How do you implement Custom Eloquent Casts with Value Objects in modern Laravel?

Implementing CastsAttributes

class MoneyCast implements CastsAttributes
{
    public function get(Model $model, string $key, mixed $value, array $attributes): ?Money
    {
        return $value !== null ? new Money((int) $value, $attributes['currency'] ?? 'USD') : null;
    }

    public function set(Model $model, string $key, mixed $value, array $attributes): array
    {
        if ($value instanceof Money) {
            return [$key => $value->getAmountInCents(), 'currency' => $value->getCurrency()];
        }
        return [$key => (int) $value];
    }
}