@Override
  public void incSentMessagesTime(long nanos) {
    if (enableClockStats) {
      stats.incLong(sentMessagesTimeId, nanos);
      long millis = NanoTimer.nanosToMillis(nanos);
      maxSentMessagesTime.recordMax(millis);
    }
  }
Increments the total number of nanoseconds spend sending messages.
<p>
This also sets the sentMessagesMaxTime, if appropriate
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionStats.java