@Override
public List<IUtilisateur> retrieveAll() {
if (users.isEmpty()) {
users.add(new Utilisateur("Geek", "Student Inside", "GSI",
"gsiemn@googlegroups.com", "gsi"));
users.add(new Utilisateur("Tata", "Toto Inside", "Tutu",
"gsiemn@googlegroups.com", "tutu"));
}
return users;
}