@class NSURL, NSString; @interface BDSReadingHistoryMigrationInfo : NSObject @property (class, readonly, nonatomic) NSURL *readingHistoryFileURL; @property (class, readonly, nonatomic) NSString *booksFinishedUserDefaultsKey; @property (class, readonly, nonatomic) NSString *streakDayUserDefaultsKey; @property (class, readonly, nonatomic) NSString *dataHasBeenMovedUserDefaultsKey; + (id)description; @end