public function getAuthReversal(CardPayments\AuthorizationReversal $authReversal)
    {
        $authReversal->setRequiredFields(array('id'));
        $authReversal->checkRequiredFields();

        $request = new Request(array(
             'method' => Request::GET,
             'uri' => $this->prepareURI("/voidauths/" . $authReversal->id)
        ));

        $response = $this->client->processRequest($request);
        return new CardPayments\AuthorizationReversal($response);
    }