text: public virtual DescribeOrderableDBInstanceOptionsResponse DescribeOrderableDBInstanceOptions(DescribeOrderableDBInstanceOptionsRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeOrderableDBInstanceOptionsRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeOrderableDBInstanceOptionsResponseUnmarshaller.Instance;return Invoke<DescribeOrderableDBInstanceOptionsResponse>(request, options);}