Se llama "asíncrono" porque el sistema / programa no tiene que estar "sincronizado" con la tarea lenta, esperando el momento exacto en que finaliza la tarea, sin hacer nada, para poder recoger el resultado de la tarea y continuar el trabajo.

  // +optional
  optional string failurePolicy = 4;

  // matchPolicy defines how the "rules" list is used to match incoming requests.
  // Allowed values are "Exact" or "Equivalent".
  //
  // - Exact: match a request only if it exactly matches a specified rule.
  // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,

  // +optional
  optional string failurePolicy = 4;

  // matchPolicy defines how the "rules" list is used to match incoming requests.
  // Allowed values are "Exact" or "Equivalent".
  //
  // - Exact: match a request only if it exactly matches a specified rule.
  // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,

  // as defined by RFC 3986. Paths must begin with a '/' and must be present
  // when using PathType with value "Exact" or "Prefix".
  // +optional
  optional string path = 1;

  // pathType determines the interpretation of the path matching. PathType can
  // be one of the following values:
  // * Exact: Matches the URL path exactly.
  // * Prefix: Matches based on a URL path prefix split by '/'. Matching is

    } else {
      checkState(yStats.sumOfSquaresOfDeltas() > 0.0);
      return LinearTransformation.vertical(xStats.mean());
    }
  }

  /**
   * {@inheritDoc}
   *
   * <p><b>Note:</b> This tests exact equality of the calculated statistics, including the floating
   * point values. Two instances are guaranteed to be considered equal if one is copied from the

    } else {
      checkState(yStats.sumOfSquaresOfDeltas() > 0.0);
      return LinearTransformation.vertical(xStats.mean());
    }
  }

  /**
   * {@inheritDoc}
   *
   * <p><b>Note:</b> This tests exact equality of the calculated statistics, including the floating
   * point values. Two instances are guaranteed to be considered equal if one is copied from the

 *    prefix at all (`publicobject.com`). For most applications this is the best way to configure
 *    certificate pinning.
 *
 *  * **Exactly one subdomain**: Use a single asterisk like `*.publicobject.com` to match exactly
 *    one prefix (`www.publicobject.com`, `api.publicobject.com`). Be careful with this approach as

    return construct(array);
  }

  /**
   * Returns an immutable list containing the given elements, in order. If {@code elements} is a
   * {@link Collection}, this method behaves exactly as {@link #copyOf(Collection)}; otherwise, it
   * behaves exactly as {@code copyOf(elements.iterator()}.
   *
   * @throws NullPointerException if {@code elements} contains a null element
   */

              desiredType, Optional.fromNullable(PublicSuffixPatterns.UNDER.get(ancestorName)))) {
        return i - 1;
      }

      if (matchesType(
          desiredType, Optional.fromNullable(PublicSuffixPatterns.EXACT.get(ancestorName)))) {
        return i;
      }

      // Excluded domains (e.g. !nhs.uk) use the next highest
      // domain as the effective public suffix (e.g. uk).

  repeated NamedRuleWithOperations excludeResourceRules = 4;

  // matchPolicy defines how the "MatchResources" list is used to match incoming requests.
  // Allowed values are "Exact" or "Equivalent".
  //
  // - Exact: match a request only if it exactly matches a specified rule.
  // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,