/// <summary> Gets a list of messages from a thread. </summary> /// <param name="startTime"> The earliest point in time to get messages up to. The timestamp should be in ISO8601 format: `yyyy-MM-ddTHH:mm:ssZ`. </param> /// <param name="cancellationToken"> The cancellation token to use. </param> /// <exception cref="RequestFailedException">The server returned an error. See <see cref="Exception.Message"/> for details returned from the server.</exception> public virtual Pageable <ChatMessage> GetMessages(DateTimeOffset?startTime = null, CancellationToken cancellationToken = default) { Page <ChatMessage> FirstPageFunc(int?pageSizeHint) { using DiagnosticScope scope = _clientDiagnostics.CreateScope($"{nameof(ChatThreadClient)}.{nameof(GetMessages)}"); scope.Start(); try { Response <ChatMessagesCollection> response = _chatThreadRestClient.ListChatMessages(Id, pageSizeHint, startTime, cancellationToken); return(Page.FromValues(response.Value.Value.Select(x => new ChatMessage(x)), response.Value.NextLink, response.GetRawResponse())); } catch (Exception e) { scope.Failed(e); throw; } } Page <ChatMessage> NextPageFunc(string nextLink, int?pageSizeHint) { using DiagnosticScope scope = _clientDiagnostics.CreateScope($"{nameof(ChatThreadClient)}.{nameof(GetMessages)}"); scope.Start(); try { Response <ChatMessagesCollection> response = _chatThreadRestClient.ListChatMessagesNextPage(nextLink, Id, pageSizeHint, startTime, cancellationToken); return(Page.FromValues(response.Value.Value.Select(x => new ChatMessage(x)), response.Value.NextLink, response.GetRawResponse())); } catch (Exception e) { scope.Failed(e); throw; } } return(PageableHelpers.CreateEnumerable(FirstPageFunc, NextPageFunc)); }