/// <summary>Process the operation topic list R4.</summary>
        /// <param name="response">[in,out] The response.</param>
        internal static void ProcessOperationTopicList(
            ref HttpResponseMessage response)
        {
            Parameters topics = new Parameters();

            foreach (string topicUrl in SubscriptionTopicManager.GetTopicUrlList())
            {
                topics.Add("subscription-topic-canonical", new Canonical(topicUrl));
            }

            ProcessorUtils.SerializeR4(ref response, topics);
        }