MuonGMR4::RpcReadoutElement::defineArgs Node1 MuonGMR4::RpcReadoutElement ::defineArgs Node2 MuonGMR4::MuonReadoutElement ::defineArgs + physVol + alignTransform + chambDesign + detElId Node2->Node1 Node3 MuonGMR4::RpcReadoutElement ::parameterBook + halfLength + halfThickness + halfWidth + nGasGaps + nPanelsInPhi + layers + phiDesign + etaDesign + layerBounds Node3->Node1