title: access to "data" jquery autocomplete
body: <p>i'm creating a tag system for my backend.
  all scripts (i'm using tagEditor) use jquery autocomplete to create an ajax suggest.</p>
  
  <p>something like this:</p>
  
  <pre><code>$("#post-tags").tagEditor({ 
      autocomplete: { 
          'source': '/ajax.cfm?action=tag.search', 
          minLength: 3,
          placeholder: 'Enter tags ...'
      }
  });
  </code></pre>
  
  <p>now, i would access to "data" option of my autocomplete.
  by docs, something like this (i need to use _renderItem method):</p>
  
  <pre><code>$("#post-tags").data( 'autocomplete' )._renderItem = function( ul, item )  {
      return $( "&lt;li&gt;&lt;/li&gt;" )
  }
  </code></pre>
  
  <p>how can i access to autocomplete data if widget is instantiated by another plugin?</p>
  
  <p>many thanks</p>