code: @Override
    public final void initialize(final VatId pconstraintAnnotation) {
      message = pconstraintAnnotation.message();
      fieldCountryCode = pconstraintAnnotation.fieldCountryCode();
      allowLowerCaseCountryCode = pconstraintAnnotation.allowLowerCaseCountryCode();
      fieldVatId = pconstraintAnnotation.fieldVatId();
    }
docs: {@inheritDoc} initialize the validator.
  
  @see javax.validation.ConstraintValidator#initialize(java.lang.annotation.Annotation)