abstract E get(int index);

    @Override
    public UnmodifiableIterator<E> iterator() {
      return asList().iterator();
    }

    @Override
    ImmutableList<E> createAsList() {
      return new ImmutableAsList<E>() {
        @Override
        public E get(int index) {
          return Indexed.this.get(index);
        }

        @Override
        Indexed<E> delegateCollection() {

  private val handler =
    object : Handler() {
      override fun publish(logRecord: LogRecord) {
        logs += "${logRecord.level}: ${logRecord.message}"
      }

      override fun flush() {
      }

      override fun close() {
      }
    }

  private var previousLevel: Level? = null

  override fun beforeEach(context: ExtensionContext?) {
    previousLevel = logger.level

        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public Integer getUserCodeMinLengthAsInteger() {
                return 10;
            }

            @Override
            public Integer getUserCodeMaxLengthAsInteger() {
                return 20;
            }

            @Override
            public String getUserCodePattern() {

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.bad_word";
    }

    @Override
    public String asEsIndexType() {
        return "bad_word";

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.boost_document_rule";
    }

    @Override
    public String asEsIndexType() {

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.duplicate_host";
    }

    @Override
    public String asEsIndexType() {

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.job_log";
    }

    @Override
    public String asEsIndexType() {
        return "job_log";

        inFrames.add(inFrame)
      }
    }
  }

  fun openSocket(): Socket = Socket("localhost", port)

  @Synchronized override fun close() {
    executor.shutdown()
    socket?.closeQuietly()
    serverSocket?.closeQuietly()
  }

  override fun toString(): String = "MockHttp2Peer[$port]"

  private class OutFrame(
    val sequence: Int,
    val start: Long,
    val truncated: Boolean,

  ImmutableCollection() {}

  @Override
  public abstract UnmodifiableIterator<E> iterator();

  @Override
  public boolean contains(@Nullable Object object) {
    return object != null && super.contains(object);
  }

  @Override
  public final boolean add(E e) {
    throw new UnsupportedOperationException();
  }

  @Override
  public final boolean remove(@Nullable Object object) {

    //                                                                    ================
    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.data_config";
    }

    @Override
    public String asEsIndexType() {
        return "data_config";