}
        if (handler != null) {
            validateRuleMethod(ruleDefinition, method, context);
            return handler.registration(ruleDefinition, context);
        } else {
            validateNonRuleMethod(method, context);
            return null;
        }
    }

    private void validateClass(Class<?> source, RuleSourceValidationProblemCollector problems) {
        int modifiers = source.getModifiers();