The RestoreState method is a static method of the Editor.EditorScene class. It is used to restore the state of the editor scene to a previously saved state. This method is asynchronous and is marked with the AsyncStateMachineAttribute, indicating that it is part of an asynchronous state machine.

To use the RestoreState method, simply call it from the Editor.EditorScene class. Since it is a static method, you do not need to instantiate the class. This method does not take any parameters and does not return a value.