Highloadblock::getIdByXmlId

static function getIdByXmlId(int $hlblockId, array $xmlIds): array
{
	$result = [];
	$xmlIds = array_filter($xmlIds); // '0' - not valid code
	if (empty($xmlIds))
	{
		return $result;
	}
	$hlblock = Highload\HighloadBlockTable::resolveHighloadblock($hlblockId);
	if ($hlblock === null)
	{
		return $result;
	}
	$entity = Highload\HighloadBlockTable::compileEntity($hlblock);
	$fieldsList = $entity->getFields();
	if (isset($fieldsList['ID']) && isset($fieldsList['UF_XML_ID']))
	{
		$entityDataClass = $entity->getDataClass();
		$iterator = $entityDataClass::getList([
			'select' => [
				'ID',
				'UF_XML_ID',
			],
			'filter' => [
				'@UF_XML_ID' => $xmlIds,
			],
		]);
		while ($value = $iterator->fetch())
		{
			$result[$value['UF_XML_ID']] = (int)$value['ID'];
		}
		unset($value, $iterator);
		unset($entityDataClass);
	}
	unset($fieldsList, $entity);

	return $result;
}