title: calling sectionIndexTitlesForTableView
body: <p>Is it not possible to call this method from within a viewcontroller that is a subclass of UITableViewController?</p>
  
  <p>I am trying this:</p>
  
  <pre><code> NSString *key = [[self sectionIndexTitlesForTableView] objectAtIndex: section];
  </code></pre>
  
  <p>But I get compiler warnings stating the viewcontroller may not respond to this method? </p>