/// <inheritdoc />
protected override async Task RemoveUserTokenAsync(TUserToken token)
{
UserTokens ??= (await UserTokensRecord.GetTokensAsync(token.UserId)).ToList();
UserTokens.Remove(token);
}
/// <inheritdoc />
protected override async Task AddUserTokenAsync(TUserToken token)
{
token.ThrowIfNull(nameof(token));
UserTokens ??= (await UserTokensRecord.GetTokensAsync(token.UserId)).ToList();
UserTokens.Add(token);
}