title: Loading data into Ext.Data.TreeStore
body: <p>I am using ExtJs 4.1. We have one variable which contains data in JSON format. I want to load the value of that json into my Ext.Data.TreeStore. Usually store have loadData() which does the trick. But I do not see any such method for Ext.Data.TreeStore.</p>
  
  <p><strong>How can I load data into Ext.Data.TreeStore ?</strong></p>
  
  <p>Below is the definition of my store.</p>
  
  <pre><code>Ext.define('my.store.HStore', {
      extend: 'Ext.data.TreeStore',
      model: 'my.model.myModel',
      autoLoad: false,
      proxy: {
          type: 'memory',
          timeout: 90000,
          url: '/data/',
          reader: {
              type: 'json'
          }
      }
  });
  </code></pre>