text: public virtual DescribeReservedInstancesListingsResponse DescribeReservedInstancesListings(DescribeReservedInstancesListingsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeReservedInstancesListingsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeReservedInstancesListingsResponseUnmarshaller.Instance;return Invoke<DescribeReservedInstancesListingsResponse>(request, options);}