ITrigPrimaryVertexFitter Node1 ITrigPrimaryVertexFitter + fit() + fit() + interfaceID() Node3 TrigPrimaryVertexFitter - m_numIter - m_zVariance - m_maxChi2Increase - m_chi2cut - m_chi2cut_loose - m_createTrackLists - m_xyVariance + TrigPrimaryVertexFitter() + ~TrigPrimaryVertexFitter() + initialize() + finalize() + fit() + fit() Node1->Node3 Node2 IAlgTool Node2->Node1