@class NSString, NSArray;
@interface AVMetadataGroup : NSObject
@property (readonly, nonatomic) NSString *classifyingLabel;
@property (readonly, nonatomic) NSString *uniqueID;
@property (readonly, copy, nonatomic) NSArray *items;
+ (void)initialize;
- (struct opaqueCMFormatDescription { } *)copyFormatDescription;
@end