code: private void doInBackup(List<DelayedEntry> delayedEntries) {
          writeBehindProcessor.callBeforeStoreListeners(delayedEntries);
          removeFinishedStoreOperationsFromQueues(mapName, delayedEntries);
          writeBehindProcessor.callAfterStoreListeners(delayedEntries);
      }
docs: Process write-behind queues on backup partitions. It is a fake processing and
  it only removes entries from queues and does not persist any of them.
  
  @param delayedEntries entries to be processed.