src/vs/platform/userDataSync/common/userDataSyncBackupStoreService.ts/UserDataSyncBackupStoreService/getResourceBackupHome
class UserDataSyncBackupStoreService:	private getResourceBackupHome(profile: IUserDataProfile, resource: SyncResource): URI {
		return joinPath(this.environmentService.userDataSyncHome, ...(profile.isDefault ? [resource] : [profile.id, resource]));
	}