CWebDavIblock::CheckUniqueName

function CheckUniqueName($basename, $sectionId, &$res)
{
	$iblockId = $this->IBLOCK_ID;
	list($contextType, $contextEntityId) = $this->getContextData();
	$sectionData = $this->getSectionDataForLinkAnalyze($sectionId);
	if(CWebDavSymlinkHelper::isLink($contextType, $contextEntityId, $sectionData))
	{
		$parentSectionData = CWebDavSymlinkHelper::getLinkData($contextType, $contextEntityId, $sectionData);
		if($parentSectionData)
		{
			$iblockId = $parentSectionData[self::UF_LINK_IBLOCK_ID];
			if($parentSectionData['ID'] == $sectionId)
			{
				$sectionId = $parentSectionData[self::UF_LINK_SECTION_ID];
			}
		}
	}

	return self::sCheckUniqueName($iblockId, $sectionId, $this->workflow, $basename, $res);
}