BFieldVector< T > Node1 BFieldVector< T > + BFieldVector() + BFieldVector() + BFieldVector() + operator=() + operator=() + ~BFieldVector() + BFieldVector() + set() + z() + r() + phi() + operator[]() Node2 std::array< T, 3 > Node2->Node1 -m_B Node3 T Node3->Node2 +elements