@class BKFaceDetectOperation; @protocol BKFaceDetectOperationDelegate; @interface _LABKFaceDetectOperation : _LABKPresenceDetectOperation @property (readonly, nonatomic) BKFaceDetectOperation *_BKFaceDetectOperation; @property (weak, nonatomic) id<BKFaceDetectOperationDelegate> delegate; - (id)delegate; - (void)operation:(id)a0 faceDetectStateChanged:(id)a1; @end