text: public virtual DescribeCampaignResponse DescribeCampaign(DescribeCampaignRequest request){var options = new InvokeOptions();options.RequestMarshaller = DescribeCampaignRequestMarshaller.Instance;options.ResponseUnmarshaller = DescribeCampaignResponseUnmarshaller.Instance;return Invoke<DescribeCampaignResponse>(request, options);}