// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
  // +optional
  optional Time deletionTimestamp = 9;

  // Number of seconds allowed for this object to gracefully terminate before
  // it will be removed from the system. Only set when deletionTimestamp is also set.
  // May only be shortened.
  // Read-only.
  // +optional
  optional int64 deletionGracePeriodSeconds = 10;