private static async Task <bool> TransitionCheck(GoogleDrive drive)
        {
            UpdateInfo("Проверка ...");
            IEnumerable <string> files = await drive.GetFilesAsync();

            if (files != null && files.Count() > 0)
            {
                foreach (string name in files)
                {
                    //if a folder with a special name exists, then the transition has already been
                    if (name == Date.GetFullPrevMonth())
                    {
                        return(false);
                    }
                }
            }
            return(true);
        }