func lastComment(b *ast.BlockStmt, c []*ast.CommentGroup) (i int, last *ast.CommentGroup) {
	if b == nil {
		return
	}
	pos, end := b.Pos(), b.End()
	for j, cg := range c {
		if cg.Pos() < pos {
			continue
		}
		if cg.End() > end {
			break
		}
		i, last = j, cg
	}
	return
}

// classifyExamples classifies examples and assigns them to the Examples field

// R,G,B,A space.
func (p Palette) Index(c Color) int {
	// A batch version of this computation is in image/draw/draw.go.

	cr, cg, cb, ca := c.RGBA()
	ret, bestSum := 0, uint32(1<<32-1)
	for i, v := range p {
		vr, vg, vb, va := v.RGBA()
		sum := sqDiff(cr, vr) + sqDiff(cg, vg) + sqDiff(cb, vb) + sqDiff(ca, va)
		if sum < bestSum {
			if sum == 0 {
				return i
			}
			ret, bestSum = i, sum
		}
	}

	{`^[a-c]+$`, true},
	{`^[a-c]*$`, true},
	{`^(?:a*)$`, true},
	{`^(?:(?:aa)|a)$`, true},
	{`^[a-c]*`, false},
	{`^...$`, true},
	{`^(?:a|(?:aa))$`, true},
	{`^a((b))c$`, true},
	{`^a.[l-nA-Cg-j]?e$`, true},
	{`^a((b))$`, true},
	{`^a(?:(b)|(c))c$`, true},
	{`^a(?:(b*)|(c))c$`, false},
	{`^a(?:b|c)$`, true},
	{`^a(?:b?|c)$`, true},
	{`^a(?:b?|c?)$`, false},
	{`^a(?:b?|c+)$`, true},

	      - name: key1
	        secret: c2VjcmV0IGlzIHNlY3VyZQ==
	- resources:
	  - '*.apps'
	  providers:
	  - aescbc:
	      keys:
	      - name: key2
	        secret: c2VjcmV0IGlzIHNlY3VyZSwgb3IgaXMgaXQ/Cg==
	- resources:
	  - '*.*'
	  providers:
	  - aescbc:
	      keys:
	      - name: key3
	        secret: c2VjcmV0IGlzIHNlY3VyZSwgSSB0aGluaw==
*/
type EncryptionConfiguration struct {
	metav1.TypeMeta

		t.Skip("cgroup v2 not available")
	}
	cg := bytes.TrimPrefix(selfCg, []byte("0::"))
	if len(cg) == len(selfCg) { // No prefix found.
		t.Skipf("cgroup v2 not available (/proc/self/cgroup contents: %q)", selfCg)
	}

	// Need an ability to create a sub-cgroup.
	subCgroup, err := os.MkdirTemp(prefix+string(bytes.TrimSpace(cg)), "subcg-")
	if err != nil {

	      - name: key1
	        secret: c2VjcmV0IGlzIHNlY3VyZQ==
	- resources:
	  - '*.apps'
	  providers:
	  - aescbc:
	      keys:
	      - name: key2
	        secret: c2VjcmV0IGlzIHNlY3VyZSwgb3IgaXMgaXQ/Cg==
	- resources:
	  - '*.*'
	  providers:
	  - aescbc:
	      keys:
	      - name: key3
	        secret: c2VjcmV0IGlzIHNlY3VyZSwgSSB0aGluaw==
*/
type EncryptionConfiguration struct {
	metav1.TypeMeta

}

// Create a cgroup container manager.
func createManager(containerName string) (cgroups.Manager, error) {
	cg := &configs.Cgroup{
		Parent: "/",
		Name:   containerName,
		Resources: &configs.Resources{
			SkipDevices: true,
		},
		Systemd: false,
	}

	return manager.New(cg)
}

type KernelTunableBehavior string

const (
	KernelTunableWarn   KernelTunableBehavior = "warn"

//	WRITE []byte{48, 90, 109, 57, 118, 67, 103, 111, 61} # send "foo\n" (base64: "Zm9vCgo=") on channel '0' (STDIN)
//	READ  []byte{49, 67, 103, 61, 61} # receive "\n" (base64: "Cg==") on channel '1' (STDOUT)
//	CLOSE
const Base64ChannelWebSocketProtocol = "base64.channel.k8s.io"

type codecType int

const (
	rawCodec codecType = iota
	base64Codec
)

type ChannelType int

	b.SetBytes(int64(len(s)))
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		sink = QuoteMeta(s)
	}
}

var compileBenchData = []struct{ name, re string }{
	{"Onepass", `^a.[l-nA-Cg-j]?e$`},
	{"Medium", `^((a|b|[d-z0-9])*(日){4,5}.)+$`},
	{"Hard", strings.Repeat(`((abc)*|`, 50) + strings.Repeat(`)`, 50)},
}

func BenchmarkCompile(b *testing.B) {
	for _, data := range compileBenchData {

// These lines set CFLAGS, CPPFLAGS, CXXFLAGS and LDFLAGS and pkg-config directives
// that affect the way cgo's C code is built.
func (ctxt *Context) saveCgo(filename string, di *Package, cg *ast.CommentGroup) error {
	text := cg.Text()
	for _, line := range strings.Split(text, "\n") {
		orig := line

		// Line is
		//	#cgo [GOOS/GOARCH...] LDFLAGS: stuff
		//
		line = strings.TrimSpace(line)