private IEnumerable <RestItem> GetRoot()
        {
            var stopwatch            = new Stopwatch();
            var messageStringBuilder = new StringBuilder("GetRoot request...");

            try
            {
                stopwatch.Start();

                var getRootResponse = ConnectClient.Login();
                messageStringBuilder.AppendFormat("took {0}ms", stopwatch.ElapsedMilliseconds);
                stopwatch.Restart();

                if (getRootResponse.ErrorException != null || getRootResponse.Content == null)
                {
                    RestErrorHelper.LogRestError(Logger, getRootResponse, "GetRoot HTTP error");
                    throw new Exception("Error calling GetRoot", getRootResponse.ErrorException);
                }

                if (getRootResponse.StatusCode == HttpStatusCode.Unauthorized)
                {
                    throw new NotAuthenticatedException("Username or password are incorrect");
                }

                if (getRootResponse.Content != null)
                {
                    return(getRootResponse.Content.FromJson <List <RestItem> >());
                }
            }
            catch (NotAuthenticatedException)
            {
                throw;
            }
            catch (Exception ex)
            {
                Logger.LogError("GetRoot exception", ex);
                throw;
            }
            finally
            {
                Logger.LogError(messageStringBuilder.ToString());
                stopwatch.Stop();
            }

            return(null);
        }