@Override
  public String toString() {
    return "ClientQueueDetail [clientId=" + clientId + ", queueSize=" + queueSize
        + ", eventsEnqued=" + eventsEnqued + ", eventsRemoved=" + eventsRemoved
        + ", eventsConflated=" + eventsConflated + ", markerEventsConflated="
        + markerEventsConflated + ", eventsExpired=" + eventsExpired + ", eventsRemovedByQrm="
        + eventsRemovedByQrm + ", eventsTaken=" + eventsTaken + ", numVoidRemovals="
        + numVoidRemovals + "]";
  }
Number of void removals from the queue.
geode-core/src/main/java/org/apache/geode/management/ClientQueueDetail.java