@class _TtC11ActivityKit28ActivityQoSObservationClient;

@interface ACActivityQoSListener : NSObject

@property (retain, nonatomic) _TtC11ActivityKit28ActivityQoSObservationClient *client;

- (id)init;
- (void).cxx_destruct;
- (id)listenForActivityQoS:(id)a0 withHandler:(id /* block */)a1;

@end