@interface _UIFeedbackDummyEngine : _UIFeedbackEngine <_UIFeedbackPlayer_Internal> @property (copy, nonatomic) id /* block */ invalidationBlock; + (BOOL)_supportsPlayingIndividualFeedback:(id)a0; + (id)sharedEngine; - (id)_stats_key; - (void)_playFeedback:(id)a0 atTime:(double)a1; - (void)_internal_dequeueReusableFeedbackPlayerWithCompletionBlock:(id /* block */)a0; - (void).cxx_destruct; - (void)_internal_stopFeedbackData:(id)a0 forFeedback:(id)a1; - (BOOL)_internal_playFeedbackData:(id)a0 forFeedback:(id)a1 atTime:(double)a2; - (void)_stopFeedback:(id)a0; - (void)_updateValueForParameters:(id)a0 withKey:(id)a1; - (void)_internal_activateUnderlyingPlayerWithCompletion:(id /* block */)a0; @end