@Override
  public void incSenders(boolean shared, boolean preserveOrder, long start) {
    if (shared) {
      if (preserveOrder) {
        stats.incLong(sharedOrderedSenderConnectionsId, 1);
      } else {
        stats.incLong(sharedUnorderedSenderConnectionsId, 1);
      }
    } else {
      if (preserveOrder) {
        stats.incLong(threadOrderedSenderConnectionsId, 1);
      } else {
        stats.incLong(threadUnorderedSenderConnectionsId, 1);
      }
    }
    if (enableClockStats) {
      stats.incLong(senderCreateTimeId, getTime() - start);
    }
    stats.incLong(senderCreatesInProgressId, -1);
  }
@return the timestamp that marks the start of the operation
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionStats.java