@class NSObject; @protocol OS_dispatch_queue; @interface CHCWorkloop : NSObject @property (class, readonly, nonatomic) NSObject<OS_dispatch_queue> *sharedDaemonWorkloop; + (id)serialQueueTargetingSharedWorkloop:(id)a0; + (id)serialQueueTargetingSharedWorkloop:(id)a0 withQoS:(unsigned int)a1; @end