GenData Node1 GenData   + GenData() + ~GenData() * partPropSvc() * particleTable() * pdt() * particleData() * particleMass() * particleLifetime() * particleName() * GenData() * ~GenData() Node2 ServiceHandle< IPartProp Svc >     Node2->Node1 -m_ppSvc Node3 std::atomic< bool > + ptr   Node3->Node1 -m_initialized