IParticle Node1 IParticle   + ~IParticle() + dataType() + origin() + originLink() + hasCharge() + charge() + hasPdgId() + pdgId() Node2 INavigable4Momentum   + ~INavigable4Momentum() Node2->Node1 Node3 IAthenaBarCode + UNDEFINEDBARCODE + UNDEFINEDVERSION + IAthenaBarCode() + ~IAthenaBarCode() + getAthenaBarCode() + setAthenaBarCode() + hasSameAthenaBarCode() + hasSameAthenaBarCodeExcept Version() + getVersion() + newVersion() + setVersion() Node3->Node2 Node4 INavigable   + ~INavigable() + fillToken() + fillToken() Node4->Node2 Node5 I4Momentum   + ~I4Momentum() + px() + py() + pz() + m() + m2() + p() + p2() + eta() + rapidity() and 18 more... Node5->Node2