TrigL2MuonSA::RpcLayerClusters Node1 TrigL2MuonSA::RpcLayerClusters + clear() Node2 std::vector< std::vector < double > > + elements Node2->Node1 +clusters_in_layer _Z +clusters_in_layer_R Node3 std::vector< std::list < double > > Node3->Node1 +clusters_in_layer _phi +clusters_in_layer_eta Node4 std::list< double > + elements Node4->Node3 +elements