code: public function load(ObjectManager $manager)
      {
          $objects = $this->parse($this->path);
  
          foreach ($objects as $object) {
              $parameter = new ParameterEntity;
              $parameter
                  ->setKey($object->key)
                  ->setValue($object->value);
              $manager->persist($parameter);
          }
  
          $manager->flush();
      }
docs: {@inheritdoc}