@Override
  protected boolean mayNotifySerialGatewaySender(ClusterDistributionManager dm) {
    return notifiesSerialGatewaySender(dm);
  }
This method is called by both operateOnPartitionedRegion() when processing a remote msg or by
sendMsgByBucket() when processing a msg targeted to local Jvm. PartitionedRegion Note: It is
very important that this message does NOT cause any deadlocks as the sender will wait
indefinitely for the acknowledgment

@param r partitioned region eventSender the endpoint server who received request from client
       lastModified timestamp for last modification
@return If succeeds, return true, otherwise, throw exception
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/PutAllPRMessage.java