IblockElementProvider::getMorePhotoPropertyId

private function getMorePhotoPropertyId(int $iblockId): ?int
{
	$iterator = PropertyTable::getList([
		'select' => ['ID'],
		'filter' => [
			'=IBLOCK_ID' => $iblockId,
			'=CODE' => CIBlockPropertyTools::CODE_MORE_PHOTO,
			'=ACTIVE' => 'Y',
		],
	]);
	if ($row = $iterator->fetch())
	{
		return (int)$row['ID'];
	}

	return null;
}