text: public virtual DescribeGameSessionPlacementResponse DescribeGameSessionPlacement(DescribeGameSessionPlacementRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeGameSessionPlacementRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeGameSessionPlacementResponseUnmarshaller.Instance;return Invoke<DescribeGameSessionPlacementResponse>(request, options);}