tagLabel := hook.GetLabels()[label.IoIstioTag.Name]
		ri, revPresent := revisions[rev]
		if revPresent {
			if tagLabel != "" {
				ri.Webhooks = append(ri.Webhooks, &MutatingWebhookConfigInfo{
					Name:     hook.Name,
					Revision: rev,
					Tag:      tagLabel,
				})
			}
		} else {
			revisions[rev] = &RevisionDescription{
				IstioOperatorCRs: []*IstioOperatorCRInfo{},

- [ ] Extensions and Telemetry
- [ ] Security
- [ ] Test and Release
- [ ] User Experience
- [ ] Developer Infrastructure
- [ ] Upgrade
- [ ] Multi Cluster
- [ ] Virtual Machine
- [ ] Control Plane Revisions

**Please check any characteristics that apply to this pull request.**

or any Secondary License (as applicable), including Contributors.

"Derivative Works" shall mean any work, whether in Source Code or other
form, that is based on (or derived from) the Program and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship.

"Modified Works" shall mean any work in Source Code or other form that

}

// GenerateOptions is the group of options needed to generate a tag webhook.
type GenerateOptions struct {
	// Tag is the name of the revision tag to generate.
	Tag string
	// Revision is the revision to associate the revision tag with.
	Revision string
	// WebhookName is an override for the mutating webhook name.
	WebhookName string

}

// podCountByRevision() returns a map of revision->pods, with "<non-Istio>" as the dummy "revision" for uninjected pods
func podCountByRevision(pods []corev1.Pod, expectedRevision string) map[string]revisionCount {
	retval := map[string]revisionCount{}
	for _, pod := range pods {
		revision := extractRevisionFromPod(&pod)
		revisionLabel := revision
		if revision == "" {
			revisionLabel = "<non-Istio>"
		}

      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain

      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain

	overrideHelpStr = `If true, allow revision tags to be overwritten, otherwise reject revision tag updates that
overwrite existing revision tags.`
	revisionHelpStr = "Control plane revision to reference from a given revision tag"
	tagCreatedStr   = `Revision tag %q created, referencing control plane revision %q. To enable injection using this
revision tag, use 'kubectl label namespace <NAMESPACE> istio.io/rev=%s'
`

      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain

      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain