unity运行时保存预制物

预制物体在运行是给子级添加物体后进行保存，下次运行添加的物体依然存在

using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

public class savePrefab : MonoBehaviour
{
    

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.A))
        {
            Go();
        }
    }

    void Go()
    {
        string localPath = "Assets/Resources/prefab/" + this.gameObject.name + ".prefab";
         PrefabUtility.SaveAsPrefabAsset(this.gameObject, localPath);
    }
    

}

将脚本挂在预制物体上，路径自己选择。