如何在用gson创建的Json中添加自定义对象

import com.google.gson.Gson;
import com.google.gson.JsonObject;

public class Main {
    public static void main(String[] args) {
        // 创建自定义对象
        CustomObject customObject = new CustomObject("example", 123);

        // 将对象转换为Json
        Gson gson = new Gson();
        String json = gson.toJson(customObject);

        // 添加自定义对象到Json中
        JsonObject jsonObject = gson.fromJson(json, JsonObject.class);
        jsonObject.add("customObject", gson.toJsonTree(customObject));

        // 打印最终的Json
        System.out.println(jsonObject.toString());
    }
}

class CustomObject {
    private String name;
    private int value;

    public CustomObject(String name, int value) {
        this.name = name;
        this.value = value;
    }

    // 省略getter和setter方法
}