* the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Character> asList(char... backingArray) {
    if (backingArray.length == 0) {
      return Collections.emptyList();
    }

   * the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Short> asList(short... backingArray) {
    if (backingArray.length == 0) {
      return Collections.emptyList();
    }

   * the returned list is unspecified.
   *
   * <p>The returned list is serializable.
   *
   * @param backingArray the array to back the list
   * @return a list view of the array
   */
  public static List<Short> asList(short... backingArray) {
    if (backingArray.length == 0) {
      return Collections.emptyList();
    }

    }
    for (existingCall in readyAsyncCalls) {
      if (existingCall.host == host) return existingCall
    }
    return null
  }

  /**
   * Cancel all calls currently enqueued or executing. Includes calls executed both
   * [synchronously][Call.execute] and [asynchronously][Call.enqueue].
   */
  @Synchronized
  fun cancelAll() {
    for (call in readyAsyncCalls) {

  /**
   * The protocols supported by ALPN on incoming HTTPS connections in order of preference. The list
   * must contain [Protocol.HTTP_1_1]. It must not contain null.
   *
   * This list is ignored when [negotiation is disabled][protocolNegotiationEnabled].
   */
  public var protocols: List<Protocol> = immutableListOf(Protocol.HTTP_2, Protocol.HTTP_1_1)
    set(value) {

        } else {
            if (value instanceof final Collection<?> coll && !coll.isEmpty()) {
                // care performance for List that the most frequent pattern
                final Object first = coll instanceof List<?> ? ((List<?>) coll).get(0) : coll.iterator().next();
                if (first instanceof Entity) {

    Iterable<E> iterable = getDelegate();
    if (iterable instanceof List) {
      List<E> list = (List<E>) iterable;
      if (list.isEmpty()) {
        return Optional.absent();
      }
      return Optional.of(list.get(list.size() - 1));
    }
    Iterator<E> iterator = iterable.iterator();
    if (!iterator.hasNext()) {
      return Optional.absent();
    }

    /*

    Iterable<E> iterable = getDelegate();
    if (iterable instanceof List) {
      List<E> list = (List<E>) iterable;
      if (list.isEmpty()) {
        return Optional.absent();
      }
      return Optional.of(list.get(list.size() - 1));
    }
    Iterator<E> iterator = iterable.iterator();
    if (!iterator.hasNext()) {
      return Optional.absent();
    }

    /*

      List<String> list = Lists.newArrayList(elements);
      list.add("zzz");
      return ImmutableSortedSet.copyOf(list).headSet("zzy");
    }
  }

  public static class ImmutableSortedSetTailsetGenerator extends TestStringSortedSetGenerator {
    @Override
    protected SortedSet<String> create(String[] elements) {
      List<String> list = Lists.newArrayList(elements);

    ALL_INTEGER_CANDIDATES = Iterables.concat(NONZERO_INTEGER_CANDIDATES, ImmutableList.of(0));
  }

  /*
   * This list contains values that attempt to provoke overflow in long operations. It contains
   * positive values on or near 2^N for N near multiples of 8 (near byte boundaries). This list is
   * a superset of POSITIVE_INTEGER_CANDIDATES.
   */
  static final ImmutableSet<Long> POSITIVE_LONG_CANDIDATES;