type ControlPlaneOptions struct {
	// Revision is the istio.io/rev control plane revision
	Revision string
}

// AttachControlPlaneFlags attaches control-plane flags to a Cobra command.
// (Currently just --revision)
func (o *ControlPlaneOptions) AttachControlPlaneFlags(cmd *cobra.Command) {
	cmd.PersistentFlags().StringVarP(&o.Revision, "revision", "r", "",
		"Control plane revision")

    headers = {
        "Origin": "https://localhost.tiangolo.com",
        "Access-Control-Request-Method": "GET",
        "Access-Control-Request-Headers": "X-Example",
    }
    response = client.options("/", headers=headers)
    assert response.status_code == 200, response.text
    assert response.text == "OK"
    assert (
        response.headers["access-control-allow-origin"]
        == "https://localhost.tiangolo.com"
    )

                                        <la:errors property="appValue"/>
                                        <la:textarea styleId="appValue" property="appValue"
                                                     styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">

                                    <div class="col-sm-9">
                                        <la:errors property="name"/>
                                        <la:text styleId="name" property="name" styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">

                                    <div class="col-sm-9">
                                        <la:errors property="term"/>
                                        <la:text styleId="term" property="term" styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">

  moment.locale(lang);
  $("input.form-control.date")
    .daterangepicker({
      autoUpdateInput: false,
      timePicker: false,
      singleDatePicker: true,
      locale: {
        format: "YYYY-MM-DD"
      }
    })
    .on("apply.daterangepicker", function(ev, picker) {
      $(this).val(picker.startDate.format("YYYY-MM-DD"));
    });
  $("input.form-control.daterange")
    .daterangepicker({

                                    <div class="col-sm-9">
                                        <la:errors property="name"/>
                                        <la:text styleId="name" property="name" styleClass="form-control"/>
                                    </div>
                                </div>
                                <div class="form-group row">

  # (Select a specific control plane in an in-cluster canary Istio configuration.)
  istioctl x internal-debug syncz --xds-label istio.io/rev=default
`,
		RunE: func(c *cobra.Command, args []string) error {
			kubeClient, err := ctx.CLIClientWithRevision(opts.Revision)
			if err != nil {
				return err
			}
			if len(args) == 0 {

    val headers = headersOf("Cache-Control", "max-age=12", "Pragma", "must-revalidate", "Pragma", "public")
    val cacheControl = parse(headers)
    assertThat(cacheControl.toString()).isEqualTo("max-age=12, public, must-revalidate")
  }

  @Test
  fun parseCacheControlHeaderValueIsRetained() {
    val value = "max-age=12"
    val headers = headersOf("Cache-Control", value)
    val cacheControl = parse(headers)

  # (Certificates must be obtained before this step.  The --cert-dir flag lets istioctl bypass the Kubernetes API server.)
  istioctl ps --xds-address istio.example.com:15012 --cert-dir ~/.istio-certs

  # Retrieve proxy status information via XDS from specific control plane in multi-control plane in-cluster configuration