InDet::ITRT_SegmentToTrackTool::EventData Node1 InDet::ITRT_SegmentToTrack Tool::EventData Node2 std::array< int, kNCounter > + elements Node2->Node1 +m_counter Node3 std::vector< std::pair < Trk::TrackScore, Trk ::Track * > > + elements Node3->Node1 +m_trackScores