message HorizontalPodAutoscalerSpec {
  // scaleTargetRef points to the target resource to scale, and is used to the pods for which metrics
  // should be collected, as well as to actually change the replica count.
  optional CrossVersionObjectReference scaleTargetRef = 1;

  // minReplicas is the lower limit for the number of replicas to which the autoscaler

  // and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
  // a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the ValidatingAdmissionPolicy.
  //
  // Defaults to "Equivalent"
  // +optional
  optional string matchPolicy = 7;
}