TRTPhysicsTool Node1 TRTPhysicsTool # m_xmlFile + TRTPhysicsTool() + ~TRTPhysicsTool() + initialize() + ConstructParticle() + ConstructProcess() + GetPhysicsOption() Node2 G4VPhysicsConstructor Node2->Node1 Node3 extends< AthAlgTool, IPhysicsOptionTool > Node3->Node1