Get/Restore Monaco editor Undo&Redo stack

I want to create a system to store the Undo&Redo stack of the Monaco editor.

Why?: I have a Monaco instance where I do several changes. Then I have to dispose that instance and open a new one. Here, I want to restore the same stack state that I had in the previous instance.

Question: How can I get and restore the Undo&Redo stack? (Serialize it)

UPDATE: The model records edits in its own structure. However, we don't have a direct access through its API. The next example seems to work but it keeps everything in memory. I would like to have a way where I could serialize it.

var model = editorInstance.getModel();
var viewState = editorInstance.saveViewState();

//Destroy your instance for whatever reason
editorInstance.dispose();

//When you create the new instance load the model that you saved
var newInstance = monaco.editor.create(elem, options);
newInstance.setModel(model);
newInstance.restoreViewState(viewState);

Start with the editorInstance methods named in the report: getModel(), saveViewState(), dispose(), create(), setModel(), and restoreViewState(). Determine whether the Undo&Redo stack can be serialized and restored across disposal; done means the stack survives recreation without retaining the original model in memory.