@class NSURL, NSUUID, NSData; @interface _NSDataFileBackedFuture : NSData <_NSFileBackedFuture, NSSecureCoding> { NSURL *_fileURL; NSURL *_originalFileURL; NSData *_realData; NSData *_bytes; } @property (class, readonly) BOOL supportsSecureCoding; @property (readonly) NSURL *fileURL; @property (readonly) unsigned long long fileSize; @property (readonly) NSUUID *UUID; + (Class)classForKeyedUnarchiver; - (id)initWithStoreMetadata:(id)a0 directory:(id)a1; - (unsigned long long)hash; - (void)dealloc; - (unsigned long long)length; - (unsigned long long)_bytesLengthForStore; - (void)encodeWithCoder:(id)a0; - (const void *)bytes; - (Class)classForCoder; - (id)description; - (void)_moveToPermanentLocation; - (BOOL)_isCloudKitSupportOriginated; - (void)_copyToInterimLocation; - (void *)_bytesPtrForStore; - (BOOL)isEqual:(id)a0; - (id)initWithCoder:(id)a0; - (id)initWithStoreMetadata:(id)a0 directory:(id)a1 originalFileURL:(id)a2; @end