  If any of them are invalid, return immediately
            from <code>validate()</code>.  This ensures class-level
            validation is only performed on an instance whose fields are
            all individually valid.</p>

            <p>Otherwise it can be assumed that all field-level
            validations for this class-level validation have passed.</p>

            <p>Class-level bean validation must operate on a
            sufficiently populated bean instance.  This differs from JSF
         