MuonGMR4::TgcReadoutElement::parameterBook Node1 MuonGMR4::TgcReadoutElement ::parameterBook + halfThickness + halfHeight + halfWidthShort + halfWidthLong + nGasGaps + sensorLayouts + layerBounds Node2 MuonGMR4::TgcReadoutElement ::defineArgs Node1->Node2