Sure, but nothing is stopping you from writing a `validate()` method right? It also appears to me that having so many validations for a base type `String` is in

Sure, but nothing is stopping you from writing a `validate()` method right? It also appears to me that having so many validations for a base type `String` is indicative that there should be a `Date`, `Time`, and `Zone` type respectively for each of the arguments.