// +optional
  optional string type = 1;

  // Rolling update config params. Present only if DeploymentStrategyType =
  // RollingUpdate.
  // ---
  // TODO: Update this to follow our convention for oneOf, whatever we decide it
  // to be.
  // +optional
  optional RollingUpdateDeployment rollingUpdate = 2;
}

// DEPRECATED.
message RollbackConfig {

  // Trailing slashes are trimmed when validating the path prefix with a host path.
  //
  // Examples:
  // `/foo` would allow `/foo`, `/foo/` and `/foo/bar`
  // `/foo` would not allow `/food` or `/etc/foo`
  optional string pathPrefix = 1;

  // when set to true, will allow host volumes matching the pathPrefix only if all volume mounts are readOnly.
  // +optional
  optional bool readOnly = 2;
}

  // field must be between 0 and 100, inclusive, and it defaults to 0.
  // The number of seats that other levels can borrow from this level, known
  // as this level's LendableConcurrencyLimit (LendableCL), is defined as follows.
  //
  // LendableCL(i) = round( NominalCL(i) * lendablePercent(i)/100.0 )
  //
  // +optional
  optional int32 lendablePercent = 3;

  // `borrowingLimitPercent`, if present, configures a limit on how many

  // field must be between 0 and 100, inclusive, and it defaults to 0.
  // The number of seats that other levels can borrow from this level, known
  // as this level's LendableConcurrencyLimit (LendableCL), is defined as follows.
  //
  // LendableCL(i) = round( NominalCL(i) * lendablePercent(i)/100.0 )
  //
  // +optional
  optional int32 lendablePercent = 3;

  // `borrowingLimitPercent`, if present, configures a limit on how many

  // it never skips the policy.
  //
  // For example, to run the webhook on any objects whose namespace is not
  // associated with "runlevel" of "0" or "1";  you will set the selector as
  // follows:
  // "namespaceSelector": {
  //   "matchExpressions": [
  //     {
  //       "key": "runlevel",
  //       "operator": "NotIn",
  //       "values": [
  //         "0",
  //         "1"

  // No stabilization is used.
  // +optional
  optional HPAScalingRules scaleUp = 1;

  // scaleDown is scaling policy for scaling Down.
  // If not set, the default value is to allow to scale down to minReplicas pods, with a
  // 300 second stabilization window (i.e., the highest recommendation for
  // the last 300sec is used).
  // +optional
  optional HPAScalingRules scaleDown = 2;
}

  // +optional
  optional string type = 1;

  // Rolling update config params. Present only if type = "RollingUpdate".
  // ---
  // TODO: Update this to follow our convention for oneOf, whatever we decide it
  // to be. Same as Deployment `strategy.rollingUpdate`.
  // See https://github.com/kubernetes/kubernetes/issues/35345
  // +optional

  // Default is OnDelete.
  // +optional
  optional string type = 1;

  // Rolling update config params. Present only if type = "RollingUpdate".
  // ---
  // TODO: Update this to follow our convention for oneOf, whatever we decide it
  // to be. Same as Deployment `strategy.rollingUpdate`.
  // See https://github.com/kubernetes/kubernetes/issues/35345
  // +optional

  // +optional
  optional string type = 1;

  // Rolling update config params. Present only if type = "RollingUpdate".
  // ---
  // TODO: Update this to follow our convention for oneOf, whatever we decide it
  // to be. Same as Deployment `strategy.rollingUpdate`.
  // See https://github.com/kubernetes/kubernetes/issues/35345
  // +optional

//
// Each key is either a '.' representing the field itself, and will always map to an empty set,
// or a string representing a sub-field or item. The string will follow one of these four formats:
// 'f:<name>', where <name> is the name of a field in a struct, or key in a map
// 'v:<value>', where <value> is the exact json formatted value of a list item