src/vs/platform/userDataSync/common/userDataSyncService.ts/ManualSyncTask/toSyncResourcePreview
class ManualSyncTask:	private toSyncResourcePreview(syncResource: SyncResource, preview: ISyncResourcePreview): [SyncResource, ISyncResourcePreview] {
		return [
			syncResource,
			{
				isLastSyncFromCurrentMachine: preview.isLastSyncFromCurrentMachine,
				resourcePreviews: preview.resourcePreviews.map(toStrictResourcePreview)
			}
		];
	}