src/vs/platform/userDataSync/common/userDataSyncIpc.ts/UserDataSyncMachinesServiceChannel/call
class UserDataSyncMachinesServiceChannel:	async call(context: any, command: string, args?: any): Promise<any> {
		switch (command) {
			case 'getMachines': return this.service.getMachines();
			case 'addCurrentMachine': return this.service.addCurrentMachine();
			case 'removeCurrentMachine': return this.service.removeCurrentMachine();
			case 'renameMachine': return this.service.renameMachine(args[0], args[1]);
			case 'setEnablements': return this.service.setEnablements(args);
		}
		throw new Error('Invalid call');
	}