System/Library/Frameworks/MediaPlayer.framework

MPVolumeViewController.h

NSObject
>
UIResponder
>
UIViewController

@class MPVolumeView;

@interface MPVolumeViewController : UIViewController

@property (readonly, nonatomic) MPVolumeView *volumeView;

- (id)init;
- (void)viewDidLoad;
- (void).cxx_destruct;
- (struct CGSize { double x0; double x1; })preferredContentSize;

@end