FluentValidation -如何让一个实体属性值驱动另一个实体验证

public class Order
{
    public decimal TotalAmount { get; set; }
    public int Discount { get; set; }
}

public class OrderValidator : AbstractValidator<Order>
{
    public OrderValidator()
    {
        RuleFor(order => order.TotalAmount).GreaterThan(0);

        RuleFor(order => order.Discount).Must((order, discount) =>
        {
            // 根据TotalAmount和Discount进行验证
            if (order.TotalAmount >= 100 && discount > 10)
            {
                return false;
            }
            return true;
        }).WithMessage("Discount is not valid for the given TotalAmount.");
    }
}