public static function subscribe()
{
return new GroupSelect(array('ns', 'name', 'label', 'visible', 'castes', 'leavable'), array('castes' => CasteSelect::bubble()));
}
public function bubble()
{
$castes = $this->parents()->select(CasteSelect::bubble());
foreach ($castes as $caste) {
$caste->compute();
}
}
