| obj | The Unity Object that is to be marked as the main object. |
Specifies which object in the asset file should become the main object of the import opperation.
This method allows you to specify which object is to be concidered as the main object and all other objects in the asset become children of the main object.
Note:
Before invoking this method, the object that is passed as the argument, must first be added with AddObjectToAsset.
If this method is not called, then one of the objects added throught AddObjectToAsset is automaticaly promoted as the main object.
If GameObjects are added throught AddObjectToAsset, then SetMainObject must refer to one of these GameObjects: passing a different type of object will have the selection ignored and one of the GameObjects will be chosen as the main object.