// Absolute number is calculated from percentage by rounding down.
  // This can not be 0 if MaxSurge is 0.
  // Defaults to 25%.
  // Example: when this is set to 30%, the old ReplicaSet can be scaled down to 70% of desired pods
  // immediately when the rolling update starts. Once new pods are ready, old ReplicaSet
  // can be scaled down further, followed by scaling up the new ReplicaSet, ensuring

  // Absolute number is calculated from percentage by rounding down.
  // This can not be 0 if MaxSurge is 0.
  // By default, a fixed value of 1 is used.
  // Example: when this is set to 30%, the old RC can be scaled down to 70% of desired pods
  // immediately when the rolling update starts. Once new pods are ready, old RC
  // can be scaled down further, followed by scaling up the new RC, ensuring

  // Absolute number is calculated from percentage by rounding down.
  // This can not be 0 if MaxSurge is 0.
  // Defaults to 25%.
  // Example: when this is set to 30%, the old ReplicaSet can be scaled down to 70% of desired pods
  // immediately when the rolling update starts. Once new pods are ready, old ReplicaSet
  // can be scaled down further, followed by scaling up the new ReplicaSet, ensuring

  // considered while scaling up or scaling down.
  // StabilizationWindowSeconds must be greater than or equal to zero and less than or equal to 3600 (one hour).
  // If not set, use the default values:
  // - For scale up: 0 (i.e. no stabilization is done).
  // - For scale down: 300 (i.e. the stabilization window is 300 seconds long).
  // +optional

  // Absolute number is calculated from percentage by rounding down.
  // This can not be 0 if MaxSurge is 0.
  // Defaults to 25%.
  // Example: when this is set to 30%, the old ReplicaSet can be scaled down to 70% of desired pods
  // immediately when the rolling update starts. Once new pods are ready, old ReplicaSet
  // can be scaled down further, followed by scaling up the new ReplicaSet, ensuring

  optional CrossVersionObjectReference scaleTargetRef = 1;

  // minReplicas is the lower limit for the number of replicas to which the autoscaler
  // can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the
  // alpha feature gate HPAScaleToZero is enabled and at least one Object or External
  // metric is configured.  Scaling is active as long as at least one metric value is

  // considered while scaling up or scaling down.
  // StabilizationWindowSeconds must be greater than or equal to zero and less than or equal to 3600 (one hour).
  // If not set, use the default values:
  // - For scale up: 0 (i.e. no stabilization is done).
  // - For scale down: 300 (i.e. the stabilization window is 300 seconds long).
  // +optional

  optional CrossVersionObjectReference scaleTargetRef = 1;

  // minReplicas is the lower limit for the number of replicas to which the autoscaler
  // can scale down.  It defaults to 1 pod.  minReplicas is allowed to be 0 if the
  // alpha feature gate HPAScaleToZero is enabled and at least one Object or External
  // metric is configured.  Scaling is active as long as at least one metric value is