ISF::GenParticlePositionFilter Node1 ISF::GenParticlePosition Filter + GenParticlePositionFilter() + ~GenParticlePositionFilter() + initialize() + finalize() + pass() Node2 extends< AthAlgTool, IGenParticleFilter > Node2->Node1 Node3 ServiceHandle< ISF ::IGeoIDSvc > Node3->Node1 -m_geoIDSvc Node4 std::vector< int > + elements Node4->Node1 -m_checkRegion