presto-benchmark/src/main/java/io/prestosql/benchmark/OdsBenchmarkResultWriter.java/OdsBenchmarkResultWriter/addResults
class OdsBenchmarkResultWriter:    @Override
    public BenchmarkResultHook addResults(Map<String, Long> results)
    {
        requireNonNull(results, "results is null");
        try {
            for (Map.Entry<String, Long> entry : results.entrySet()) {
                jsonGenerator.writeStartObject();
                jsonGenerator.writeStringField("entity", entity);
                jsonGenerator.writeStringField("key", entry.getKey());
                jsonGenerator.writeNumberField("value", entry.getValue());
                jsonGenerator.writeEndObject();
            }
        }
        catch (IOException e) {
            throw new UncheckedIOException(e);
        }
        return this;
    }