// and overridden at build time.
	if goexp != "" {
		// Create a map of known experiment names.
		names := make(map[string]func(bool))
		rv := reflect.ValueOf(&flags.Flags).Elem()
		rt := rv.Type()
		for i := 0; i < rt.NumField(); i++ {
			field := rv.Field(i)
			names[strings.ToLower(rt.Field(i).Name)] = field.SetBool
		}

		// "regabi" is an alias for all working regabi
		// subexperiments, and not an experiment itself. Doing

	// (meaning those two must have the same layout).
	runtimeTimeTimer := reflect.TypeOf(runtime.TimeTimer{})

	check := func(name string, typ reflect.Type) {
		n1 := runtimeTimeTimer.NumField()
		n2 := typ.NumField()
		if n1 != n2+1 {
			t.Errorf("runtime.TimeTimer has %d fields, want %d (%s has %d fields)", n1, n2+1, name, n2)
			return
		}
		for i := 0; i < n2; i++ {
			f1 := runtimeTimeTimer.Field(i)

	}
	if t.Kind() != Struct {
		panic("reflect.VisibleFields of non-struct type")
	}
	w := &visibleFieldsWalker{
		byName:   make(map[string]int),
		visiting: make(map[Type]bool),
		fields:   make([]StructField, 0, t.NumField()),
		index:    make([]int, 0, 2),
	}
	w.walk(t)
	// Remove all the fields that have been hidden.
	// Use an in-place removal that avoids copying in
	// the common case that there are no hidden fields.
	j := 0

// protobuf field numbers are not accidentally reused by other fields.
func Test_NetworkPolicyRemovedFieldProtobufNumberReservation(t *testing.T) {
	obj := reflect.ValueOf(NetworkPolicy{}).Type()
	for i := 0; i < obj.NumField(); i++ {
		f := obj.Field(i)
		protobufSpec := f.Tag.Get("protobuf")
		if protobufSpec == "" {
			continue
		}

		protobufNum := strings.Split(protobufSpec, ",")[1]
		if protobufNum == "3" {

		// no-op

	case reflect.Struct:
		for i := 0; i < tp.NumField(); i++ {
			f := tp.Field(i)
			if f.PkgPath != "" {
				continue // Ignore unexported fields
			}
			jsonTag := f.Tag.Get("json")
			protoTag := f.Tag.Get("protobuf")
			if len(jsonTag) > 0 || len(protoTag) > 0 {

		str += "<can't iterate on maps>"
		str += "}"
		return str
	case Chan:
		str = typ.String()
		return str
	case Struct:
		t := typ
		v := val
		str += t.String()
		str += "{"
		for i, n := 0, v.NumField(); i < n; i++ {
			if i > 0 {
				str += ", "
			}
			str += valueToString(v.Field(i))
		}
		str += "}"
		return str
	case Interface:
		return typ.String() + "(" + valueToString(val.Elem()) + ")"

		str += "}"
		return str
	case reflect.Chan:
		str = typ.String()
		return str
	case reflect.Struct:
		t := typ
		v := val
		str += t.String()
		str += "{"
		for i, n := 0, v.NumField(); i < n; i++ {
			if i > 0 {
				str += ", "
			}
			str += valueToStringImpl(v.Field(i))
		}
		str += "}"
		return str
	case reflect.Interface:

			}
		}
	case reflect.Interface, reflect.Pointer:
		if obj.IsNil() {
			// TODO: set non-nil value
		} else {
			valueFuzz(obj.Elem())
		}
	case reflect.Struct:
		for i, n := 0, obj.NumField(); i < n; i++ {
			valueFuzz(obj.Field(i))
		}
	case reflect.Map:
		if obj.IsNil() {
			// TODO: set non-nil value
		} else {
			for _, k := range obj.MapKeys() {

	}

	switch v := reflect.Indirect(val); v.Kind() {
	case reflect.Slice:
		for i := 0; i < v.Len(); i++ {
			e := v.Index(i)
			set(e, f(e))
		}
	case reflect.Struct:
		for i := 0; i < v.NumField(); i++ {
			e := v.Field(i)
			set(e, f(e))
		}
	case reflect.Interface:
		e := v.Elem()
		set(v, f(e))
	}
	return val
}

func isWildcard(s string) bool {

		}
		if err := os.Remove(name); err != nil {
			log.Fatal(err)
		}
	}

	// Generate new experiment constant files.
	rt := reflect.TypeOf(&goexperiment.Flags{}).Elem()
	for i := 0; i < rt.NumField(); i++ {
		f := rt.Field(i).Name
		buildTag := "goexperiment." + strings.ToLower(f)
		for _, val := range []bool{false, true} {
			name := fmt.Sprintf("exp_%s_%s.go", strings.ToLower(f), pick(val, "off", "on"))