src/vs/platform/userDataSync/common/userDataSyncMachines.ts/UserDataSyncMachinesService/readMachinesData
class UserDataSyncMachinesService:	private async readMachinesData(manifest?: IUserDataManifest): Promise<IMachinesData> {
		this.userData = await this.readUserData(manifest);
		const machinesData = this.parse(this.userData);
		if (machinesData.version !== UserDataSyncMachinesService.VERSION) {
			throw new Error(localize('error incompatible', "Cannot read machines data as the current version is incompatible. Please update {0} and try again.", this.productService.nameLong));
		}
		return machinesData;
	}