title: Hiding a node in ExtJs 4.1 TreePanel
body: <p>How can we hide some of the nodes in ExtJs 4.1 TreePanel based on some condition?
  We can hide node in ExtJs 3.4 by doing this:</p>
  
  <pre><code>tree.getRootNode().cascade(function() { // descends into child nodes
      if(this.attributes['status'] == 100) { // test this node
          this.getUI().hide() // hide this node
      }
  })
  </code></pre>
  
  <p>But this method is no longer supported in ExtJs 4.1.</p>