text: public virtual DescribeStreamSummaryResponse DescribeStreamSummary(DescribeStreamSummaryRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeStreamSummaryRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeStreamSummaryResponseUnmarshaller.Instance;return Invoke<DescribeStreamSummaryResponse>(request, options);}