public function configureOptions()
{
if (!$this->validUnits) {
$list = new \Pimcore\Model\Object\QuantityValue\Unit\Listing();
$units = $list->getUnits();
if (is_array($units)) {
$this->validUnits = [];
/** @var $unit Model\Object\QuantityValue\Unit */
foreach ($units as $unit) {
$this->validUnits[] = $unit->getId();
}
}
}
}