ic["Istio kube.Client"]
    ikc["Istio kclient.Client"]
    ikrt["Istio krt.Collection"]
    ikrt--"Builds on"-->ikc--"Builds on"-->ic--"Builds on"-->kcg
```

**`kube.Client`** is a fairly light wrapper around Kubernetes clients, but offers quite a few benefits.
Istio consumes _many_ different types of clients (at the time of writing, 7), as well as informers for each of these.

  //
  // Use PersistentVolumeClaim or one of the vendor-specific
  // APIs for volumes that persist for longer than the lifecycle
  // of an individual pod.
  //
  // Use CSI for light-weight local ephemeral volumes if the CSI driver is meant to
  // be used that way - see the documentation of the driver for
  // more information.
  //
  // A pod can use both types of ephemeral volumes and

)

// Values should try to use sendmail-style values as in <sysexits.h>
// See e.g. https://man.openbsd.org/sysexits.3
// or `less /usr/includes/sysexits.h` if you're on Linux
//
// Picking the right range is tricky--there are a lot of reserved ones (see
// https://www.tldp.org/LDP/abs/html/exitcodes.html#EXITCODESREF) and then some
// used by convention (see sysexits).
//

		err = drc[j].RouteConfig.UnmarshalTo(r)
		if err != nil {
			return false
		}
		return name < r.Name
	})

	// In Istio 1.5, it is not enough just to sort the routes.  The virtual hosts
	// within a route might have a different order.  Sort those too.
	for i := range drc {
		route := &route.RouteConfiguration{}
		err = drc[i].RouteConfig.UnmarshalTo(route)
		if err != nil {
			return nil, err
		}

  // The CSI driver is responsible for parsing and validating the information passed in as VolumeContext.
  //
  // The following VolumeConext will be passed if podInfoOnMount is set to true.
  // This list might grow, but the prefix will be used.
  // "csi.storage.k8s.io/pod.name": pod.Name
  // "csi.storage.k8s.io/pod.namespace": pod.Namespace
  // "csi.storage.k8s.io/pod.uid": string(pod.UID)

     file or files, that is not Covered Software.

1.8. “License”

     means this document.

1.9. “Licensable”

     means having the right to grant, to the maximum extent possible, whether at the
     time of the initial grant or subsequently, any and all of the rights conveyed by
     this License.

1.10. “Modifications”

     means any of the following:

  //
  // - In: the requirement is satisfied if at least one container exit code
  //   (might be multiple if there are multiple containers not restricted
  //   by the 'containerName' field) is in the set of specified values.
  // - NotIn: the requirement is satisfied if at least one container exit code
  //   (might be multiple if there are multiple containers not restricted

     separate file or files, that is not Covered Software.

1.8. "License"

     means this document.

1.9. "Licensable"

     means having the right to grant, to the maximum extent possible, whether
     at the time of the initial grant or subsequently, any and all of the
     rights conveyed by this License.

1.10. "Modifications"

     means any of the following:

  // The CSI driver is responsible for parsing and validating the information passed in as VolumeContext.
  //
  // The following VolumeConext will be passed if podInfoOnMount is set to true.
  // This list might grow, but the prefix will be used.
  // "csi.storage.k8s.io/pod.name": pod.Name
  // "csi.storage.k8s.io/pod.namespace": pod.Namespace
  // "csi.storage.k8s.io/pod.uid": string(pod.UID)

  //
  // If wildcard is present, the validation rule will ensure resources do not
  // overlap with each other.
  //
  // Depending on the enclosing object, subresources might not be allowed.
  // Required.
  // +listType=atomic
  repeated string resources = 3;

  // scope specifies the scope of this rule.
  // Valid values are "Cluster", "Namespaced", and "*"