DiscSurfaceCnv_p1 Node1 DiscSurfaceCnv_p1 Node2 BoundSurfaceCnv_p1 < Trk::DiscSurface, DiscBoundsCnv_p1 > - m_surfaceCnv - m_boundsCnv + BoundSurfaceCnv_p1() + persToTrans() + transToPers() Node2->Node1