title: In using NSFetchedResultsController, Is it possible to combine attributes from coredata in the header
body: <p>I am using NSFetchedResultsController with a UITableViewController. The sections are delineated based on</p>
  
  <p><code>fetchedResultsController = NSFetchedResultsController(fetchRequest: noteRequest, managedObjectContext: moc, sectionNameKeyPath: #keyPath(Note.id), cacheName: nil)</code></p>
  
  <p>Is there a way I can combine the attribute Note.id with another attribute (Note.date) without creating a new attribute?</p>