing TreeView object, but it doesn't work for sub-items.</p>
  
  <p>Am I missing something, or are drag and drop events not supported for TreeItems yet?</p>