CharSource concatenated = CharSource.concat(cycle);

    String expected = "abcdabcd";

    // read the first 8 chars manually, since there's no equivalent to ByteSource.slice
    // TODO(cgdecker): Add CharSource.slice?
    StringBuilder builder = new StringBuilder();
    Reader reader = concatenated.openStream(); // no need to worry about closing
    for (int i = 0; i < 8; i++) {

   */
  private void assertSuppressed(Suppression... expected) {
    assertEquals(ImmutableList.copyOf(expected), suppressor.suppressions);
  }

  // TODO(cpovirk): Just use addSuppressed+getSuppressed now that we can rely on it.
  /** Suppressor that records suppressions. */
  private static class TestSuppressor implements Closer.Suppressor {

    reject.set(false);
    executor.execute(task);
    assertEquals(1, numCalls.get());
  }

  /*
   * Under Android, MyError propagates up and fails the test?
   *
   * TODO(b/218700094): Does this matter to prod users, or is it just a feature of our testing
   * environment? If the latter, maybe write a custom Executor that avoids failing the test when it
   * sees an Error?
   */

   *
   * <p>To represent decimal constants less than {@code 2^63}, consider {@link #valueOf(long)}
   * instead.
   *
   * @since 14.0
   */
  public static UnsignedLong fromLongBits(long bits) {
    // TODO(lowasser): consider caching small values, like Long.valueOf
    return new UnsignedLong(bits);
  }

  /**
   * Returns an {@code UnsignedLong} representing the same value as the specified {@code long}.
   *

	client, err := ctx.CLIClientWithRevision(metricsOpts.Revision)
	if err != nil {
		return fmt.Errorf("failed to create k8s client: %v", err)
	}

	pl, err := client.PodsForSelector(context.TODO(), ctx.IstioNamespace(), "app.kubernetes.io/name=prometheus")
	if err != nil {
		return fmt.Errorf("not able to locate Prometheus pod: %v", err)
	}

	if len(pl.Items) < 1 {

    }

    default List<String> invalidIndexArrayFields(final Map<String, Object> source) {
        // TODO always returns empty list
        return split(getIndexAdminArrayFields(), ",").get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim)
                .filter(s -> isNonEmptyValue(source.get(s))).filter(s -> false) // TODO
                .collect(Collectors.toList()));
    }

    String getIndexAdminDateFields();

        current.pred = null;
        current.succ = null;

        current = next;
      }
      successor(header, header);
      rootReference.clear();
    } else {
      // TODO(cpovirk): Perhaps we can optimize in this case, too?
      Iterators.clear(entryIterator());
    }
  }

  private Entry<E> wrapEntry(final AvlNode<E> baseEntry) {
    return new Multisets.AbstractEntry<E>() {
      @Override

   */
  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait?
  static void delay(long millis) throws InterruptedException {
    long startTime = System.nanoTime();
    long ns = millis * 1000 * 1000;
    for (; ; ) {
      if (millis > 0L) Thread.sleep(millis);
      else // too short to sleep
      Thread.yield();
      long d = ns - (System.nanoTime() - startTime);

}

func combine(files []string, out string) error {
	fmt.Printf("Attempting to combine version %q.\n", out)
	m, err := readAndMap(files, 1, 0)
	if err != nil {
		return err
	}
	if m.blocks > 0 {
		// TODO: Support multiple blocks. For now use -xver.
		return fmt.Errorf("multiple blocks found, only one block supported. Try with -xver")
	}
	lastValid := 0
	missing := 0
	for i := range m.filled {
		if m.filled[i] == 1 {

		if *retention.Days > maximumRetentionDays {
			return fmt.Errorf("Default retention period too large for 'Days' %d", *retention.Days)
		}
	} else if *retention.Years == 0 {
		return fmt.Errorf("Default retention period must be a positive integer value for 'Years'")
	} else if *retention.Years > maximumRetentionYears {
		return fmt.Errorf("Default retention period too large for 'Years' %d", *retention.Years)
	}

	*dr = DefaultRetention(retention)