| key | PlayableBinding 中的源对象。 |
| value | 要绑定到键的对象。 |
通过 PlayableBinding 设置引用对象的绑定。
Use this method to associate assets to objects loaded in the scene. For example, use SetGenericBinding to bind a Timeline track to a GameObject or Component.
If the value is set to null, the source object is bound to null and the dependency between the PlayableDirector and the source object is kept.