Ability to define class validation rules against an interface

[jeremydmiller]

We hit this at work. Say I have an interface called "IFoo" and two classes named "OneFoo" and "TwoFoo." I'd like to be able to define the common validation rules w/

public class FooRules : ClassValidationRules where T : IFoo

then....

public class OneRules : FooRules

and

public class TwoRules : FooRules