public void endMessage(long start) {
    long ts = DistributionStats.getStatTime();

    // Increment number of notifications
    _stats.incInt(_messagesProcessedId, 1);

    // Increment notification time
    long elapsed = ts - start;
    _stats.incLong(_messageProcessingTimeId, elapsed);
  }
Increments the "messagesProcessed" and "messageProcessingTime" stats.

@param start The start of the message (which is decremented from the current time to determine
       the message processing time).
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheClientProxyStats.java