TrigEventSelectorByteStream Node1 TrigEventSelectorByteStream + TrigEventSelectorByteStream() + ~TrigEventSelectorByteStream() + initialize() + finalize() + createContext() + next() + next() + previous() + previous() + last() + rewind() + createAddress() + releaseContext() + resetCriteria() Node2 extends< AthService, IEvtSelector > Node2->Node1 Node3 ServiceHandle< IByteStream InputSvc > Node3->Node1 -m_eventSource Node4 ServiceHandle< StoreGate Svc > Node4->Node1 -m_evtStore