src/vs/platform/userDataSync/common/userDataAutoSyncService.ts/UserDataAutoSyncService/productQuality
class UserDataAutoSyncService:	private set productQuality(productQuality: string | undefined) {
		if (productQuality) {
			this.storageService.store(productQualityKey, productQuality, StorageScope.APPLICATION, StorageTarget.MACHINE);
		} else {
			this.storageService.remove(productQualityKey, StorageScope.APPLICATION);
		}
	}