public object Any(GetChatHistory request)
        {
            var msgs = request.Channels.Map(x =>
                                            ChatHistory.GetRecentChatHistory(x, request.AfterId, request.Take))
                       .SelectMany(x => x)
                       .OrderBy(x => x.Id)
                       .ToList();

            return(new GetChatHistoryResponse
            {
                Results = msgs
            });
        }