/**
  * Get the Max of all the stats that are watched, for all the stats added with add() since the
  * last call to clear() in JSON.
  *
  * @return The Max of all the stats since last clear() in JSON.
  */
 public String getMaxJSON() {
   String str =
       String.format(
           FakeUserStats.jsonMediaStreamStatsTemplate,
           -1, // ssrc not needed here
           downloadJitterMs.getMax(),
           downloadPercentLoss.getMax(),
           downloadRateKiloBitPerSec.getMax(),
           jitterBufferDelayMs.getMax(),
           jitterBufferDelayPackets.getMax(),
           nbDiscarded.getMax(),
           nbDiscardedFull.getMax(),
           nbDiscardedLate.getMax(),
           nbDiscardedReset.getMax(),
           nbDiscardedShrink.getMax(),
           nbFec.getMax(),
           nbPackets.getMax(),
           nbPacketsLost.getMax(),
           nbReceivedBytes.getMax(),
           nbSentBytes.getMax(),
           packetQueueCountPackets.getMax(),
           packetQueueSize.getMax(),
           percentDiscarded.getMax(),
           rttMs.getMax(),
           uploadJitterMs.getMax(),
           uploadPercentLoss.getMax(),
           uploadRateKiloBitPerSec.getMax());
   return str;
 }