@Override
  public JsonObjectBuilder getJsonObjectBuilder() {
    return super.getJsonObjectBuilder()
        .add("ssrc", this.ssrc)
        .add("kind", this.kind)
        .add("transportId", this.transportId)
        .add("codecId", this.codecId)
        .add("timestamp", this.timestamp);
  }
Represent RTCRtpStreamStats, outbound and inbound, sent and received.
KITE-Framework/src/main/java/org/webrtc/kite/stats/rtc/rtpstream/RTCRtpStreamStats.java