如何重写enum Flag子类的迭代行为？

public enum MyFlag {
    FLAG1(true),
    FLAG2(false),
    FLAG3(true);

    private boolean value;

    private MyFlag(boolean value) {
        this.value = value;
    }

    // 重写iterator()方法
    public static Iterator<MyFlag> iterator() {
        return new MyFlagIterator();
    }

    // 自定义迭代器类
    private static class MyFlagIterator implements Iterator<MyFlag> {
        private int index = 0;

        @Override
        public boolean hasNext() {
            return index < MyFlag.values().length;
        }

        @Override
        public MyFlag next() {
            return MyFlag.values()[index++];
        }
    }
}

for (MyFlag flag : MyFlag.values()) {
    System.out.println(flag);
}

FLAG1
FLAG2
FLAG3