src/vs/platform/userDataSync/common/userDataSyncServiceIpc.ts/UserDataSyncChannelClient/getMachineId
class UserDataSyncChannelClient:	async getMachineId(resource: SyncResource, syncResourceHandle: ISyncResourceHandle): Promise<string | undefined> {
		return this.channel.call<string | undefined>('getMachineId', [resource, syncResourceHandle]);
	}