public static class WL816n_Open
{
    public static void Run()
    {
        UnityEditor.SceneManagement.EditorSceneManager.OpenScene(
            "Assets/Scenes/InGame.unity", UnityEditor.SceneManagement.OpenSceneMode.Single);
        UnityEngine.Debug.Log("[816n] InGame opened, active=" + UnityEngine.SceneManagement.SceneManager.GetActiveScene().name);
    }
}