VxMultiVertex → Event Relation

File in Tracking/TrkEvent/VxMultiVertex/VxMultiVertex	Includes file in Event
MvfFitInfo.h	xAOD / xAODTracking / xAODTracking / Event/xAOD/xAODTracking/xAODTracking/Vertex.h
TrackToVtxLink.h	xAOD / xAODTracking / xAODTracking / Event/xAOD/xAODTracking/xAODTracking/Vertex.h