text: public virtual DescribeNotificationSubscriptionsResponse DescribeNotificationSubscriptions(DescribeNotificationSubscriptionsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeNotificationSubscriptionsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeNotificationSubscriptionsResponseUnmarshaller.Instance;return Invoke<DescribeNotificationSubscriptionsResponse>(request, options);}