SkuTree::__construct

public function __construct(BitrixCatalogv2IblockIblockInfo $iblockInfo)
{
	if (!$iblockInfo || !$iblockInfo->canHaveSku())
	{
		throw new BitrixMainNotSupportedException(sprintf(
			'Selected iblock {%s} can not have SKU.', $iblockInfo->getProductIblockId()
		));
	}

	$this->iblockInfo = $iblockInfo;
}