ISF::ISFEnvelopeDefSvc Node1 ISF::ISFEnvelopeDefSvc + ISFEnvelopeDefSvc() + ~ISFEnvelopeDefSvc() + initialize() + finalize() + getRZBoundary() + getRPositiveZBoundary() Node2 extends< AthService, IEnvelopeDefSvc > Node2->Node1 Node3 std::vector< RZPair > + elements Node3->Node1 -m_rzBeamPipe -m_rzInDet -m_rposzInDet -m_rposzBeamPipe Node4 ServiceHandle< IEnvelope DefSvc > Node4->Node1 -m_atlasEnvDefSvc