cmd := &cobra.Command{
		Use:   "generate <revision-tag>",
		Short: "Generate configuration for a revision tag to stdout",
		Long: `Create a revision tag and output to the command's stdout. Tag an Istio control plane revision for use with namespace istio.io/rev
injection labels.`,
		Example: `  # Create a revision tag from the "1-8-0" revision
  istioctl tag generate prod --revision 1-8-0 > tag.yaml

  # Apply the tag to cluster

func (tag Tag) IsEmpty() bool {
	return tag.Key == ""
}

// Validate checks this tag.
func (tag Tag) Validate() error {
	if len(tag.Key) == 0 || utf8.RuneCountInString(tag.Key) > 128 {
		return errInvalidTagKey
	}

	if utf8.RuneCountInString(tag.Value) > 256 {
		return errInvalidTagValue
	}

	return nil

)

func (tag Tag) String() string {
	return tag.Key + "=" + tag.Value
}

// IsEmpty returns whether this tag is empty or not.
func (tag Tag) IsEmpty() bool {
	return tag.Key == ""
}

// Validate checks this tag.
func (tag Tag) Validate() error {
	if len(tag.Key) == 0 || utf8.RuneCountInString(tag.Key) > 128 {
		return errInvalidTagKey
	}

							Name:   "istio-revision-tag-wrong",
							Labels: map[string]string{IstioTagLabel: "wrong"},
						},
					},
				},
			},
			namespaces:       corev1.NamespaceList{},
			outputMatches:    []string{},
			skipConfirmation: true,
			error:            "cannot remove tag \"sample\"",
		},
		{
			name: "TestDeleteTagWithDependentNamespace",
			tag:  "match",

			return err
		}
	case !f.Tag.IsEmpty():
		if err := e.EncodeElement(f.Tag, xml.StartElement{Name: xml.Name{Local: "Tag"}}); err != nil {
			return err
		}
	default:
		// Always print Prefix field when both And & Tag are empty
		if err := e.EncodeElement(f.Prefix, xml.StartElement{Name: xml.Name{Local: "Prefix"}}); err != nil {
			return err
		}
	}

func addOperatorInitFlags(cmd *cobra.Command, args *operatorInitArgs) {
	hub, tag := buildversion.DockerInfo.Hub, buildversion.DockerInfo.Tag

	cmd.PersistentFlags().StringVarP(&args.inFilename, "filename", "f", "", filenameFlagHelpStr)
	cmd.PersistentFlags().StringVar(&args.common.hub, "hub", hub, HubFlagHelpStr)
	cmd.PersistentFlags().StringVar(&args.common.tag, "tag", tag, TagFlagHelpStr)

			hub:               "foo.io/istio",
			tag:               "1.2.3",
			imagePullSecrets:  []string{"imagePullSecret1,imagePullSecret2"},
			operatorNamespace: "operator-test-namespace",
			watchedNamespaces: "istio-test-namespace1,istio-test-namespace2",
		},
	}

	cmd := "operator dump --hub " + odArgs.common.hub
	cmd += " --tag " + odArgs.common.tag

package replication

import (
	"encoding/xml"
)

// And - a tag to combine a prefix and multiple tags for replication configuration rule.
type And struct {
	XMLName xml.Name `xml:"And" json:"And"`
	Prefix  string   `xml:"Prefix,omitempty" json:"Prefix,omitempty"`
	Tags    []Tag    `xml:"Tag,omitempty" json:"Tag,omitempty"`
}

var errDuplicateTagKey = Errorf("Duplicate Tag Keys are not allowed")

// isEmpty returns true if Tags field is null

					warnMarker, icpTag, tag)
			} else {
				p.Printf("%s Istio is being downgraded from %s to %s.\n"+revisionWarning+check,
					warnMarker, icpTag, tag)
			}
		}
	}
	return nil
}

// GetTagVersion returns istio tag version
func GetTagVersion(tagInfo string) (string, error) {
	if pkgversion.IsVersionString(tagInfo) {
		tagInfo = pkgversion.TagToVersionStringGrace(tagInfo)
	}

							</Tag>
							<Tag>
								<Key>key2</Key>
								<Value>value2</Value>
							</Tag>
							</And>
						</Filter>`,
			expectedErr: nil,
		},
		{ // Filter with And and multiple Tag tags
			inputXML: ` <Filter>
							<And>
							<Prefix></Prefix>
							<Tag>
								<Key>key1</Key>
								<Value>value1</Value>
							</Tag>
							<Tag>
								<Key>key2</Key>
								<Value>value2</Value>