Sorry, I didn't express it well I was thinking that using javax.validation.Validator would be a cleaner way to validate the bean instances instead of performing manual checks (like the null check mentioned above)

e.g:

@Inject
private Validator validator;

Set<ConstraintViolation<AndroidVariant>> violations = validator.validate(androidVariantInstance);

The above code validates your instance according the BV rules (@NotNull etc) and returns a Set of javax.validation.ConstraintViolation.