Aditi.Scheduler.ScheduledTasks.UpdateTaskAsync C# (CSharp) Method

        public async Task<Guid> UpdateTaskAsync(TaskModel task)
        {
            var client = CreateHttpClient();

            var jsonFormatter = new JsonMediaTypeFormatter();
            var content = new ObjectContent<TaskModel>(task, jsonFormatter);
            var response = client.PutAsync(_uri.ToString() + task.Id.ToString(), content).Result;

            if (response.StatusCode == HttpStatusCode.Accepted)
                return GetOperationId(response);

            if (response.StatusCode == HttpStatusCode.BadRequest)
            {
                //check for model state errors
                string responseMessage = await response.Content.ReadAsStringAsync();
                //Json Message received from server
                //{"Message":"The request is invalid.","ModelState":{"task.Start":["Time must be in the future"],
                //"task.End":["Time must be in the future"],"task.CronExpression":["Cron expression is invalid"]}}
                if (responseMessage.Contains(SchedulerConstants.Modelstate))
                {
                    throw CreateSchedulerException(responseMessage);
                }
                else
                {
                    throw new SchedulerException(responseMessage);
                }
            }

            //TODO Is there any scenario code block will reach this?
            return Guid.Empty;
        }