docs: @Benchmark
    @BenchmarkMode(Mode.SampleTime)
    @OutputTimeUnit(TimeUnit.NANOSECONDS)
    public Span addMessageEvent(Data data) {
      data.span.addMessageEvent(
          io.opencensus.trace.MessageEvent.builder(Type.RECEIVED, 1)
              .setUncompressedMessageSize(3)
              .build());
      return data.span;
    }