src/vs/workbench/services/userDataSync/browser/userDataSyncWorkbenchService.ts/UserDataSyncPreview/updateResources
class UserDataSyncPreview:	private updateResources(): void {
		const newResources = this.toUserDataSyncResourceGroups(
			(this.manualSync?.preview || [])
				.map(([syncResource, syncResourcePreview]) =>
				([
					syncResource,
					syncResourcePreview.resourcePreviews
				]))
		);
		if (!equals(newResources, this._resources, (a, b) => isEqual(a.local, b.local) && a.mergeState === b.mergeState)) {
			this._resources = newResources;
			this._onDidChangeResources.fire(this.resources);
		}
	}