             return catalog!.marsphotos
         }
     }
-    
-    
 }
 
 extension Notification.Name {

extension MarsImageViewController: UIPopoverPresentationControllerDelegate {
    
}

    
    func setImageSelectionButtonWidth() {
        if let title = imageSelectionButton.title {
            imageSelectionButton.width = title.width(withConstrainedHeight: toolbar.frame.size.height, font: UIFont.systemFont(ofSize: 20))
        }
    }
    
