src/vs/workbench/contrib/webview/browser/webview.ts/WebviewOriginStore/constructor
class WebviewOriginStore:	constructor(
		rootStorageKey: string,
		@IStorageService storageService: IStorageService,
	) {
		this._memento = new Memento(rootStorageKey, storageService);
		this._state = this._memento.getMemento(StorageScope.APPLICATION, StorageTarget.MACHINE);
	}