ZMassConstraint::ConstraintFitInput Node1 ZMassConstraint::Constraint FitInput # m_isOK + ConstraintFitInput() + ~ConstraintFitInput() + getNConstituents() + getConstituentFourVector() + AmgMatrix() + getConstituentCovariance PhiThetaP() + AmgMatrix() + addConstituent_FourVector _d0z0PhiThetaP() + isOK() Node2 std::vector< TLorentzVector > + elements Node2->Node1 #m_particles Node3 std::vector< AmgMatrix (5, 5)> + elements Node3->Node1 #m_covariances #m_cartCovariances