如果数据类型为long，如何使用fluent属性验证进行检查

using FluentValidation;

public class MyModel
{
    public long MyLongProperty { get; set; }
}

public class MyModelValidator : AbstractValidator<MyModel>
{
    public MyModelValidator()
    {
        RuleFor(x => x.MyLongProperty)
            .NotEmpty()
            .WithMessage("MyLongProperty不能为空")
            .GreaterThanOrEqualTo(0)
            .WithMessage("MyLongProperty必须大于等于0");
    }
}

public class Program
{
    public static void Main(string[] args)
    {
        var myModel = new MyModel { MyLongProperty = -1 };

        var validator = new MyModelValidator();
        var result = validator.Validate(myModel);

        if (!result.IsValid)
        {
            foreach (var error in result.Errors)
            {
                Console.WriteLine(error.ErrorMessage);
            }
        }
    }
}