def METHOD_NAME():
    epot = netket.operator.PotentialEnergy(hilb, v1)
    ekin = netket.operator.KineticEnergy(hilb, mass=20.0)
    etot = epot + ekin
    assert epot.is_hermitian
    assert ekin.is_hermitian
    assert etot.is_hermitian
    ekin = netket.operator.KineticEnergy(hilb, mass=20.0j)
    np.testing.assert_allclose(ekin.mass, 20.0j)
    assert not ekin.is_hermitian
    etot = epot + ekin
    assert not etot.is_hermitian