public void consultar_historial(ToggleEvent event) {
   if (event.getVisibility() == Visibility.VISIBLE) {
     this.historico_fCalibracion =
         this.controller.historial_fCalibracion(
             ((SweFactCalXTsol) event.getData()).getSweCata().getIdCatalogo());
   }
 }
 @Override
 public void onRowToggle(final ToggleEvent event) {
   msgItems.clear();
   if (Visibility.VISIBLE.equals(event.getVisibility())) {
     msgItems.addAll(((Transaction) event.getData()).getRelatedItems());
   }
 }