code: public function unload(Tenant $tenant)
      {
          $builder = $this->entityManager->getRepository(Permission::class)->createQueryBuilder('e');
          $builder
              ->delete()
              ->where('e.tenant = :tenant')
              ->setParameter('tenant', $tenant->getUuid());
          $query = $builder->getQuery();
          $query->execute();
  
          $builder = $this->entityManager->getRepository(Access::class)->createQueryBuilder('e');
          $builder
              ->delete()
              ->where('e.tenant = :tenant')
              ->setParameter('tenant', $tenant->getUuid());
          $query = $builder->getQuery();
          $query->execute();
      }
docs: {@inheritdoc}