The other group insurance schemes referred to in the first paragraph of Article L. 381-1 are as follows:
1° The scheme set up by the Caisse nationale de prévoyance de la fonction publique referred to in Article L. 132-23;
2° The agreement known as the “complémentaire retraite des hospitaliers” referred to in Article L. 132-23;
3° Other optional group schemes designed to cover retirement commitments governed by this Code or the Mutual Code.