private val messageBuffer = Buffer()

  /** The [Buffer] of [sink]. Write to this and then flush/emit [sink]. */
  private val sinkBuffer: Buffer = sink.buffer
  private var writerClosed = false

  /** Lazily initialized on first use. */
  private var messageDeflater: MessageDeflater? = null

  // Masks are only a concern for client writers.
  private val maskKey: ByteArray? = if (isClient) ByteArray(4) else null

  private lateinit var server: MockWebServer

  @BeforeEach
  fun setUp(server: MockWebServer) {
    this.server = server

    platform.assumeNotOpenJSSE()
    server.protocolNegotiationEnabled = false
    val loggingFileSystem = LoggingFilesystem(fileSystem)
    cache = buildCache("/cache/".toPath(), Int.MAX_VALUE.toLong(), loggingFileSystem)
    client =
      clientTestRule.newClientBuilder()
        .cache(cache)

   *
   * @param key key to store in the multimap
   * @param value value to store in the multimap
   * @return {@code true} if the method increased the size of the multimap, or {@code false} if the
   *     multimap already contained the key-value pair
   */
  @CanIgnoreReturnValue
  @Override
  public boolean put(@ParametricNullness K key, @ParametricNullness V value) {

        }
        return Optional.empty();
    }

    @Override
    public Optional<Boolean> showErrors() {
        if (commandLine.hasOption(CLIManager.SHOW_ERRORS) || verbose().orElse(false)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<String> failOnSeverity() {

	"github.com/rcrowley/go-metrics"
)

func (b *BucketReplicationStats) hasReplicationUsage() bool {
	for _, s := range b.Stats {
		if s.hasReplicationUsage() {
			return true
		}
	}
	return false
}

// ReplicationStats holds the global in-memory replication stats
type ReplicationStats struct {
	// map of site deployment ID to site replication status
	// for site replication - maintain stats at global level

  private val protocol: Protocol =
    if (Protocol.H2_PRIOR_KNOWLEDGE in client.protocols) {
      Protocol.H2_PRIOR_KNOWLEDGE
    } else {
      Protocol.HTTP_2
    }

  @Volatile
  private var canceled = false

  override fun createRequestBody(
    request: Request,
    contentLength: Long,
  ): Sink {
    return stream!!.getSink()
  }

  override fun writeRequestHeaders(request: Request) {

      checkRecording();
      equivalentExpectationsBuilder.put(a, b, true);
    }

    void expectDistinct(Object a, Object b) {
      checkRecording();
      equivalentExpectationsBuilder.put(a, b, false);
    }

    void expectHash(Object object, int hash) {
      checkRecording();
      hashExpectationsBuilder.put(object, hash);
    }

    void replay() {
      checkRecording();

              List<String> list = Lists.newArrayList();

              @Override
              public boolean processLine(String line) throws IOException {
                list.add(line);
                return false;
              }

              @Override
              public List<String> getResult() {
                return list;
              }
            });

    if (expectedLines.isEmpty()) {

      checkRecording();
      equivalentExpectationsBuilder.put(a, b, true);
    }

    void expectDistinct(Object a, Object b) {
      checkRecording();
      equivalentExpectationsBuilder.put(a, b, false);
    }

    void expectHash(Object object, int hash) {
      checkRecording();
      hashExpectationsBuilder.put(object, hash);
    }

    void replay() {
      checkRecording();

            context.terminal.writer().println("Goal canceled by user.");
            return CANCELED;
        } catch (Exception e) {
            if (context.invokerRequest.options().showErrors().orElse(false)) {
                context.terminal.writer().println(e.getMessage());
                e.printStackTrace(context.terminal.writer());
            } else {
                context.terminal.writer().println(e.getMessage());