Doctrine\ODM\MongoDB\UnitOfWork::initializeObject PHP Method

    public function initializeObject($obj)
    {
        if ($obj instanceof Proxy) {
            $obj->__load();
        } elseif ($obj instanceof PersistentCollectionInterface) {
            $obj->initialize();
        }
    }

 /**
  * Helper method to initialize a lazy loading proxy or persistent collection.
  *
  * This method is a no-op for other objects.
  *
  * @param object $obj
  */
 public function initializeObject($obj)
 {
     $this->unitOfWork->initializeObject($obj);
 }