cases := []struct {
		name string
		ver  string
		want *utilversion.Version
	}{
		{
			name: "jammy nft",
			ver:  "iptables v1.8.7 (nf_tables)",
			want: utilversion.MustParseGeneric("1.8.7"),
		},
		{
			name: "jammy legacy",
			ver:  "iptables v1.8.7 (legacy)",

			want: utilversion.MustParseGeneric("1.8.7"),
		},
		{
			name: "xenial",
			ver:  "iptables v1.6.0",

}

func (rv *RevVerMap) String() string {
	if rv == nil {
		return ""
	}
	var rvPairs []string
	for rev, ver := range *rv {
		if ver == "" {
			ver = "latest"
		}
		rvPairs = append(rvPairs,
			fmt.Sprintf("%s=%s", rev, ver))
	}
	return strings.Join(rvPairs, ",")
}

// Versions returns the Istio versions present in the given RevVerMap.
func (rv *RevVerMap) Versions() IstioVersions {
	if rv == nil {
		return nil

		t.Run(s, func(t *testing.T) {
			ver, err := kubernetesReleaseVersion(s, errorFetcher)
			t.Log("Valid: ", s, ver, err)
			if err != nil {
				t.Errorf("kubernetesReleaseVersion unexpected error for version %q: %v", s, err)
			}
			if ver != s && ver != "v"+s {
				t.Errorf("kubernetesReleaseVersion should return same valid version string. %q != %q", s, ver)
			}
		})
	}
}

			continue
		}
		ver, err := x.getIdx(i)
		if err != nil {
			return "", err
		}
		switch {
		case fi.ExpireRestored:
			ver.ObjectV2.RemoveRestoreHdrs()
			err = x.setIdx(i, *ver)
		case fi.TransitionStatus == lifecycle.TransitionComplete:
			ver.ObjectV2.SetTransition(fi)
			ver.ObjectV2.ResetInlineData()
			err = x.setIdx(i, *ver)
		default:

			rel = rel[:i]
			break
		}
	}

	next := func() (int, bool) {
		for i := 0; i < len(rel); i++ {
			if rel[i] == '.' {
				ver, err := strconv.Atoi(rel[:i])
				rel = rel[i+1:]
				return ver, err == nil
			}
		}
		ver, err := strconv.Atoi(rel)
		rel = ""
		return ver, err == nil
	}
	if major, ok = next(); !ok || rel == "" {
		return
	}
	if minor, ok = next(); !ok || rel == "" {
		return
	}

	tests := []struct {
		name string
		ver  string
		want bool
	}{
		{
			name: "empty",
			ver:  "",
			want: false,
		},
		{
			name: "unknown",
			ver:  "unknown",
			want: false,
		},
		{
			name: "release branch dev",
			ver:  "1.4-dev",
			want: true,
		},
		{
			name: "release",
			ver:  "1.4.5",
			want: true,
		},
		{

				for _, v := range ver {
					v.header.Flags += xlFlags(i)
					newVers = append(newVers, v)
				}
				vMod = append(vMod, newVers)
			}
			merged := mergeXLV2Versions(i, false, 0, vMod...)
			if len(merged) == 0 {
				t.Error("Did not get any results")
				return
			}
			for _, ver := range merged {
				if ver.header.Type == invalidVersionType {
					t.Errorf("Invalid result returned: %v", ver.header)
				}

    }

    private DependencyGraphNode node(Long componentId, String org, String name, String ver, ComponentSelectionReason reason = requested()) {
        def componentMetadata = Stub(ComponentGraphResolveMetadata)
        _ * componentMetadata.moduleVersionId >> DefaultModuleVersionIdentifier.newId(DefaultModuleIdentifier.newId(org, name), ver)

        def componentState = Stub(ComponentGraphResolveState)

			if c == '.' {
				ver = ver[i+1:]
				return
			}
			if '0' <= c && c <= '9' {
				n = n*10 + int(c-'0')
			}
		}
		ver = nil
		return
	}

	major = parseNext()
	minor = parseNext()

	return
}

// SupportSockNonblockCloexec tests if SOCK_NONBLOCK and SOCK_CLOEXEC are supported
// for socket() system call, returns true if affirmative.
var SupportSockNonblockCloexec = sync.OnceValue(func() bool {

            TreeSet<Version> snapshots = new TreeSet<>(Collections.reverseOrder());

            for (String ver : versions.versions.keySet()) {
                try {
                    Version v = versionScheme.parseVersion(ver);

                    if (ver.endsWith("-SNAPSHOT")) {
                        snapshots.add(v);
                    } else {
                        releases.add(v);