@Override
  public JsonObjectBuilder getJsonObjectBuilder() {
    return super.getJsonObjectBuilder()
        .add("senderId", this.senderId)
        .add("remoteId", this.remoteId)
        .add("nackCount", this.nackCount)
        .add("framesEncoded", this.framesEncoded)
        .add("framesSent", this.framesSent)
        .add("framesPerSecond", this.framesPerSecond);
  }
Represent RTCRtpStreamStats, outbound and inbound, sent and received.
KITE-Framework/src/main/java/org/webrtc/kite/stats/rtc/rtpstream/RTCOutboundRtpStreamStats.java