CUpdateSystem::GetLicenseKey

static function GetLicenseKey()
{
	if(defined("LICENSE_KEY"))
		return LICENSE_KEY;
	if (!isset($GLOBALS["CACHE4UPDATESYS_LICENSE_KEY"])	|| $GLOBALS["CACHE4UPDATESYS_LICENSE_KEY"]=="")
	{
		$LICENSE_KEY = "demo";
		if (file_exists($_SERVER["DOCUMENT_ROOT"]."/bitrix/license_key.php"))
			include($_SERVER["DOCUMENT_ROOT"]."/bitrix/license_key.php");
		$GLOBALS["CACHE4UPDATESYS_LICENSE_KEY"] = $LICENSE_KEY;
	}
	return $GLOBALS["CACHE4UPDATESYS_LICENSE_KEY"];
}