toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() {
  return 'NERtcStats{txBytes: $txBytes, rxBytes: $rxBytes, '
      'cpuAppUsage: $cpuAppUsage, cpuTotalUsage: $cpuTotalUsage, '
      'memoryAppUsageRatio: $memoryAppUsageRatio, '
      'memoryTotalUsageRatio: $memoryTotalUsageRatio, '
      'memoryAppUsageInKBytes: $memoryAppUsageInKBytes, '
      'totalDuration: $totalDuration, txAudioBytes: $txAudioBytes, '
      'txVideoBytes: $txVideoBytes, rxAudioBytes: $rxAudioBytes, '
      'rxVideoBytes: $rxVideoBytes, rxAudioKBitRate: $rxAudioKBitRate, '
      'rxVideoKBitRate: $rxVideoKBitRate, txAudioKBitRate: $txAudioKBitRate, '
      'txVideoKBitRate: $txVideoKBitRate, upRtt: $upRtt,downRtt:$downRtt '
      'txAudioPacketLossRate: $txAudioPacketLossRate, '
      'txVideoPacketLossRate: $txVideoPacketLossRate, '
      'txAudioPacketLossSum: $txAudioPacketLossSum, '
      'txVideoPacketLossSum: $txVideoPacketLossSum, '
      'txAudioJitter: $txAudioJitter, txVideoJitter: $txVideoJitter, '
      'rxAudioPacketLossRate: $rxAudioPacketLossRate, '
      'rxVideoPacketLossRate: $rxVideoPacketLossRate, '
      'rxAudioPacketLossSum: $rxAudioPacketLossSum, '
      'rxVideoPacketLossSum: $rxVideoPacketLossSum, '
      'rxAudioJitter: $rxAudioJitter, rxVideoJitter: $rxVideoJitter}';
}