@class NSObject; @protocol OS_dispatch_source, OS_dispatch_queue, WFTimerHandler; @interface WFTimer : NSObject @property (retain, nonatomic) NSObject<OS_dispatch_source> *timeoutTimer; @property (retain, nonatomic) NSObject<OS_dispatch_queue> *timerQueue; @property (readonly, weak, nonatomic) id<WFTimerHandler> handler; @property (readonly, nonatomic) double duration; - (void)start; - (void).cxx_destruct; - (void)restart; - (void)cancel; - (id)initWithHandler:(id)a0 duration:(double)a1; - (BOOL)shouldHaveTimeout; @end