/**
* Return region code by id
*
* @param $regionId
* @return string|null
* @throws LocalizedException
*/
protected function getRegionCodeById($regionId)
{
if (!$regionId) {
return null;
}
/** @var \Magento\Directory\Model\Region $region */
$region = $this->regionCollection->getItemById($regionId);
if (!$region instanceof Region) {
throw new LocalizedException(__('Region "%1" was not found.', [$regionId]));
}
return $region->getCode();
}
