public string Execute()
        {
            double storageUsed  = (double)(_fileService.GetStorageSize() / 1000000);
            string userName     = ConfigProvider.GetLogin();
            string creationDate = ConfigProvider.GetCreationDate();

            return($"login: {userName}\n" +
                   $"creation date: {creationDate}\n" +
                   $"storage used: {storageUsed} MB");
        }