// tokens it is mounting volume for to do necessary authentication. Kubelet
  // will pass the tokens in VolumeContext in the CSI NodePublishVolume calls.
  // The CSI driver should parse and validate the following VolumeContext:
  // "csi.storage.k8s.io/serviceAccount.tokens": {
  //   "<audience>": {
  //     "token": <token>,
  //     "expirationTimestamp": <expiration timestamp in RFC3339>,

  // respond with a 410 ResourceExpired error together with a continue token. If the client needs a
  // consistent list, it must restart their list without the continue field. Otherwise, the client may
  // send another list request with the token received with the 410 error, the server will respond with

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

// TokenReviewSpec is a description of the token authentication request.
message TokenReviewSpec {
  // Token is the opaque bearer token.
  // +optional
  optional string token = 1;

  // Audiences is a list of the identifiers that the resource server presented

  optional string reportingInstance = 5;

  // action is what action was taken/failed regarding to the regarding object. It is machine-readable.
  // This field cannot be empty for new Events and it can have at most 128 characters.
  optional string action = 6;

  // reason is why the action was taken. It is human-readable.
  // This field cannot be empty for new Events and it can have at most 128 characters.

  // claims in a way that maintains the identity of a pod. Every claim in
  // this list must have at least one matching (by name) volumeMount in one
  // container in the template. A claim in this list takes precedence over
  // any volumes in the template, with the same name.
  // TODO: Define the behavior if a claim already exists with the same name.
  // +optional

  // tokens it is mounting volume for to do necessary authentication. Kubelet
  // will pass the tokens in VolumeContext in the CSI NodePublishVolume calls.
  // The CSI driver should parse and validate the following VolumeContext:
  // "csi.storage.k8s.io/serviceAccount.tokens": {
  //   "<audience>": {
  //     "token": <token>,
  //     "expirationTimestamp": <expiration timestamp in RFC3339>,

  // token, and otherwise should reject the token. The audience defaults to the
  // identifier of the apiserver.
  // +optional
  optional string audience = 1;

  // expirationSeconds is the requested duration of validity of the service
  // account token. As the token approaches expiration, the kubelet volume
  // plugin will proactively rotate the service account token. The kubelet will

message TokenRequestStatus {
  // Token is the opaque bearer token.
  optional string token = 1;

  // ExpirationTimestamp is the time of expiration of the returned token.
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time expirationTimestamp = 2;
}

// TokenReview attempts to authenticate a token to a known user.
// Note: TokenReview requests may be cached by the webhook token authenticator