unity_stuff.cs

// find a game object in the active scene
using System.Linq;
GameObject worldGameObject =
    GameObject.FindGameObjectsWithTag("World").ToList().Find(o => o.scene == activeScene);
if (worldGameObject != null)
{
    Debug.Log("SetTrigger: SceneExit" + worldGameObject.name);
    worldGameObject.GetComponent<Animator>().SetTrigger("SceneExit");
}
else
{
    Debug.Log("Did not find a world game object in active scene." + activeScene.name);
}