public void incEventsProcessedByPQRM(int delta) {
    stats.incInt(eventsProcessedByPQRMId, delta);
  }
Increments the "eventsProcessedByPQRM" stat by given delta.

@param delta an integer by which events are processed by queue removal message
geode-core/src/main/java/org/apache/geode/internal/cache/wan/GatewaySenderStats.java