([#123341](https://github.com/kubernetes/kubernetes/pull/123341), [@neolit123](https://github.com/neolit123))

    /** The key of the configuration. e.g. Referrer-Policy:strict-origin-when-cross-origin */
    String API_JSON_RESPONSE_HEADERS = "api.json.response.headers";

    /** The key of the configuration. e.g. false */
    String API_JSON_RESPONSE_EXCEPTION_INCLUDED = "api.json.response.exception.included";

    /** The key of the configuration. e.g. Referrer-Policy:strict-origin-when-cross-origin */

### etcd moves to version 3.5.0

  /**
   * The HTTP <a href="https://www.w3.org/TR/referrer-policy/">{@code Referrer-Policy}</a> header
   * field name.
   *
   * @since 23.4
   */
  public static final String REFERRER_POLICY = "Referrer-Policy";

  /**
   * Values for the <a href="https://www.w3.org/TR/referrer-policy/">{@code Referrer-Policy}</a>
   * header.
   *
   * @since 23.4
   */

    @Test
    public void test_promiseChaining_returnsSamePromise() throws Exception {
        final Deferred<SuggestResponse> deferred = new Deferred<>();

        Deferred<SuggestResponse>.Promise promise1 = deferred.promise();
        Deferred<SuggestResponse>.Promise promise2 = promise1.then(response -> {});
        Deferred<SuggestResponse>.Promise promise3 = promise2.error(error -> {});

     */
    public Deferred<T>.Promise execute(final Client client) {
        final String error = getValidationError();
        if (!Strings.isNullOrEmpty(error)) {
            throw new IllegalArgumentException(error);
        }

        final Deferred<T> deferred = new Deferred<>();
        try {
            processRequest(client, deferred);
        } catch (final Exception e) {

        // Then
        assertEquals(CRYPTO_ERROR_MESSAGE, exception.getMessage(), "Crypto message should be preserved");
        assertSame(cause, exception.getCause(), "Crypto cause should be preserved");
    }

     * @return A Promise that will be resolved with the SuggestIndexResponse
     */
    public Deferred<SuggestIndexResponse>.Promise indexFromQueryLog(final ContentIndexingContext ctx, final QueryLogReader queryLogReader,
            final int docPerReq, final long requestInterval) {
        final Deferred<SuggestIndexResponse> deferred = new Deferred<>();
        threadPool.execute(() -> {
            final long start = System.currentTimeMillis();

        nb.index = idx;
        nb.deferred = deferred;
        return nb;
    }

    /**
     * Resets the buffer position to the start.
     */
    public void reset() {
        this.index = start;
        length = 0;
        deferred = this;
    }

    /**
     * Returns the current index position in the buffer.
     *
     * @return the current index
     */

                _dst = _dst.deferred;
                this.root_directory.encode(_dst);

            }
            if (this.object_name != null) {
                _dst = _dst.deferred;
                this.object_name.encode(_dst);

            }
            if (this.security_quality_of_service != null) {
                _dst = _dst.deferred;