ssi(ServiceInstances)
        swi(WorkloadInstances)
        se-->ssi
        swi-->ssi
        we-->swi
    end
    kwi-->ssi
    swi-->ksi
```

For the most part this is fairly straight forward. However, we support `ServiceEntry` selecting `Pod`, and `Service` selecting `WorkloadEntry`, which leads to cross-controller communication.

  // MaxUnavailableStatefulSet feature. The field applies to all pods in the range 0 to
  // Replicas-1. That means if there is any unavailable pod in the range 0 to Replicas-1, it
  // will be counted towards MaxUnavailable.
  // +optional
  optional k8s.io.apimachinery.pkg.util.intstr.IntOrString maxUnavailable = 2;
}

// StatefulSet represents a set of pods with consistent identities.
// Identities are defined as:

	registerStringParameter(constants.CNIEventAddress, "/var/run/istio-cni/pluginevent.sock",
		"The UDS server address which CNI plugin will forward ambient pod creation events to")
	registerStringParameter(constants.ZtunnelUDSAddress, "/var/run/ztunnel/ztunnel.sock", "The UDS server address which ztunnel will connect to")

  // MaxUnavailableStatefulSet feature. The field applies to all pods in the range 0 to
  // Replicas-1. That means if there is any unavailable pod in the range 0 to Replicas-1, it
  // will be counted towards MaxUnavailable.
  // +optional
  optional k8s.io.apimachinery.pkg.util.intstr.IntOrString maxUnavailable = 2;
}

// Scale represents a scaling request for a resource.
message Scale {