Popping to a specific viewcontroller in a navigation stack

Question

I have a come across a piece of code to pop to a specific viewcontroller in a navigation stack as below

for (UIViewController* viewController in self.navigationC         


        

Answer 1

for (int m=0; m<[self.navigationController.viewControllers count]; m++)   
{  

        if([[self.navigationController.viewControllers objectAtIndex:m] isKindOfClass:[MyGroupViewController class]])  
            { 

                MyGroupViewController * groupViewController = [self.navigationController.viewControllers    objectAtIndex:m];  
                [self.navigationController popToViewController:groupViewController animated:YES];   
             }   
}