public async Task <bool> AddAsync(UserTwoFactorHolder userTwoFactorHolder) => await Task.Run(() => { UserTwoFactorHolders.Add(userTwoFactorHolder); return(UserTwoFactorHolders.Any()); });
public async Task <bool> RemoveAsync(UserTwoFactorHolder userTwoFactorHolder) => await Task.Run(() => UserTwoFactorHolders.Remove(userTwoFactorHolder));