private fun uppercase(original: Source): Source {
      return object : ForwardingSource(original) {
        override fun read(
          sink: Buffer,
          byteCount: Long,
        ): Long {
          val mixedCase = Buffer()
          val count = original.read(mixedCase, byteCount)
          sink.writeUtf8(mixedCase.readUtf8().uppercase())
          return count
        }
      }
    }
  }

      .build()

  private fun buildLocalhost(
    bootstrapClient: OkHttpClient,
    includeIPv6: Boolean,
    post: Boolean = false,
  ): DnsOverHttps {
    val url = server.url("/lookup?ct")
    return DnsOverHttps
      .Builder()
      .client(bootstrapClient)
      .includeIPv6(includeIPv6)
      .resolvePrivateAddresses(true)
      .url(url)
      .post(post)
      .build()
  }

                || level == FileInformation.FILE_ENDOFFILE_INFO) {
            // These are valid levels, skip assertion
            return;
        }

        IllegalArgumentException exception =
                assertThrows(IllegalArgumentException.class, () -> Trans2QueryPathInformation.mapInformationLevel(level));

      this.delegate = delegate;
      this.delta = delta;
    }

    @Override
    protected List<E> delegate() {
      return delegate;
    }

    @Override
    public int size() {
      return delegate.size() + delta;
    }
  }

  @SuppressWarnings("JoinIterableIterator") // explicitly testing iterator overload, too
  public void testNoSpecialNullBehavior() {

     * it requires that bytes have already been flushed by the server.
     */
    fun clientSourceBufferSize(): Long {
      source.request(1L)
      return source.buffer.size
    }

    fun processNextFrame(): Boolean {
      taskFaker.runTasks()
      return webSocket!!.processNextFrame()
    }

    override fun cancel() {
      canceled = true
      delegate.cancel()
    }
  }

    // We need to handle long logger names before they hit Log.
    // java.lang.IllegalArgumentException: Log tag "okhttp3.mockwebserver.MockWebServer" exceeds limit of 23 characters
    return knownLoggers[loggerName] ?: loggerName.take(23)
  }

  fun enable() {
    try {
      for ((logger, tag) in knownLoggers) {
        enableLogging(logger, tag)
      }
    } catch (re: RuntimeException) {

   * Float#valueOf}.
   */
  private static @Nullable Float referenceTryParse(String input) {
    if (input.trim().length() < input.length()) {
      return null;
    }
    try {
      return Float.valueOf(input);
    } catch (NumberFormatException e) {
      return null;
    }
  }

  @GwtIncompatible // Floats.tryParse
  private static void checkTryParse(String input) {

  }

  @GwtIncompatible // java.util.BitSet
  private static BitSet bitSet(String chars) {
    return bitSet(chars.toCharArray());
  }

  @GwtIncompatible // java.util.BitSet
  private static BitSet bitSet(char[] chars) {
    BitSet tmp = new BitSet();
    for (char c : chars) {
      tmp.set(c);
    }
    return tmp;
  }

  @GwtIncompatible // java.util.Random, java.util.BitSet

   * Float#valueOf}.
   */
  private static @Nullable Float referenceTryParse(String input) {
    if (input.trim().length() < input.length()) {
      return null;
    }
    try {
      return Float.valueOf(input);
    } catch (NumberFormatException e) {
      return null;
    }
  }

  @GwtIncompatible // Floats.tryParse
  private static void checkTryParse(String input) {

    assertThat(inputStream.read()).isEqualTo('B'.code)
    assertThat(inputStream.read()).isEqualTo('C'.code)
    try {
      inputStream.read() // if Content-Length was accurate, this would return -1 immediately
      fail<Unit>()
    } catch (expected: SocketTimeoutException) {
      // Expected.
    }
    val urlConnection2 = server.url("/").toUrl().openConnection()