Kdyby\Doctrine\EntityManager::flush PHP Method

    public function flush($entity = null)
    {
        try {
            parent::flush($entity);
        } catch (\Exception $e) {
            if ($this->panel) {
                $this->panel->markExceptionOwner($this, $e);
            }
            throw $e;
        }
        return $this;
    }

 /**
  * @param array $values
  * @return Comment
  * @throws ActionFailedException
  */
 public function save(array $values)
 {
     $numberOfComments = $this->getNumberOfComments($values['page']);
     $repliesReferences = $this->findRepliesReferences($values['text']);
     try {
         $this->em->beginTransaction();
         // no replies references found
         if (empty($repliesReferences)) {
             $comment = new Comment($values['author'], $this->texy->process($values['text']), $values['page'], $numberOfComments + 1, $this->request->getRemoteAddress());
             $this->em->persist($comment)->flush();
             $this->em->commit();
             return $comment;
         }
         $commentsToReply = $this->findCommentsToReply($values['page'], $repliesReferences);
         $values['text'] = $this->replaceReplyReferencesByAuthors($values['text'], $commentsToReply);
         $comment = new Comment($values['author'], $this->texy->process($values['text']), $values['page'], $numberOfComments + 1);
         $this->em->persist($comment);
         /** @var Comment $comment */
         foreach ($commentsToReply as $commentToReply) {
             $commentToReply->addReaction($comment);
             $this->em->persist($commentToReply);
         }
         $this->em->flush();
         $this->em->commit();
     } catch (\Exception $e) {
         $this->em->rollback();
         $this->em->close();
         throw new ActionFailedException();
     }
     return $comment;
 }