@class NSUserDefaults, ERAttentionAwarenessClient; @interface EREyeReliefEngine : NSObject @property (retain) ERAttentionAwarenessClient *attentionAwarenessClient; @property float tooCloseCount; @property long long interventionType; @property (retain, nonatomic) NSUserDefaults *userDefaults; @property (nonatomic) long long tooCloseDistanceThreshold; + (float)_countReductionForInactiveTime:(double)a0 forSamplingInterval:(double)a1; - (BOOL)invalidateWithError:(id *)a0; - (void)takeDistanceSampleWithCompletion:(id /* block */)a0; - (id)init; - (void)_sendDistanceEvent:(id)a0; - (void)processInactivity:(double)a0 forSamplingInterval:(double)a1; - (void).cxx_destruct; - (void)processInterventionOutcome:(long long)a0; - (id)_initFromUserDefaults:(BOOL)a0; - (BOOL)cancelWithError:(id *)a0; - (void)_processDistanceEvent:(id)a0; @end