A toggle used with EditorToolbarElementAttribute.
| ussClassName | USS Class Name used to style the EditorToolbarToggle. |
| icon | The icon associated with the toggle. |
| offIcon | The icon associated with the toggle when the value is false. |
| onIcon | The icon associated with the toggle when the value is true. |
| text | The text associated with the toggle. |
| EditorToolbarToggle | 构造函数。 |
| SetValueWithoutNotify | 允许设置值而不接收更改通知（如果有）。 |