code: private function getByCountryAndBusinessQuery()
      {
          if (null === $this->byCountryAndBusinessQuery) {
              $qb = $this->getBaseQueryBuilder();
  
              $this->byCountryAndBusinessQuery = $qb
                  ->andWhere($qb->expr()->eq('r.business', ':business'))
                  ->getQuery()
                  ->setParameter('business', true)
                  ->setMaxResults(1);
          }
  
          return $this->byCountryAndBusinessQuery;
      }
docs: Returns the "find one by country and business" query.
  
  @return \Doctrine\ORM\Query