Fluent Validation を使用して C# でプロパティの最小長と最大長の検証を確認するにはどうすればよいですか?

static void Main(string[] args){
   List errors = new List();

   PersonModel person = new PersonModel();
   person.FirstName = "TestUser444";
   person.LastName = "TTT";

   PersonValidator validator = new PersonValidator();
   ValidationResult results = validator.Validate(person);

   if (results.IsValid == false){
      foreach (ValidationFailure failure in results.Errors){
         errors.Add(failure.ErrorMessage);
      }
   }

   foreach (var item in errors){
      Console.WriteLine(item);
   }
   Console.ReadLine();
   }
}
public class PersonModel{
   public string FirstName { get; set; }
   public string LastName { get; set; }
}
public class PersonValidator : AbstractValidator{
   public PersonValidator(){
      RuleFor(p => p.FirstName).MaximumLength(7).WithMessage("MaximumLength must be 7 {PropertyName}") ;
      RuleFor(p => p.LastName).MinimumLength(5).WithMessage("MinimumLength must be 5 {PropertyName}");
   }
}

MaximumLength must be 7 First Name
MinimumLength must be 5 Last Name