text: public virtual DescribeScalingActivitiesResponse DescribeScalingActivities(DescribeScalingActivitiesRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeScalingActivitiesRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeScalingActivitiesResponseUnmarshaller.Instance;return Invoke<DescribeScalingActivitiesResponse>(request, options);}