Trk::LayerMaterialMap Node1 Trk::LayerMaterialMap - m_elementTable + LayerMaterialMap() + LayerMaterialMap() + LayerMaterialMap() + operator=() + ~LayerMaterialMap() + elementTable() + updateElementTable() + synchronizeElementTable() Node2 std::map< Trk::LayerIndex, const Trk::LayerMaterialProperties * > + keys + elements Node2->Node1