result, ok := os.LookupEnv(v.Name)
	if !ok {
		result = v.DefaultValue
	}

	b, err := strconv.ParseBool(result)
	if err != nil {
		log.Warnf("Invalid environment variable value `%s`, expecting true/false, defaulting to %v", result, v.DefaultValue)
		b, _ = strconv.ParseBool(v.DefaultValue)
	}

	return b, ok
}

// Get retrieves the value of the environment variable.

		// TODO: treat like decoding {} from JSON with defaulting
		return nil, nil, fmt.Errorf("empty data")
	case len(originalData) < prefixLen || !bytes.Equal(s.prefix, originalData[:prefixLen]):
		return nil, nil, fmt.Errorf("provided data does not appear to be a protobuf message, expected prefix %v", s.prefix)
	case len(originalData) == prefixLen:
		// TODO: treat like decoding {} from JSON with defaulting
		return nil, nil, fmt.Errorf("empty body")
	}

	// Populate the .Token field with a random value if unset
	// We do this at this layer, and not the API defaulting layer
	// because of possible security concerns, and more practically
	// because we can't return errors in the API object defaulting
	// process but here we can.
	for i, bt := range *cfg {
		if bt.Token != nil && len(bt.Token.String()) > 0 {
			continue
		}

// and conversion wrappers to define preferred internal and external versions. In the future,
// as the internal version is used less, callers may instead use a defaulting serializer and
// only convert objects which are shared internally (Status, common API machinery).
//
// Mutators can be passed to change the CodecFactoryOptions before construction of the factory.

type Before struct {
	*api.Service
}
type After struct {
	*api.Service
}

// defaultOnRead sets interlinked fields that were not previously set on read.
// We can't do this in the normal defaulting path because that same logic
// applies on Get, Create, and Update, but we need to distinguish between them.
//
// This will be called on both Service and ServiceList types.

		},
		func(j *core.Binding, c fuzz.Continue) {
			c.Fuzz(&j.ObjectMeta)
			j.Target.Name = c.RandString()
		},
		func(j *core.ReplicationController, c fuzz.Continue) {
			c.FuzzNoCustom(j)

			// match defaulting
			if j.Spec.Template != nil {
				if len(j.Labels) == 0 {
					j.Labels = j.Spec.Template.Labels
				}
				if len(j.Spec.Selector) == 0 {
					j.Spec.Selector = j.Spec.Template.Labels
				}
			}

			SchedulerName:                 v1.DefaultSchedulerName,
		},
	}
	tests := []struct {
		original *extensionsv1beta1.DaemonSet
		expected *extensionsv1beta1.DaemonSet
	}{
		{ // Labels change/defaulting test.
			original: &extensionsv1beta1.DaemonSet{
				Spec: extensionsv1beta1.DaemonSetSpec{
					Template: defaultTemplate,
				},
			},
			expected: &extensionsv1beta1.DaemonSet{
				ObjectMeta: metav1.ObjectMeta{

		for {
			if iter > *roundtrip.FuzzIters {
				if !expectedChanged || changedOnce {
					break
				}
				if iter > 300 {
					t.Errorf("expected %s to trigger defaulting due to fuzzing", gvk)
					break
				}
				// if we expected defaulting, continue looping until the fuzzer gives us one
				// at worst, we will timeout
			}
			iter++

			src, err := scheme.New(gvk)
			if err != nil {
				t.Fatal(err)

	// Use (ServiceAccountSigningKeyFile != "") as a proxy to the user enabling
	// TokenRequest functionality. This defaulting was convenient, but messed up
	// a lot of people when they rotated their serving cert with no idea it was
	// connected to their service account keys. We are taking this opportunity to
	// remove this problematic defaulting.
	if completed.ServiceAccountSigningKeyFile == "" {

	// healthzBindAddress is the IP address and port for the health check server to
	// serve on, defaulting to "0.0.0.0:10256" (if bindAddress is unset or IPv4), or
	// "[::]:10256" (if bindAddress is IPv6).
	HealthzBindAddress string
	// metricsBindAddress is the IP address and port for the metrics server to serve
	// on, defaulting to "127.0.0.1:10249" (if bindAddress is unset or IPv4), or