return framework.AsStatus(err)
	}
	logger.V(5).Info("Success binding volumes for pod", "pod", klog.KObj(pod))
	return nil
}

// Unreserve clears assumed PV and PVC cache.
// It's idempotent, and does nothing if no cache found for the given pod.
func (pl *VolumeBinding) Unreserve(ctx context.Context, cs *framework.CycleState, pod *v1.Pod, nodeName string) {
	s, err := getStateData(cs)
	if err != nil {
		return

	// remounted to reflect changes in the referencing pod. Atomically updating
	// volumes, depend on this to update the contents of the volume.
	// All volume mounting calls should be idempotent so a second mount call for
	// volumes that do not need to update contents should not fail.

	checkPos(bpos3, "fileB:1:4")
	checkNumFiles(2)

	// After removal, queries on fileA fail.
	fset.RemoveFile(a)
	checkPos(apos3, "-")
	checkPos(bpos3, "fileB:1:4")
	checkNumFiles(1)

	// idempotent / no effect
	fset.RemoveFile(a)
	checkPos(apos3, "-")
	checkPos(bpos3, "fileB:1:4")
	checkNumFiles(1)
}

func TestFileAddLineColumnInfo(t *testing.T) {
	const (
		filename = "test.go"

     * `ID > lastGoodStreamId` on a new connection.  In- flight streams with
     * `ID <= lastGoodStreamId` can only be replayed on a new connection if they are idempotent.
     *
     * @param lastGoodStreamId the last stream ID the peer processed before sending this message. If
     *     [lastGoodStreamId] is zero, the peer processed no frames.

		key := r.newKey()

		oldSha, found := s.shas[key]
		if !found || oldSha != r.sha {
			scope.Debugf("KubeSource.ApplyContent: Set: %v/%v", r.schema.GroupVersionKind(), r.fullName())
			// apply is idempotent, but configstore is not, thus the odd logic here
			_, err := s.inner.Update(*r.config)
			if err != nil {
				_, err = s.inner.Create(*r.config)
				if err != nil {

// request is idempotent and either has no body or has its [Request.GetBody]
// defined. HTTP requests are considered idempotent if they have HTTP methods
// GET, HEAD, OPTIONS, or TRACE; or if their [Header] map contains an
// "Idempotency-Key" or "X-Idempotency-Key" entry. If the idempotency key
// value is a zero-length slice, the request is treated as idempotent but the
// header is not sent on the wire.

//
// For most messages, the message is marshalled using their marshal method,
// since their wire representation is idempotent. For clientHelloMsg and
// serverHelloMsg, we store the original wire representation of the message and
// use that for hashing, since unmarshal/marshal are not idempotent due to
// extension ordering and other malleable fields, which may cause differences
// between what was received and what we marshal.

func IstioUserAgent() string {
	return adjustCommand(os.Args[0]) + "/" + istioversion.Info.Version
}

// SetRestDefaults is a helper function that sets default values for the given rest.Config.
// This function is idempotent.
func SetRestDefaults(config *rest.Config) *rest.Config {
	if config.GroupVersion == nil || config.GroupVersion.Empty() {
		config.GroupVersion = &corev1.SchemeGroupVersion
	}
	if len(config.APIPath) == 0 {

  // if the object being admitted is modified by other admission plugins after the initial webhook call.
  // Webhooks that specify this option *must* be idempotent, able to process objects they previously admitted.
  // Note:
  // * the number of additional invocations is not guaranteed to be exactly one.

		case "GET", "HEAD", "OPTIONS", "TRACE":
			return true
		}
		// The Idempotency-Key, while non-standard, is widely used to
		// mean a POST or other request is idempotent. See
		// https://golang.org/issue/19943#issuecomment-421092421
		if r.Header.has("Idempotency-Key") || r.Header.has("X-Idempotency-Key") {
			return true
		}
	}
	return false
}