@class FCFileCoordinatedTodayPrivateDataTransactionQueue, NSString, FCFileCoordinatedTodayDropbox; @interface FCWritablePrivateDataStorage : NSObject <FCWritablePrivateDataStorage> @property (retain, nonatomic) FCFileCoordinatedTodayDropbox *dropbox; @property (retain, nonatomic) FCFileCoordinatedTodayPrivateDataTransactionQueue *transactionQueue; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (id)init; - (void)writeReadHistoryItem:(id)a0 withCompletion:(id /* block */)a1; - (id)initWithDropbox:(id)a0 transactionQueue:(id)a1; - (void).cxx_destruct; - (void)writeSeenHistoryItems:(id)a0 withCompletion:(id /* block */)a1; @end