DummyEquation Node1 DummyEquation + DummyEquation() + ~DummyEquation() + EvaluateRhsGivenB() + SetChargeMomentumMass() Node2 G4EquationOfMotion Node2->Node1 Node3 std::unique_ptr< G4Uniform MagField > + ptr + operator->() Node3->Node1 -m_dummyField