Header   json.RawMessage
					Metadata json.RawMessage
				}
				versions := make([]version, hdr.versions)
				headerVer := hdr.headerVer
				err = decodeVersions(v, hdr.versions, func(idx int, hdr, meta []byte) error {
					var header xlMetaV2VersionHeaderV2
					if _, err := header.UnmarshalMsg(hdr, headerVer); err != nil {
						return err
					}
					b, err := header.MarshalJSON()
					if err != nil {
						return err

		// for these per-revision ones anyways, since the prioritization is about preferring one revision over others.
		config.KeyComparison = func(leaderKey string) bool {
			return LocationPrioritizedComparison(leaderKey, l)
		}
	}

	return k8sleaderelection.NewLeaderElector(config)
}

func LocationPrioritizedComparison(currentLeaderRevision string, l *LeaderElection) bool {

	for i, test := range parseTests {
		msg, err := ReadMessage(bytes.NewBuffer([]byte(test.in)))
		if err != nil {
			t.Errorf("test #%d: Failed parsing message: %v", i, err)
			continue
		}
		if !headerEq(msg.Header, test.header) {
			t.Errorf("test #%d: Incorrectly parsed message header.\nGot:\n%+v\nWant:\n%+v",
				i, msg.Header, test.header)
		}
		body, err := io.ReadAll(msg.Body)
		if err != nil {

	// uint16Len is the length (in bytes) of a uint16.
	uint16Len = 2

	// uint32Len is the length (in bytes) of a uint32.
	uint32Len = 4

	// headerLen is the length (in bytes) of a DNS header.
	//
	// A header is comprised of 6 uint16s and no padding.
	headerLen = 6 * uint16Len
)

type nestedError struct {
	// s is the current level's error message.
	s string

	// err is the nested error.
	err error

   *
   * @since 33.0.0
   */
  public static final String AD_AUCTION_SIGNALS = "Ad-Auction-Signals";

  /**
   * The HTTP <a href="https://wicg.github.io/turtledove/#http-headerdef-ad-auction-allowed">{@code
   * Ad-Auction-Allowed}</a> header field name.
   *
   * @since 33.2.0
   */
  public static final String AD_AUCTION_ALLOWED = "Ad-Auction-Allowed";

  /**

   *
   * @since 33.0.0
   */
  public static final String AD_AUCTION_SIGNALS = "Ad-Auction-Signals";

  /**
   * The HTTP <a href="https://wicg.github.io/turtledove/#http-headerdef-ad-auction-allowed">{@code
   * Ad-Auction-Allowed}</a> header field name.
   *
   * @since 33.2.0
   */
  public static final String AD_AUCTION_ALLOWED = "Ad-Auction-Allowed";

  /**