DocumentHandlersManager::getPortalZone

protected function getPortalZone(): ?string
{
	$portalPrefix = null;
	if (Loader::includeModule('bitrix24'))
	{
		$portalPrefix = CBitrix24::getLicensePrefix();
	}
	elseif (Loader::includeModule('intranet'))
	{
		$portalPrefix = CIntranetUtils::getPortalZone();
	}

	if (!$portalPrefix)
	{
		return null;
	}

	return $portalPrefix;
}