Knp\Bundle\KnpBundlesBundle\Entity\Bundle::getId PHP Method

    public function getId()
    {
        return $this->id;
    }

 /**
  * Finds the Score object for a given date and bundle
  *
  * @param DateTime $date
  * @param Bundle $bundle
  * @return Score or null
  */
 public function findOneByDateAndBundle(\DateTime $date, Bundle $bundle)
 {
     try {
         return $this->createQueryBuilder('s')->where('s.bundle = :bundle_id')->andWhere('s.date = :date')->setParameter('bundle_id', $bundle->getId())->setParameter('date', $date->format('Y-m-d'))->getQuery()->getSingleResult();
     } catch (NoResultException $e) {
         return null;
     }
 }