public void enregistrer() {
   if (selectedReassurance != null) {
     reassuranceService.modifier(formReassurance);
   } else {
     reassuranceService.ajouter(formReassurance);
   }
 }
 public void supprimer() {
   if (selectedReassurance != null) {
     reassuranceService.supprimer(selectedReassurance);
   }
 }