// deleted and another user by the same name is added, they will have
  // different UIDs.
  // +optional
  optional string uid = 2;

  // The names of groups this user is a part of.
  // +optional
  repeated string groups = 3;

  // Any additional information provided by the authenticator.
  // +optional
  map<string, ExtraValue> extra = 4;

  // deleted and another user by the same name is added, they will have
  // different UIDs.
  // +optional
  optional string uid = 2;

  // The names of groups this user is a part of.
  // +optional
  repeated string groups = 3;

  // Any additional information provided by the authenticator.
  // +optional
  map<string, ExtraValue> extra = 4;

  // targetRef is a reference to a Kubernetes object that represents this
  // endpoint.
  // +optional
  optional k8s.io.api.core.v1.ObjectReference targetRef = 4;

  // deprecatedTopology contains topology information part of the v1beta1
  // API. This field is deprecated, and will be removed when the v1beta1
  // API is removed (no sooner than kubernetes v1.24).  While this field can