// +optional
  optional k8s.io.api.authentication.v1.UserInfo userInfo = 1;
}

// TokenReview attempts to authenticate a token to a known user.
// Note: TokenReview requests may be cached by the webhook token authenticator
// plugin in the kube-apiserver.
message TokenReview {
  // Standard object's metadata.

                            of the authorized client certificates.
                          items:
                            type: string
                          type: array
                        verifyCertificateSpki:
                          description: An optional list of base64-encoded SHA-256
                            hashes of the SPKIs of authorized client certificates.

	// NamespaceOrDefault returns the namespace specified by the user, or the default namespace if none was specified
	NamespaceOrDefault(namespace string) string
}

type instance struct {
	// clients are cached clients for each revision
	clients map[string]kube.CLIClient
	RootFlags
}

func newKubeClientWithRevision(kubeconfig, configContext, revision string) (kube.CLIClient, error) {

	}

	p.addToCacheUnderLock(uid, workload)
	return workload.Netns
}

// Update the cache with the given uid and nspath. Return the Netns for the given uid.
// If uid is already present, a cached Netns is returned, and the given nspath is ignored.
func (p *podNetnsCache) Get(uid string) Netns {
	// lock current snapshot pod map
	p.mu.RLock()
	defer p.mu.RUnlock()
	if info, f := p.currentPodCache[uid]; f {

}

func GetFd(f fs.File) (uintptr, error) {
	if fdable, ok := f.(interface{ Fd() uintptr }); ok {
		return fdable.Fd(), nil
	}

	return 0, fmt.Errorf("unable to get fd")
}

/// mostly copy pasted from spire below:

// regexes listed here have to exclusively match a cgroup path
// the regexes must include two named groups "poduid" and "containerid"

  // `kind` indicates which one of the other fields is non-empty.
  // Required
  // +unionDiscriminator
  optional string kind = 1;

  // `user` matches based on username.
  // +optional
  optional UserSubject user = 2;

  // `group` matches based on user group name.
  // +optional
  optional GroupSubject group = 3;

  // `serviceAccount` matches ServiceAccounts.
  // +optional

  // `kind` indicates which one of the other fields is non-empty.
  // Required
  // +unionDiscriminator
  optional string kind = 1;

  // `user` matches based on username.
  // +optional
  optional UserSubject user = 2;

  // `group` matches based on user group name.
  // +optional
  optional GroupSubject group = 3;

  // `serviceAccount` matches ServiceAccounts.
  // +optional

                            of the authorized client certificates.
                          items:
                            type: string
                          type: array
                        verifyCertificateSpki:
                          description: An optional list of base64-encoded SHA-256
                            hashes of the SPKIs of authorized client certificates.

            "reducers": []
          }
        }
      ],
      "pluginVersion": "10.1.5"
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "fill": 1,
      "gridPos": {
        "h": 9,
        "w": 24,
        "x": 0,

  // If set to false, pod information will not be passed on mount.
  // Default is false.
  //
  // The CSI driver specifies podInfoOnMount as part of driver deployment.
  // If true, Kubelet will pass pod information as VolumeContext in the CSI NodePublishVolume() calls.
  // The CSI driver is responsible for parsing and validating the information passed in as VolumeContext.
  //