text: public virtual DescribeUsageReportSubscriptionsResponse DescribeUsageReportSubscriptions(DescribeUsageReportSubscriptionsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeUsageReportSubscriptionsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeUsageReportSubscriptionsResponseUnmarshaller.Instance;return Invoke<DescribeUsageReportSubscriptionsResponse>(request, options);}