iOS chained table view row animation part 2

gistfile1.m

- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Start a new core animation transaction
    [CATransaction begin];
    
    // Set a completion block for the animation
    [CATransaction setCompletionBlock:^{
        
        // Update the data model to add a new section
        [_data addObject:[NSMutableArray arrayWithObjects:@"Black", nil]];
        
        // Animate the new section apperance
        [tableView beginUpdates];
        [tableView insertSections:[NSIndexSet indexSetWithIndex:indexPath.section + 1] withRowAnimation:UITableViewRowAnimationFade];
        [tableView endUpdates];
        
    }];
    
    
    // Update the data model and remove the the selected row
    [(NSMutableArray*)_data[indexPath.section] removeObjectAtIndex:indexPath.row];

    // Animate the removal of the selected row
    [tableView beginUpdates];
    [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationLeft];
    [tableView endUpdates];

    [CATransaction commit];
}