src/vs/workbench/contrib/notebook/browser/contrib/troubleshoot/layout.ts/TroubleshootController/_update
class TroubleshootController:	private _update() {
		this._localStore.clear();
		this._cellStateListeners.forEach(listener => listener.dispose());

		if (!this._notebookEditor.hasModel()) {
			return;
		}

		this._updateListener();
	}