docs: @Setup(Level.Trial)
    public void setup() throws Exception {
      super.setup(ExecutorType.DIRECT,
          ExecutorType.DIRECT,
          MessageSize.SMALL,
          MessageSize.SMALL,
          FlowWindowSize.LARGE,
          ChannelType.NIO,
          maxConcurrentStreams,
          channelCount);
      callCounter = new AtomicLong();
      completed = new AtomicBoolean();
      startUnaryCalls(maxConcurrentStreams, callCounter, completed, 1);
    }