Ublaboo\DataGrid\DataGrid::addToExports PHP Method

    protected function addToExports(Export\Export $export)
    {
        $id = ($s = sizeof($this->exports)) ? $s + 1 : 1;
        $export->setLink(new Link($this, 'export!', ['id' => $id]));
        return $this->exports[$id] = $export;
    }