interface in UnityEngine.Experimental.UIElements
マニュアルに切り替えるInterface for controls that hold a value and can notify when it is changed by user input.
| value | The Value held by the control. |
| OnValueChanged | Registers this callback to receive ChangeEvent<T> when value was changed by user input. |
| SetValueAndNotify | Set the value and, if different, notifies registers callbacks with a ChangeEvent<T> |