@class NSString, NSFileManager, NSObject; @protocol OS_dispatch_queue; @interface SSPersistentCache : NSObject { BOOL _safeKeys; NSString *_identifier; NSString *_cacheName; NSString *_path; NSFileManager *_fm; NSObject<OS_dispatch_queue> *_serialQueue; } + (id)safeKeyForKey:(id)a0; - (BOOL)clear; - (BOOL)removeDataForKey:(id)a0; - (void)dealloc; - (BOOL)_isFileNotFound:(id)a0; - (id)description; - (BOOL)setData:(id)a0 forKey:(id)a1; - (id)initWithIdentifier:(id)a0 cacheName:(id)a1; - (id)_pathForKey:(id)a0; - (void)setFilenameSafeKeys:(BOOL)a0; - (id)dataForKey:(id)a0; @end