public Bundle History(string collection, string id, DateTimeOffset?since) { RequestValidator.ValidateCollectionName(collection); RequestValidator.ValidateId(id); if (since == null) { since = DateTimeOffset.MinValue; } string title = String.Format("History for updates on '{0}' resource '{1}' since {2}", collection, id, since); RestUrl self = new RestUrl(this.Endpoint).AddPath(collection, id, RestOperation.HISTORY); if (!entryExists(collection, id)) { throw new SparkException(HttpStatusCode.NotFound, "There is no history because there is no {0} resource with id {1}.", collection, id); } var identity = ResourceIdentity.Build(collection, id).OperationPath; IEnumerable <BundleEntry> entries = _store.ListVersionsById(identity, since, Const.MAX_HISTORY_RESULT_SIZE); Bundle bundle = BundleEntryFactory.CreateBundleWithEntries(title, self.Uri, Const.AUTHOR, Settings.AuthorUri, entries); return(exportPagedBundle(bundle)); }