Nette\Database\Table\Selection::limit PHP Method

    public function limit($limit, $offset = NULL)
    {
        $this->emptyResultSet();
        $this->sqlBuilder->setLimit($limit, $offset);
        return $this;
    }

 /**
  * @param int $limit
  * @param int $offset
  * @return array
  */
 public function getData($limit = NULL, $offset = NULL)
 {
     if ($limit !== NULL) {
         $this->source->limit($limit, $offset);
     }
     return $this->source->fetchAll();
 }