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

    public function getNbRecommenders()
    {
        return count($this->recommenders);
    }

 /**
  * {@inheritdoc}
  */
 public function updateScore(Bundle $bundle)
 {
     $bundle->addScoreDetail('recommenders', 5 * $bundle->getNbRecommenders());
 }