Open the Example1.scene; do the following:
- Drag and drop the "Dict" script on top of the "Dict" object.
- Press Ctrl-S to save the scene.

- In a text editor, open "Resources/Dict.asset".
- Notice that:
- the _values field is serialized as a reference to a scene object, using its original fileID
Example: _values: - {fileID: 400000} (but you could as well have a fileID of 0).
However, the corresponding object is not serialized inside the asset (despite having been added via AddObjectToAsset (cf Dict.cs)).