- (void)tableView:(UITableView *)aTableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle       forRowAtIndexPath:(NSIndexPath *)indexPath {  if (editingStyle == UITableViewCellEditingStyleDelete) {    NSDictionary *section = [data objectAtIndex:indexPath.section];    if (section) {      NSMutableArray *content = [section valueForKey:@"content"];      if (content && indexPath.row < [content count]) {        [content removeObjectAtIndex:indexPath.row];      }    }    [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];  }  else if (editingStyle == UITableViewCellEditingStyleInsert) {    NSDictionary *section = [data objectAtIndex:indexPath.section];    if (section) {      // Make a local reference to the editing view controller.      EditingViewController *controller = self.editingViewController;      NSMutableArray *content = [section valueForKey:@"content"];      // A "nil" editingItem indicates the editor should create a new item.      controller.editingItem = nil;      // The group to which the new item should be added.      controller.editingContent = content;      controller.sectionName = [section valueForKey:@"name"];      controller.editingTypes = [section valueForKey:@"types"];      [self.navigationController pushViewController:controller animated:YES];    }  }}