@class NSObject; @protocol OS_dispatch_source; @interface SYRetryTimer : NSObject { NSObject<OS_dispatch_source> *_timer; double _interval; double _backoffFactor; int _maxRetries; int _numRetries; } - (void).cxx_destruct; - (void)cancel; - (BOOL)incrementBackoff; - (id)initWithInterval:(double)a0 backoffFactor:(double)a1 maxRetries:(int)a2 queue:(id)a3 callout:(id /* block */)a4; @end