INavigable4Momentum Node1 INavigable4Momentum   + ~INavigable4Momentum() Node2 IAthenaBarCode + UNDEFINEDBARCODE + UNDEFINEDVERSION + IAthenaBarCode() + ~IAthenaBarCode() + getAthenaBarCode() + setAthenaBarCode() + hasSameAthenaBarCode() + hasSameAthenaBarCodeExcept Version() + getVersion() + newVersion() + setVersion() Node2->Node1 Node3 INavigable   + ~INavigable() + fillToken() + fillToken() Node3->Node1 Node4 I4Momentum   + ~I4Momentum() + px() + py() + pz() + m() + m2() + p() + p2() + eta() + rapidity() and 18 more... Node4->Node1