private static bool DownloadTicket(GoogleCloudPrintClient client, Models.Job.Job printJob)
        {
            try
            {
                //var ticket = client.GetTicketAsync(printJob.TicketUrl, proxy).Result;
                var request = new TicketRequest {
                    JobId = printJob.Id
                };
                var ticket = client.GetCloudJobTicketAsync(request).Result;
                Directory.CreateDirectory(TicketFolderPath);
                string path = $"{Path.Combine(TicketFolderPath, Path.GetFileNameWithoutExtension(printJob.Title))}.xml";
                //ticket.Save(path);

                Console.WriteLine($"Ticket {printJob.Title} is saved.");
            }
            catch (System.Exception ex)
            {
                Console.WriteLine(ex.ToString());
                return(false);
            }
            return(true);
        }