public function findAll()
 {
     $reponse = $this->db->query(self::FIND_ALL);
     $responsables = array();
     while ($data = $reponse->fetch()) {
         $responsable = new Responsable();
         $responsable->setId($data['NUMERO_RESPONSABLE']);
         $responsable->setPrenom($data['PRENOM_RESPONSABLE']);
         $responsable->setNom($data['NOM_RESPONSABLE']);
         $responsable->setFonction($data['FONCTION']);
         array_push($responsables, $responsable);
     }
     $reponse->closeCursor();
     return $responsables;
 }