code: func (cs *CSCloud) GetZone(ctx context.Context) (cloudprovider.Zone, error) {
  	zone := cloudprovider.Zone{}
  
  	if cs.zone == "" {
  		hostname, err := os.Hostname()
  		if err != nil {
  			return zone, fmt.Errorf("failed to get hostname for retrieving the zone: %v", err)
  		}
  
  		instance, count, err := cs.client.VirtualMachine.GetVirtualMachineByName(hostname)
  		if err != nil {
  			if count == 0 {
  				return zone, fmt.Errorf("could not find instance for retrieving the zone: %v", err)
  			}
  			return zone, fmt.Errorf("error getting instance for retrieving the zone: %v", err)
  		}
  
  		cs.zone = instance.Zonename
  	}
  
  	klog.V(2).Infof("Current zone is %v", cs.zone)
  	zone.FailureDomain = cs.zone
  	zone.Region = cs.zone
  
  	return zone, nil
  }
docs: // GetZone returns the Zone containing the region that the program is running in.