LogicalResult IslandOp::fold(FoldAdaptor,
                             llvm::SmallVectorImpl<OpFoldResult> &results) {
  // This folds IslandOps with no inner ops, one control operand and no data
  // results. The single control operand is forwarded to the IslandOp control
  // result users.
  if (getNumOperands() != 1 || getNumResults() != 1 ||
      !HasSingleOpInBlock<YieldOp>(&GetBody()))
    return failure();

For instance

	preflight     	Run control-plane pre-flight checks
	certs         	Generates all PKI assets necessary to establish the control plane
		/ca             Generates a self-signed Kubernetes CA to provision identities for Kubernetes components
		/apiserver      Generates an API server serving certificate and key
		...
	kubeconfig		Generates all kubeconfig files necessary to establish the control plane

                                              readonly><la:message
                                            key="labels.system_info_system_properties_does_not_exist"/></textarea>
                            </c:if>
                            <c:if test="${!empty fessPropItems}">
									<textarea id="fessPropData" class="systemInfoData form-control"

		URL. See https://golang.org/ref/mod#authenticating.
	GOTOOLCHAIN
		Controls which Go toolchain is used. See https://go.dev/doc/toolchain.
	GOTMPDIR
		The directory where the go command will write
		temporary source files, packages, and binaries.
	GOVCS
		Lists version control commands that may be used with matching servers.
		See 'go help vcs'.
	GOWORK

               tf_executor.yield
             }
             tf_executor.fetch %island : !tf_executor.control
          }
          "tf.Yield"() : () -> ()
        }) {is_stateless = false} : (tensor<i1>) -> ()
      tf_executor.yield
    }
    tf_executor.fetch %island : !tf_executor.control
  }
  func.return
}

// Test propagation through WhileRegion (inlined calls)

{\n  display: block;\n}\n\n.was-validated .custom-control-input:valid ~ .custom-control-label, .custom-control-input.is-valid ~ .custom-control-label {\n  color: #28a745;\n}\n\n.was-validated .custom-control-input:valid ~ .custom-control-label::before, .custom-control-input.is-valid ~ .custom-control-label::before {\n  border-color: #28a745;\n}\n\n.was-validated .custom-control-input:valid:checked ~ .custom-control-label::before, .custom-control-input.is-valid:checked ~ .custom-control-label::before...

// joining an additional control plane instance and if the node is ready to preflight
func checkIfReadyForAdditionalControlPlane(initConfiguration *kubeadmapi.ClusterConfiguration, hasCertificateKey bool) error {
	// blocks if the cluster was created without a stable control plane endpoint
	if initConfiguration.ControlPlaneEndpoint == "" {

		- 'crictl --runtime-endpoint {{ .Socket }} logs CONTAINERID'
	`)))
)

// NewWaitControlPlanePhase is a hidden phase that runs after the control-plane and etcd phases
func NewWaitControlPlanePhase() workflow.Phase {
	phase := workflow.Phase{
		Name:  "wait-control-plane",
		Short: "Wait for the control plane to start",
		// TODO: unhide this phase once WaitForAllControlPlaneComponents goes GA:
		// https://github.com/kubernetes/kubeadm/issues/2907

  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({

### Install Control plane

This can run in any cluster. A mesh should have at least one cluster should run Pilot or equivalent XDS server,
and it is recommended to have Pilot running in each region and in multiple availability zones for multi cluster.

```bash
iop istio-control istio-discovery $IBASE/istio-control/istio-discovery \
            --set global.istioNamespace=istio-system