HLT::MET::PeriodicGridBase Node1 HLT::MET::PeriodicGridBase + PeriodicGridBase() + PeriodicGridBase() + getIndex() + getEtaIndex() + getPhiIndex() + globalIndex() + etaPhiIndex() + centralEta() + centralPhi() + parameters() and 9 more... Node2 HLT::MET::GridParameters + maxEta + nEtaTowers + nPhiTowers + displaceEta + displacePhi + operator!=() + operator==() + displacement() Node2->Node1 -m_params