Base::getOffersIblockId

protected function getOffersIblockId($iblockId)
{
	if (!$this->useCatalog)
		return null;
	if (!isset($this->storage['CATALOGS'][$iblockId]))
		return null;
	if (
		$this->storage['CATALOGS'][$iblockId]['CATALOG_TYPE'] != CCatalogSku::TYPE_PRODUCT
		&& $this->storage['CATALOGS'][$iblockId]['CATALOG_TYPE'] != CCatalogSku::TYPE_FULL
	)
		return null;
	return $this->storage['CATALOGS'][$iblockId]['IBLOCK_ID'];
}