GNNVertexFitter → DetectorDescription Relation

File in Reconstruction/VKalVrt/GNNVertexFitter	Includes file in DetectorDescription
GNNVertexFitter / GNNVertexFitterTool.h	GeoPrimitives / GeoPrimitives / GeoPrimitives.h
Root / GNNVertexFitterTool.cxx	GeoPrimitives / GeoPrimitives / GeoPrimitivesHelpers.h