presto-benchmark/src/main/java/io/prestosql/benchmark/JsonAvgBenchmarkResultWriter.java/JsonAvgBenchmarkResultWriter/JsonAvgBenchmarkResultWriter
class JsonAvgBenchmarkResultWriter:    public JsonAvgBenchmarkResultWriter(OutputStream outputStream)
    {
        requireNonNull(outputStream, "outputStream is null");
        this.outputStream = outputStream;
    }