private RuleSourceBackedRuleAction(R instance, JavaMethod<R, T> ruleMethod) {
        this.instance = instance;
        this.ruleMethod = ruleMethod;
        this.inputTypes = determineInputTypes(ruleMethod.getParameterTypes());
    }

    public static <R, T> RuleSourceBackedRuleAction<R, T> create(ModelType<T> subjectType, R ruleSourceInstance) {