/**
  * @param Smoking $smoking
  *
  * @return Questionnaire
  */
 public function getQuestionnaireFromSmoking(Smoking $smoking)
 {
     $query = $this->getEntityManager()->createQueryBuilder()->select('q')->from("TransformCore\\PHE\\HayApi\\PersistenceBundle\\Entity\\Questionnaire", "q")->where("q.smoking = :smoking_questionnaire_id")->setParameter("smoking_questionnaire_id", $smoking->getQuestionnaire()->getId())->getQuery();
     return $query->getOneOrNullResult();
 }