// Some subresources do not return normal resources, these will have null or empty return types.
  optional .k8s.io.apimachinery.pkg.apis.meta.v1.GroupVersionKind responseKind = 2;

  // acceptedTypes describes the kinds that this endpoint accepts.
  // Subresources may accept the standard content types or define
  // custom negotiation schemes. The list may not be exhaustive for
  // all operations.
  // +listType=map