| binding | 要修改的动画剪辑曲线的描述。 |
| modification | 要修改的对象属性。 |
| keepPrefabOverride | 指示当目标对象是预制件的实例时，是否保留修改。 |
将属性标记为当前正在动画化。
This method uses the animation recording system to add a property to the Animation mode snapshot. A property is added when the user modifies its value through scripting, in the Inspector window, and so on.