optional string nodeID = 2;

  // topologyKeys is the list of keys supported by the driver.
  // When a driver is initialized on a cluster, it provides a set of topology
  // keys that it understands (e.g. "company.com/zone", "company.com/region").
  // When a driver is initialized on a node, it provides the same topology keys
  // along with values. Kubelet will expose these topology keys as labels
  // on its own node object.

  // +optional
  optional string sessionAffinity = 7;

  // Only applies to Service Type: LoadBalancer.
  // This feature depends on whether the underlying cloud-provider supports specifying
  // the loadBalancerIP when a load balancer is created.
  // This field will be ignored if the cloud-provider does not support the feature.

  // Status is filled in by the server and indicates whether the token can be authenticated.
  // +optional
  optional TokenRequestStatus status = 3;
}

// TokenRequestSpec contains client provided parameters of a token request.
message TokenRequestSpec {
  // Audiences are the intendend audiences of the token. A recipient of a
  // token must identify themself with an identifier in the list of