src/vs/platform/userDataSync/common/extensionsSync.ts/AbstractExtensionsInitializer/parseExtensions
class AbstractExtensionsInitializer:	protected async parseExtensions(remoteUserData: IRemoteUserData): Promise<ISyncExtension[] | null> {
		return remoteUserData.syncData ? await parseAndMigrateExtensions(remoteUserData.syncData, this.extensionManagementService) : null;
	}