public function updateAllOrders() {
        $orderIds = $this->getAllAmazonPayOrders();
        foreach ($orderIds as $oa) {
            $orderId = (int)$oa['order_id'];
            $ometa = new Models\OrderMeta($orderId);
            // order state is updated automatically by these API calls
            if ($ometa->getChargeId() !== null) {
                $chargeState = $ometa->getChargeState();
                if (!$chargeState->isCanceled() && !$chargeState->isCaptured()) {
                    (new API\Charge\Get($this->module, $ometa))->get($ometa->getChargeId());
                }
            }
            if ($ometa->getRefundId() !== null) {
                (new API\Refund\Get($this->module, $ometa))->get($ometa->getRefundId());
            }
        }
    }