public function get_preapproval_payment($id) {
        $request = array(
            "uri" => "/preapproval/{$id}",
            "params" => array(
                "access_token" => $this->get_access_token()
            )
        );

        $preapproval_payment_result = MPRestClient::get($request);
        return $preapproval_payment_result;
    }