@class NSObject, VSSpeechEngine, VSVoiceResourceAsset; @protocol OS_dispatch_queue; @interface VSPrewarmService : NSObject @property (retain, nonatomic) VSSpeechEngine *cachedEngine; @property (retain, nonatomic) VSVoiceResourceAsset *loadedResources; @property (retain, nonatomic) NSObject<OS_dispatch_queue> *prewarmQueue; @property (nonatomic) long long activeSessionCount; + (id)sharedService; - (id)init; - (void).cxx_destruct; - (id)cachedEngineForVoice:(id)a0 resources:(id)a1; - (id)_cachedEngineForVoice:(id)a0 resources:(id)a1; - (id)_engineForVoice:(id)a0 resources:(id)a1; - (void)_loadVoiceResources:(id)a0 forEngine:(id)a1; - (void)handleVoiceSelectionPurge:(id)a0; - (id)loadEngineForVoice:(id)a0 resources:(id)a1; - (void)prewarmWithRequest:(id)a0; - (void)unloadCachedEngineWithVoice:(id)a0; - (void)unloadEngine; - (void)waitUntilPrewarmFinish; @end