Caliburn.Micro.Autofac.StorageHandlers.WinRTRoamingStorageMechanism.SaveAsync C# (CSharp) Метод

        public static async Task SaveAsync()
        {
            try
            {
                var sessionData = new MemoryStream();
                var serializer = new DataContractJsonSerializer(typeof(Dictionary<string, object>), _knownTypes);
                serializer.WriteObject(sessionData, _sessionState);

                var file = await ApplicationData.Current.LocalFolder.CreateFileAsync(SessionStateFilename, CreationCollisionOption.ReplaceExisting);
                using (Stream fileStream = await file.OpenStreamForWriteAsync())
                {
                    sessionData.Seek(0, SeekOrigin.Begin);
                    await sessionData.CopyToAsync(fileStream);
                    await fileStream.FlushAsync();
                }
            }
            catch (UnauthorizedAccessException)
            { }
            catch (Exception e)
            {
                throw new SuspensionManagerException(e);
            }
        }