return results.ifEmpty {
      throwBestFailure(hostname, failures)
    }
  }

  private fun executeRequests(
    hostname: String,
    networkRequests: List<Call>,
    responses: MutableList<InetAddress>,
    failures: MutableList<Exception>,
  ) {
    val latch = CountDownLatch(networkRequests.size)

    for (call in networkRequests) {
      call.enqueue(
        object : Callback {
          override fun onFailure(

   */
  override fun toString(): String = commonToString()

  fun toMultimap(): Map<String, List<String>> {
    val result = TreeMap<String, MutableList<String>>(String.CASE_INSENSITIVE_ORDER)
    for (i in 0 until size) {
      val name = name(i).lowercase(Locale.US)
      var values: MutableList<String>? = result[name]
      if (values == null) {
        values = ArrayList(2)
        result[name] = values
      }

    List<String> mutableList = Lists.newArrayList("789", "123");
    Iterable<Long> convertedValues = STR_TO_LONG.convertAll(mutableList);
    assertEquals(ImmutableList.of(789L, 123L), ImmutableList.copyOf(convertedValues));

    Iterator<Long> iterator = convertedValues.iterator();
    iterator.next();
    iterator.remove();
    assertEquals(ImmutableList.of("123"), mutableList);
  }

  public void testReverse() {

    Collection<String> c = MinimalCollection.of("a", "b", "a");
    List<String> list = ImmutableList.copyOf(c);
    assertEquals(asList("a", "b", "a"), list);
    List<String> mutableList = asList("a", "b");
    list = ImmutableList.copyOf(mutableList);
    mutableList.set(0, "c");
    assertEquals(asList("a", "b"), list);
  }

  public void testCopyOf_collectionContainingNull() {

    } catch (ioe: IOException) {
      if (exception == null) {
        exception = ioe
      }
    }
  }
  if (exception != null) {
    throw exception
  }
}

internal fun <E> MutableList<E>.addIfAbsent(element: E) {
  if (!contains(element)) add(element)
}

internal fun Exception.withSuppressed(suppressed: List<Exception>): Throwable =
  apply {
    for (e in suppressed) addSuppressed(e)
  }

internal fun Headers.commonValue(index: Int): String =
  namesAndValues.getOrNull(index * 2 + 1) ?: throw IndexOutOfBoundsException("value[$index]")

internal fun Headers.commonValues(name: String): List<String> {
  var result: MutableList<String>? = null
  for (i in 0 until size) {
    if (name.equals(name(i), ignoreCase = true)) {
      if (result == null) result = ArrayList(2)
      result.add(value(i))
    }
  }

      } catch (e: IOException) {
        Platform.get().log("Loading cookies failed for " + url.resolve("/...")!!, WARN, e)
        return emptyList()
      }

    var cookies: MutableList<Cookie>? = null
    for ((key, value) in cookieHeaders) {
      if (("Cookie".equals(key, ignoreCase = true) || "Cookie2".equals(key, ignoreCase = true)) &&
        value.isNotEmpty()
      ) {

        Platform.get().log("Unable to parse challenge", Platform.WARN, e)
      }
    }
  }
  return result
}

@Throws(EOFException::class)
private fun Buffer.readChallengeHeader(result: MutableList<Challenge>) {
  var peek: String? = null

  while (true) {
    // Read a scheme name for this challenge if we don't have one already.
    if (peek == null) {
      skipCommasAndWhitespace()
      peek = readToken()

    Collection<String> c = MinimalCollection.of("a", "b", "a");
    List<String> list = ImmutableList.copyOf(c);
    assertEquals(asList("a", "b", "a"), list);
    List<String> mutableList = asList("a", "b");
    list = ImmutableList.copyOf(mutableList);
    mutableList.set(0, "c");
    assertEquals(asList("a", "b"), list);
  }

  public void testCopyOf_collectionContainingNull() {

    object : CookieHandler() {
      override fun put(
        uri: URI?,
        responseHeaders: MutableMap<String, MutableList<String>>?,
      ) = TODO()

      override fun get(
        uri: URI?,
        requestHeaders: MutableMap<String, MutableList<String>>?,
      ): MutableMap<String, MutableList<String>> = TODO()
    }

  private fun newInterceptorChain(): Interceptor.Chain =