title: What does @interface DITableViewController (private) mean?
body: <p>I found the following method in iOS SDK sample code:</p>
  
  <pre><code>@interface DITableViewController (private)
  - (NSString *)applicationDocumentsDirectory;
  @end
  </code></pre>
  
  <p>What does (private) means? is it the new syntax for Objective-C 2.0 (developed by Apple)?</p>
  
  <p>Thanks in advance :-)</p>