// insufficient replicas are detected. Each pod stamped out by the StatefulSet
  // will fulfill this Template, but have a unique identity from the rest
  // of the StatefulSet. Each pod will be named with the format
  // <statefulsetname>-<podindex>. For example, a pod in a StatefulSet named
  // "web" with index number "3" would be named "web-3".
  optional k8s.io.api.core.v1.PodTemplateSpec template = 3;

  // insufficient replicas are detected. Each pod stamped out by the StatefulSet
  // will fulfill this Template, but have a unique identity from the rest
  // of the StatefulSet. Each pod will be named with the format
  // <statefulsetname>-<podindex>. For example, a pod in a StatefulSet named
  // "web" with index number "3" would be named "web-3".
  // The only allowed template.spec.restartPolicy value is "Always".

  // insufficient replicas are detected. Each pod stamped out by the StatefulSet
  // will fulfill this Template, but have a unique identity from the rest
  // of the StatefulSet. Each pod will be named with the format
  // <statefulsetname>-<podindex>. For example, a pod in a StatefulSet named
  // "web" with index number "3" would be named "web-3".
  // The only allowed template.spec.restartPolicy value is "Always".

  which took advantage of subdomain validation (by having dots in the name) can't
  possibly have worked, because we eventually set `pod.spec.hostname` from the `StatefulSetName`,
  and that is validated as a DNS label. ([#114172](https://github.com/kubernetes/kubernetes/pull/114172), [@thockin](https://github.com/thockin))