private async Task ShowBalances([CanBeNull] IUser other, [NotNull] Func <IBalance, bool> filter, string none)
{
var balances = (await _transactions.GetBalances(Context.User.Id, other?.Id)).Where(filter).ToArray();
if (balances.Length == 0)
{
await ReplyAsync(none);
}
else
{
await DisplayBalances(balances);
}
}