System/Library/PrivateFrameworks/HealthDaemon.framework

HDConceptQueryServer.h

NSObject
>
HDQueryServer

@interface HDConceptQueryServer : HDQueryServer

+ (Class)queryClass;

- (id)initWithUUID:(id)a0 configuration:(id)a1 client:(id)a2 delegate:(id)a3;
- (void)_queue_start;

@end