pub trait HyperviscoelasticFiniteElement<C, const G: usize, const N: usize>where
C: Hyperviscoelastic,
Self: ElasticHyperviscousFiniteElement<C, G, N>,{
// Required method
fn helmholtz_free_energy(
&self,
nodal_coordinates: &CurrentCoordinates<D>,
) -> Result<Scalar, ConstitutiveError>;
}