final String key = entry.getKey();
            final String[] values = entry.getValue();
            if (values == null) {
                // nothing
            } else if (values.length == 1) {
                queryBuf.append(' ').append(key).append(":\"").append(values[0]).append('\"');
            } else if (values.length > 1) {
                boolean first = true;

  val hpackWriter: Hpack.Writer = Hpack.Writer(out = hpackBuffer)

  @Throws(IOException::class)
  fun connectionPreface() {
    withLock {
      if (closed) throw IOException("closed")
      if (!client) return // Nothing to write; servers don't send connection headers!
      if (logger.isLoggable(FINE)) {
        logger.fine(format(">> CONNECTION ${CONNECTION_PREFACE.hex()}"))
      }
      sink.write(CONNECTION_PREFACE)
      sink.flush()

      this.future = future;
    }

    @Override
    public void run() {
      try {
        future.get();
      } catch (Exception e) {
        // nothing
      }
    }

    @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
    void awaitWaiting() {
      while (!isBlocked()) {

    assertThrows(IndexOutOfBoundsException.class, () -> nullWriter.append(null, -1, 4));

    assertThrows(IndexOutOfBoundsException.class, () -> nullWriter.append(null, 0, 5));

    // nothing really to assert?
    assertSame(CharStreams.nullWriter(), CharStreams.nullWriter());
  }

  /**
   * Returns a reader wrapping the given reader that only reads half of the maximum number of

    assertThrows(IndexOutOfBoundsException.class, () -> nullWriter.append(null, -1, 4));

    assertThrows(IndexOutOfBoundsException.class, () -> nullWriter.append(null, 0, 5));

    // nothing really to assert?
    assertSame(CharStreams.nullWriter(), CharStreams.nullWriter());
  }

  /**
   * Returns a reader wrapping the given reader that only reads half of the maximum number of

// along with any necessary parents, and returns nil,
// or else returns an error.
// The permission bits perm (before umask) are used for all
// directories that MkdirAll creates.
// If path is already a directory, MkdirAll does nothing
// and returns nil.
func osMkdirAll(dirPath string, perm os.FileMode, baseDir string) error {
	if baseDir != "" {
		if strings.HasPrefix(baseDir, dirPath) {
			return nil
		}
	}

      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

  /**
   * Start the service.
   *
   * <p>By default this method does nothing.
   */
  protected void startUp() throws Exception {}

  /**
   * Stop the service. This is guaranteed not to run concurrently with {@link #runOneIteration}.
   *
   * <p>By default this method does nothing.
   */
  protected void shutDown() throws Exception {}

  /**

        // Then - nothing should happen (empty implementation)
        verifyNoInteractions(request);
    }

    @Test
    @DisplayName("Should setup response correctly")
    void testSetupResponse() {
        // Given
        Response resp = mock(Response.class);

        // When
        response.setupResponse(resp);

        // Then - nothing should happen (empty implementation)

     */
    public static class TimeoutSettings {
        /**
         * Constructs a new {@link TimeoutSettings}.
         */
        public TimeoutSettings() {
            // nothing
        }

        /** Search timeout. */
        protected String searchTimeout = "15s";
        /** Index timeout. */
        protected String indexTimeout = "1m";
        /** Bulk timeout. */