Can't have my model and eat it too :)

[SJrX]

If you call NewValidator() the resulting validator has the v.document field set. However if I want you call NewValidatorFromV3Model() it doesn't. Without this being set you get a panic when you call ValidateDocument(). I eventually dug into the code, and I found that the v3 Model is cached in the document, so just did that.

It's possible that I'm just missing something obvious with Go, but due to the private access, you can't actually repair the invariant if you try and build it from the model, because the document field is private (as is the type).

[daveshanley]

There may be a gap in the API here, I will look into this.