private void serialize(Server server, Query query, List<Result> results, OutputStream outputStream) throws IOException {
JsonGenerator g = jsonFactory.createJsonGenerator(outputStream, JsonEncoding.UTF8);
g.writeStartObject();
g.writeArrayFieldStart("counters");
g.writeEndArray();
String source = getSource(server);
g.writeArrayFieldStart("gauges");
List<String> typeNames = getTypeNames();