@class NSMutableDictionary, NSObject; @protocol OS_dispatch_queue; @interface _LTTextToSpeechCache : NSObject { NSObject<OS_dispatch_queue> *_cacheQueue; NSMutableDictionary *_cache; } - (void)clear; - (id)init; - (id)audioDataForKey:(id)a0; - (void).cxx_destruct; - (void)cacheAudioData:(id)a0 forKey:(id)a1; @end