AthExUnittest → AthenaBaseComps Relation

File in Control/AthenaExamples/AthExUnittest	Includes file in Control/AthenaBaseComps
AthExUnittest / AthExUnittestTool.h	AthenaBaseComps / AthAlgTool.h
src / AthExUnittestAlg.h	AthenaBaseComps / AthAlgorithm.h