defer userRegion(id, regionEndCode, regionType)
	fn()
}

// StartRegion starts a region and returns it.
// The returned Region's [Region.End] method must be called
// from the same goroutine where the region was started.
// Within each goroutine, regions must nest. That is, regions started
// after this region must be ended before this region can be ended.
// Recommended usage is
//

            String region = matcher.group(2);
            String key = matcher.group(4);
            Region derivedRegion;
            if (region.equals("external-1")) {
                derivedRegion = Region.getRegion(Regions.US_EAST_1);
            } else {
                derivedRegion = RegionUtils.getRegion(region);
            }

            this.region = Optional.of(derivedRegion);

    // `tf.IfRegion` op and `scf_then_or_else_region` is the `then` or `else`
    // region of the new `scf.if` op. Further, `tf_if_region_return_type` is the
    // list of return types of the `tf.IfRegion` op.
    auto createScfThenOrElse = [](Region& tf_then_or_else_region,
                                  Region& scf_then_or_else_region,
                                  TypeRange tf_if_region_return_type,

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
}

                           bool passthru_extra_args, int num_loop_carried,
                           const llvm::SetVector<Value>& extern_values,
                           const SmallVectorImpl<Type>& types, Location loc) {
  auto func = CreateOutlineFunc(name, region, passthru_extra_args,
                                num_loop_carried, extern_values, types, loc);
  OpBuilder b(region);

    // each resource type result
    func.walk([&](Operation* op) {
      // For all attached regions, assign ID to the region arguments.
      for (Region& region : op->getRegions()) {
        for (auto region_arg : TF::filter_resources(region.getArguments())) {
          InFlightDiagnostic diag = op->emitRemark("Region #")
                                    << region.getRegionNumber() << ", Arg #"

	}

	cred.scope.region = credElements[1]
	// Verify if region is valid.
	sRegion := cred.scope.region
	// Region is set to be empty, we use whatever was sent by the
	// request and proceed further. This is a work-around to address
	// an important problem for ListBuckets() getting signed with
	// different regions.
	if region == "" {
		region = sRegion
	}

  // 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.

				} else if t.RegionID != 0 {
					count := 0
					goodScript := true
					tt := t
					for _, x := range list {
						// We visit all entries for which the script was not
						// defined, including the ones where the region was not
						// defined. This allows for proper disambiguation within
						// regions.
						if x.flags&scriptInFrom == 0 && t.RegionID.Contains(Region(x.region)) {
							tt.RegionID = Region(x.region)

	return sysAllocOS(n)
}

// sysUnused transitions a memory region from Ready to Prepared. It notifies the
// operating system that the physical pages backing this memory region are no
// longer needed and can be reused for other purposes. The contents of a
// sysUnused memory region are considered forfeit and the region must not be
// accessed again until sysUsed is called.
func sysUnused(v unsafe.Pointer, n uintptr) {