Trk::BoundSurface_p1 Node1 Trk::BoundSurface_p1 + BoundSurface_p1() Node2 Trk::Surface_p1 + m_associatedDetElementId + Surface_p1() Node2->Node1 Node3 std::vector< double > + elements Node3->Node2 +m_transform Node4 TPObjRef # m_index + TPObjRef() + TPObjRef() + isNull() + typeID() + topLevelCnvID() + index() Node4->Node1 +m_bounds Node5 TPObjRef::typeID_t + m_TLCnvID + m_cnvID + typeID_t() + topLevelCnvID() + cnvID() + value() + isNull() Node5->Node4 #m_typeID