@Override
  public JsonObjectBuilder getJsonObjectBuilder() {
    return super.getJsonObjectBuilder()
      .add("localCandidateId", this.localCandidateId)
      .add("remoteCandidateId", this.remoteCandidateId)
      .add("state", this.state)
      .add("priority", this.priority)
      .add("nominated", this.nominated)
      .add("bytesSent", this.bytesSent)
      .add("currentRoundTripTime", this.currentRoundTripTime)
      .add("totalRoundTripTime", this.totalRoundTripTime)
      .add("bytesReceived", this.bytesReceived);
  }
RTCIceCandidatePairStats, with attributes transportId, localCandidateId, remoteCandidateId, state, priority, nominated, bytesSent,
bytesReceived, totalRoundTripTime, currentRoundTripTime
KITE-Framework/src/main/java/org/webrtc/kite/stats/rtc/RTCIceCandidatePairStats.java