src/vs/platform/workspaces/electron-main/workspacesHistoryMainService.ts/WorkspacesHistoryMainService/saveRecentlyOpened
class WorkspacesHistoryMainService:	private saveRecentlyOpened(recent: IRecentlyOpened): void {
		const serialized = toStoreData(recent);

		this.stateMainService.setItem(WorkspacesHistoryMainService.recentlyOpenedStorageKey, serialized);
	}