public function getHTMLFragments($field)
{
GridFieldExtensions::include_requirements();
$field->addExtraClass('ss-gridfield-orderable');
$field->setAttribute('data-immediate-update', (string) (int) $this->immediateUpdate);
$field->setAttribute('data-url-reorder', $field->Link('reorder'));
$field->setAttribute('data-url-movetopage', $field->Link('movetopage'));
}