src/vs/workbench/contrib/notebook/browser/viewModel/baseCellViewModel.ts/BaseCellViewModel/saveTransientState
class BaseCellViewModel:	private saveTransientState() {
		if (!this._textEditor || !this._textEditor.hasModel()) {
			return;
		}

		this._editorTransientState = readTransientState(this._textEditor.getModel(), this._codeEditorService);
	}