src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts/NotebookEditorWidget/changeModelDecorations
class NotebookEditorWidget:	changeModelDecorations<T>(callback: (changeAccessor: IModelDecorationsChangeAccessor) => T): T | null {
		return this.viewModel?.changeModelDecorations<T>(callback) || null;
	}