MaterialMapping → Common Relation

File in acts/blob/sPHENIX/Examples/Run/MaterialMapping	Includes file in acts/blob/sPHENIX/Examples/Run/Common
DD4hep / DD4hepMaterialMapping.cpp	include / ActsExamples / MaterialMapping / MaterialMappingBase.hpp
DD4hep / DD4hepMaterialValidation.cpp	include / ActsExamples / MaterialMapping / MaterialValidationBase.hpp
GenericMaterialMapping.cpp	include / ActsExamples / MaterialMapping / MaterialMappingBase.hpp
GenericMaterialValidation.cpp	include / ActsExamples / MaterialMapping / MaterialValidationBase.hpp
TGeo / TGeoMaterialMapping.cpp	include / ActsExamples / MaterialMapping / MaterialMappingBase.hpp
TGeo / TGeoMaterialValidation.cpp	include / ActsExamples / MaterialMapping / MaterialValidationBase.hpp