PrefabUtility

描述：可用于任何预制件相关操作的实用程序类。
参考源：https://docs.unity.cn/cn/2019.4/ScriptReference/PrefabUtility.html

InstantiatePrefab

描述：将给定场景中的给定预制件实例化。

GameObject o = PrefabUtility.InstantiatePrefab(Selection.activeObject as GameObject) as GameObject;

public static Object InstantiatePrefab (Object assetComponentOrGameObject);
public static Object InstantiatePrefab (Object assetComponentOrGameObject, 
SceneManagement.Scene destinationScene);