MuonML::LayerSpBucket Node1 MuonML::LayerSpBucket - m_nMdtLay - m_nStripLay - m_min - m_max + LayerSpBucket() + nMdtLayers() + nStripLayers() + layerNum() + coveredMax() + coveredMin() Node2 std::vector< T >     Node2->Node1 Node3 T     Node3->Node2 +elements Node4 std::vector< uint8_t > + elements   Node4->Node1 -m_layNum