aprato

#ifndef NS_DESIGNATED_INITIALIZER
#if __has_attribute(objc_designated_initializer)
#define NS_DESIGNATED_INITIALIZER __attribute((objc_designated_initializer))
#else
#define NS_DESIGNATED_INITIALIZER
#endif
#endif

aprato

// .h

@interface AMPNavigationBar : UINavigationBar

@property (nonatomic, assign) CGFloat extraColorLayerOpacity UI_APPEARANCE_SELECTOR;

@end

// .m