// If the referenced resource does not exist, this binding is considered invalid and will be ignored
  // Required.
  optional string policyName = 1;

  // ParamRef specifies the parameter resource used to configure the admission control policy.
  // It should point to a resource of the type specified in ParamKind of the bound ValidatingAdmissionPolicy.

  // It is entirely possible to get an error and be able to continue determine authorization status in spite of it.
  // For instance, RBAC can be missing a role, but enough roles are still present and bound to reason about the request.
  // +optional
  optional string evaluationError = 3;
}

// SubjectRulesReviewStatus contains the result of a rules check. This check can be incomplete depending on

  // client needs to check the 'expiration' field in a response.
  // +optional
  optional int64 expirationSeconds = 4;

  // BoundObjectRef is a reference to an object that the token will be bound to.
  // The token will only be valid for as long as the bound object exists.
  // NOTE: The API server's TokenReview endpoint will validate the
  // BoundObjectRef, but other audiences may not. Keep ExpirationSeconds
  // small if you want prompt revocation.

  // +optional
  optional bool allowVolumeExpansion = 6;

  // volumeBindingMode indicates how PersistentVolumeClaims should be
  // provisioned and bound.  When unset, VolumeBindingImmediate is used.
  // This field is only honored by servers that enable the VolumeScheduling feature.
  // +optional
  optional string volumeBindingMode = 7;

  // are also valid here.
  optional PersistentVolumeClaimSpec spec = 2;
}

// PersistentVolumeClaimVolumeSource references the user's PVC in the same namespace.
// This volume finds the bound PV and mounts that volume for the pod. A
// PersistentVolumeClaimVolumeSource is, essentially, a wrapper around another
// type of volume that is owned by someone else (the system).
message PersistentVolumeClaimVolumeSource {

  // It is entirely possible to get an error and be able to continue determine authorization status in spite of it.
  // For instance, RBAC can be missing a role, but enough roles are still present and bound to reason about the request.
  // +optional
  optional string evaluationError = 3;
}

// SubjectRulesReviewStatus contains the result of a rules check. This check can be incomplete depending on

  // +optional
  optional bool allowVolumeExpansion = 6;

  // volumeBindingMode indicates how PersistentVolumeClaims should be
  // provisioned and bound.  When unset, VolumeBindingImmediate is used.
  // This field is only honored by servers that enable the VolumeScheduling feature.
  // +optional
  optional string volumeBindingMode = 7;