/// <summary>Snippet for ListCollectionIds</summary>
        public void ListCollectionIds_RequestObject()
        {
            // Snippet: ListCollectionIds(ListCollectionIdsRequest,CallSettings)
            // Create client
            FirestoreClient firestoreClient = FirestoreClient.Create();
            // Initialize request argument(s)
            ListCollectionIdsRequest request = new ListCollectionIdsRequest
            {
                Parent = new AnyPathName("[PROJECT]", "[DATABASE]", "[DOCUMENT]", "[ANY_PATH]").ToString(),
            };
            // Make the request
            PagedEnumerable <ListCollectionIdsResponse, string> response =
                firestoreClient.ListCollectionIds(request);

            // Iterate over all response items, lazily performing RPCs as required
            foreach (string item in response)
            {
                // Do something with each item
                Console.WriteLine(item);
            }

            // Or iterate over pages (of server-defined size), performing one RPC per page
            foreach (ListCollectionIdsResponse page in response.AsRawResponses())
            {
                // Do something with each page of items
                Console.WriteLine("A page of results:");
                foreach (string item in page)
                {
                    Console.WriteLine(item);
                }
            }

            // Or retrieve a single page of known size (unless it's the final page), performing as many RPCs as required
            int           pageSize   = 10;
            Page <string> singlePage = response.ReadPage(pageSize);

            // Do something with the page of items
            Console.WriteLine($"A page of {pageSize} results (unless it's the final page):");
            foreach (string item in singlePage)
            {
                Console.WriteLine(item);
            }
            // Store the pageToken, for when the next page is required.
            string nextPageToken = singlePage.NextPageToken;
            // End snippet
        }