return value
	}
	return fallback
}

func setEnv(key, value string, t *testing.T) {
	t.Helper()
	err := os.Setenv(key, value)
	if err != nil {
		t.Fatalf("Couldn't set environment variable, err: %v", err)
	}
}

func mktemp(dir, prefix string, t *testing.T) string {
	t.Helper()
	tempDir, err := os.MkdirTemp(dir, prefix)
	if err != nil {

}

func ipstr(ipv6 bool) string {
	if ipv6 {
		return "ipv6"
	}
	return "ipv4"
}

func compareToGolden(t *testing.T, ipv6 bool, name string, actual []string) {
	t.Helper()
	gotBytes := []byte(strings.Join(actual, "\n"))
	goldenFile := filepath.Join("testdata", name+".golden")
	if ipv6 {
		goldenFile = filepath.Join("testdata", name+"_ipv6.golden")
	}

	ZtunnelInboundPort          = 15008
	ZtunnelOutboundPort         = 15001
	ZtunnelInboundPlaintextPort = 15006
	ProbeIPSet                  = "istio-inpod-probes"
)

var log = istiolog.RegisterScope("iptables", "iptables helper")

type Config struct {
	RestoreFormat     bool `json:"RESTORE_FORMAT"`
	TraceLogging      bool `json:"IPTABLES_TRACE_LOGGING"`
	EnableInboundIPv6 bool `json:"ENABLE_INBOUND_IPV6"`

func mustSelect(t test.Failer, selector map[string]string, labels map[string]string) {
	t.Helper()
	kselector := labels2.Set(selector).AsSelectorPreValidated()
	if !kselector.Matches(labels2.Set(labels)) {
		t.Fatalf("%v does not select %v", selector, labels)
	}
}

func mustNotSelect(t test.Failer, selector map[string]string, labels map[string]string) {
	t.Helper()
	kselector := labels2.Set(selector).AsSelectorPreValidated()

			verifyTestcaseOutput(t, Cmd(cli.NewFakeContext(nil)), c)
		})
	}
}

func verifyTestcaseOutput(t *testing.T, cmd *cobra.Command, c testcase) {
	t.Helper()

	var out bytes.Buffer
	cmd.SetArgs(c.args)
	cmd.SetOut(&out)
	cmd.SetErr(&out)
	cmd.SilenceUsage = true
	if c.namespace != "" {
		namespace = c.namespace
	}

	fErr := cmd.Execute()

		msg := exprpb.Type{TypeKind: &exprpb.Type_Dyn{Dyn: &emptypb.Empty{}}}
		return msg.ProtoReflect().Type(), nil
	}
	return typ, nil
}

// Wrapper is a wrapper around the Envoy ConfigDump
// It has extra helper functions for handling any/struct/marshal protobuf pain
type Wrapper struct {
	*admin.ConfigDump
}

// UnmarshalJSON is a custom unmarshaller to handle protobuf pain
func (w *Wrapper) UnmarshalJSON(b []byte) error {

				assert.NoError(t, err)
			}
			verifyExecTestOutput(t, DebugCommand(ctx), c)
		})
	}
}

func verifyExecTestOutput(t *testing.T, cmd *cobra.Command, c execTestCase) {
	t.Helper()

	var out bytes.Buffer
	cmd.SetArgs(c.args)
	cmd.SilenceUsage = true
	cmd.SetOut(&out)
	cmd.SetErr(&out)

	fErr := cmd.Execute()
	output := out.String()

	t.Helper()
	path := mustGetPath(t, obj, "webhooks")
	by, err := json.Marshal(path)
	if err != nil {
		t.Fatal(err)
	}
	var mwh []v1.MutatingWebhook
	if err := json.Unmarshal(by, &mwh); err != nil {
		t.Fatal(err)
	}
	return mwh
}

func getWebhooks(t *testing.T, setFlags string, webhookName string) []v1.MutatingWebhook {
	t.Helper()

			verifyProfileDiffCommandCaseOutput(t, c, by.String(), err)
		})
	}
}

func verifyProfileDiffCommandCaseOutput(t *testing.T, c profileDiffTestcase, output string, fErr error) {
	t.Helper()

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for 'istioctl %s'\n got %v\nwant: %v", c.args, output, c.expectedString)
	}

  // +optional
  repeated HTTPHeader httpHeaders = 5;
}

// HTTPHeader describes a custom header to be used in HTTP probes
message HTTPHeader {
  // The header field name
  optional string name = 1;

  // The header field value
  optional string value = 2;
}

// HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the