code: public function decodeValue(DecodePropertyValueForWidgetEvent $event)
      {
          if (!($this->wantToHandle($event) && \in_array($event->getProperty(), ['name', 'description']))) {
              return;
          }
  
          $metaModel = $this->getMetaModelByModelPid($event->getModel());
          $values    = Helper::decodeLangArray($event->getValue(), $metaModel);
  
          $event->setValue(unserialize($values, ['allowed_classes' => false]));
      }
docs: Decode the given value from a serialized language array into the real language array.
  
  @param DecodePropertyValueForWidgetEvent $event The event.
  
  @return void