Objective-C version of the receipt attributes validation. Header file

ReceiptAttributesValidation.h

@import Foundation;

#import "ReceiptValidation.h"

@protocol ReceiptAttributes;

NS_ASSUME_NONNULL_BEGIN

@interface ReceiptAttributesValidation : NSObject <ReceiptValidation>
- (instancetype)initWithOrigin:(id<ReceiptValidation>)origin attributes:(id<ReceiptAttributes>)attributes NS_DESIGNATED_INITIALIZER;
- (instancetype)init NS_UNAVAILABLE;
@end

@protocol ReceiptAttributes <NSObject>
@property(readonly) NSString *identifier;
@property(readonly) NSString *version;
@property(readonly) NSData *guid;
@end

NS_ASSUME_NONNULL_END