UserLimitsSvc Node1 UserLimitsSvc - m_MaxStep - m_MinEkine - m_MaxTrackLength - m_MaxTime - m_MinRange - m_matchType - m_logicalVolumes + UserLimitsSvc() + ~UserLimitsSvc() + initialize() - isMatch() - contains() Node2 extends< AthService, IUserLimitsSvc > Node2->Node1