Happyr\DoctrineSpecification\Specification\Having::getFilter PHP Метод

    public function getFilter(QueryBuilder $qb, $dqlAlias)
    {
        if ($this->child instanceof Filter) {
            $qb->having($this->child->getFilter($qb, $dqlAlias));
        } else {
            $qb->having($this->child);
        }
    }