public function getUserProfilePropertyFor ($accountName,$propertyName)
    {
        $clientResult = new ClientResult();
        $qry = new InvokeMethodQuery(
            $this->getResourcePath(),
            "GetUserProfilePropertyFor",
            array(
                "accountname" => rawurlencode($accountName),
                "propertyname" => $propertyName
            )
        );
        $this->getContext()->addQuery($qry,$clientResult);
        return $clientResult;
    }