// allowed, either.
  //
  // +optional
  optional string url = 3;

  // `service` is a reference to the service for this webhook. Either
  // `service` or `url` must be specified.
  //
  // If the webhook is running within the cluster, then you should use `service`.
  //
  // +optional
  optional ServiceReference service = 1;

  // allowed, either.
  //
  // +optional
  optional string url = 3;

  // `service` is a reference to the service for this webhook. Either
  // `service` or `url` must be specified.
  //
  // If the webhook is running within the cluster, then you should use `service`.
  //
  // +optional
  optional ServiceReference service = 1;

  optional int64 deletionGracePeriodSeconds = 10;

  // Map of string keys and values that can be used to organize and categorize
  // (scope and select) objects. May match selectors of replication controllers
  // and services.
  // More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels
  // +optional
  map<string, string> labels = 11;

  optional int64 deletionGracePeriodSeconds = 10;

  // Map of string keys and values that can be used to organize and categorize
  // (scope and select) objects. May match selectors of replication controllers
  // and services.
  // More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels
  // +optional
  map<string, string> labels = 11;