func Make(t language.Tag) (tag Tag) {
	if region := t.TypeForKey("rg"); len(region) == 6 && region[2:] == "zzzz" {
		if r, err := language.ParseRegion(region[:2]); err == nil {
			tFull := t
			t, _ = t.SetTypeForKey("rg", "")
			// TODO: should we not consider "va" for the language tag?
			var exact1, exact2 bool
			tag.language, exact1 = FromTag(t)
			t.RegionID = r
			tag.locale, exact2 = FromTag(t)

}

// IsGroup returns whether this region defines a collection of regions. This
// includes non-standard definitions from CLDR.
func (r Region) IsGroup() bool {
	if r == 0 {
		return false
	}
	return int(regionInclusion[r]) < len(regionContainment)
}

// Contains returns whether Region c is contained by Region r. It returns true
// if c == r.
func (r Region) Contains(c Region) bool {
	if r == c {
		return true

  // Given a Region associated with the callee and operands from the
  // corresponding callOp, propagate the potentially written decision to the
  // callOp's operands, if the corresponding region's arguments are potentially
  // written resources.
  void PropagatePotentiallyWrittenUpFromCallee(
      Region& region, Operation::operand_range propagate_to);

  // Marks 'resource' as written.

		locality := localityLbEndpoint.Locality
		if locality.Region == "region1" && locality.Zone == "zone1" && locality.SubZone == "subzone1" {
			g.Expect(localityLbEndpoint.Priority).To(Equal(uint32(0)))
		} else if locality.Region == "region1" && locality.Zone == "zone1" && locality.SubZone == "subzone2" {
			g.Expect(localityLbEndpoint.Priority).To(Equal(uint32(1)))
		} else if locality.Region == "region2" {

type allSubtags struct{}

// Regions returns the list of supported regions. As all regions are in a
// consecutive range, it simply returns a slice of numbers in increasing order.
// The "undefined" region is not returned.
func (s allSubtags) Regions() []Region {
	reg := make([]Region, language.NumRegions)
	for i := range reg {
		reg[i] = Region{language.Region(i + 1)}
	}
	return reg
}

      // If the user is not in one of the regions, we are not interested in it.
      // Since all the sub-regions within this region (i.e., regions attached to
      // op's in this region) have themselves gone through lifting, all resource
      // users are expected to be operations in this region and not embedded
      // within other sub-regions attached to ops in this region. So the check

    must represent separate sets of instructions to execute concurrently. In
    order to represent concurrently executed regions with dependencies, multiple
    ParallelExecute ops can be used instead. As so, regions within
    ParallelExecute op must not have control/data dependencies.

    While explicit dependencies between regions are disallowed, ParallelExecute

func (r Region) String() string {
	if r < isoRegionOffset {
		if r == 0 {
			return "ZZ"
		}
		return fmt.Sprintf("%03d", r.M49())
	}
	r -= isoRegionOffset
	return regionISO.Elem(int(r))[:2]
}

// ISO3 returns the 3-letter ISO code of r.
// Note that not all regions have a 3-letter ISO code.
// In such cases this method returns "ZZZ".
func (r Region) ISO3() string {

		task.Regions = append(task.Regions, region)
		task.Goroutines[g.ID] = g
	case EventRegionEnd:
		g := s.gs[ev.Goroutine()]
		r := ev.Region()
		var sd *UserRegionSummary
		if regionStk := g.activeRegions; len(regionStk) > 0 {
			// Pop the top region from the stack since that's what must have ended.
			n := len(regionStk)
			sd = regionStk[n-1]
			regionStk = regionStk[:n-1]
			g.activeRegions = regionStk

		{
			name: "invalid LocalityLoadBalancerSetting specify both failoverPriority and region in failover",
			in: &networking.LocalityLoadBalancerSetting{
				Failover: []*networking.LocalityLoadBalancerSetting_Failover{
					{
						From: "region1",
						To:   "region2",
					},
				},
				FailoverPriority: []string{"topology.kubernetes.io/region"},
			},
			outlier: &networking.OutlierDetection{},
			err:     true,