PileUpTools → AthenaBaseComps Relation

File in Control/PileUpTools/PileUpTools	Includes file in Control/AthenaBaseComps
PileUpMergeSvc.h	AthenaBaseComps / AthService.h
PileUpStream.h	AthenaBaseComps / AthMessaging.h
PileUpToolBase.h	AthenaBaseComps / AthAlgTool.h