McEventSelector Node1 McEventSelector - m_runNo - m_firstEventNo - m_eventsPerRun - m_firstLBNo - m_eventsPerLB - m_initTimeStamp - m_timeStampInterval - m_overrideRunNumber - m_overrideEventNumber - m_overrideLBNumber - m_overrideTimeStamp - m_ctx + initialize() + stop() + queryInterface() + createContext() + last() + next() + next() + previous() + previous() + rewind() and 8 more... Node2 AthService - AthService() - AthService() - operator=() Node2->Node1 Node3 AthCommonMsg< Service > + msg() + msg() + msgLvl() Node3->Node2 Node4 Service Node4->Node3 Node5 IEvtSelector Node5->Node1 Node6 IEvtSelectorSeek + DeclareInterfaceID() + seek() + curEvent() + size() Node6->Node1 Node7 INamedInterface Node7->Node6