 class AccountTableViewDataSource: NSObject, UITableViewDataSource, NSFetchedResultsControllerDelegate {
     
     let tableView:UITableView
-    
-
     
     // Set up fetchedresultscontroller and perform fetch
     var fetchedResultsController: NSFetchedResultsController {

        let mailBox: POSMailbox = self.fetchedResultsController.objectAtIndexPath(indexPath) as POSMailbox
        cell.textLabel?.text = mailBox.name
    }

    // MARK: - NSFetchedResultsControllerDelegate
    
    func controllerWillChangeContent(controller: NSFetchedResultsController) {

            return self._fetchedResultsController!
        }
    }
    
    // fetchedResultController set property
    var _fetchedResultsController:NSFetchedResultsController?

