public function higherItems($limit = null)
    {
        if ($this->isNotInList()) return null;

        $query = $this->listifyScopedQuery()
            ->where($this->positionColumn(), '<', $this->getListifyPosition())
            ->orderBy($this->getTable() . '.' . $this->positionColumn(), 'DESC');

        if (null !== $limit) {
            $query->take($limit);
        }

        return $query->get();
    }