MuonTrackStatisticsTool::TrackCounters Node1 MuonTrackStatisticsTool ::TrackCounters + nEvents + nTracks + nHits + nEtaHits + nEtaTrig + nPhiHits + nScatter + nHoles + nPsudo + summedchi2 + TrackCounters() Node2 std::string Node2->Node1 +trackLocation Node3 std::basic_string< char > Node3->Node2