How to access create query method in symfony repository

I have the class user repository

class userRepository extends EntityRepository
{

    function getuserData($id)
    {
        $query = $this->createQuery('
                SELECT c FROM AcmeBundle:User c 
                WHERE c.id = :id ORDER BY c.id ASC
            ')
            ->setParameter('id', $id);

        return $query->getResult();
    }
}

I am getting this error

Undefined method 'createQuery'. The method name must start with either findBy or findOneBy!