class urn_perun_user_attribute_def_def_kerberosLogins extends UserAttributesModuleAbstract implements UserAttributesModuleImplApi {

	@Override
	public void checkAttributeSemantics(PerunSessionImpl sess, User user, Attribute attribute) throws WrongReferenceAttributeValueException {
		if(attribute.getValue() == null) throw new WrongReferenceAttributeValueException(attribute, null, user, null, "Attribute's value can't be null.");
	}

}