public void ajoutUneQualification(Qualification q)
 {
     lesQualifications.Add(q);
 }
        public void ajouterQualification(String unLibelleQualification, int unCodeQualification)
        {
            Qualification q = new Qualification(unCodeQualification, unLibelleQualification);

            lesQualifications.Add(q);
        }