Baum\SetBuilder::rebuildBounds PHP Method

    public function rebuildBounds($node, $depth = 0)
    {
        $k = $this->scopedKey($node);
        $node->setAttribute($node->getLeftColumnName(), $this->getNextBound($k));
        $node->setAttribute($node->getDepthColumnName(), $depth);
        foreach ($this->children($node) as $child) {
            $this->rebuildBounds($child, $depth + 1);
        }
        $node->setAttribute($node->getRightColumnName(), $this->getNextBound($k));
        $node->save();
    }