Guessed implementation of the `-[UIStoryboardSegueTemplate _perform:]`

UIStoryboardSegueTemplate.m

- (void)_perform:(id)sender {
	NSString *identifier = self.destinationViewControllerIdentifier;
	UIViewController *sourceViewController = self.viewController;
	UIStoryboard *storyboard = sourceViewController.storyboard;
	UIViewController *destinationViewController = [storyboard instantiateViewControllerWithIdentifier:identifier];
	UIStoryboardSegue *segue = [self segueWithDestinationViewController:destinationViewController];
	[sourceViewController prepareForSegue:segue
                                       sender:destinationViewController];
	[segue perform];
}