private async Task SynchronizeBricksetPrimaryUser(string apiKey, string username) { var userHash = await _secureStorageService.GetBricksetUserHash(username); if (string.IsNullOrWhiteSpace(userHash)) { throw new Exception($"Invalid user hash for primary user '{username}'"); } await _userSynchronizer.SynchronizeBricksetPrimaryUser(apiKey, username, userHash); }