TrigVertexFitConstraint Node1 TrigVertexFitConstraint - m_trackList - m_value + TrigVertexFitConstraint() + TrigVertexFitConstraint() + ~TrigVertexFitConstraint() + getChi2Distance() + updateVertex() + report() + getValue() - calculateInvariantMass() Node2 TrigVertexFittingNode # m_resid # m_V # m_D + TrigVertexFittingNode() + ~TrigVertexFittingNode() + getChi2Distance() + updateVertex() + report() Node2->Node1