@Override
  protected AdminResponse createResponse(DistributionManager dm) {
    abortBackupFactory.createAbortBackup(dm.getCache()).run();
    return abortBackupFactory.createBackupResponse(getSender(), new HashSet<>());
  }
A request send from an admin VM to all of the peers to indicate that that should complete the
backup operation.
geode-core/src/main/java/org/apache/geode/internal/cache/backup/AbortBackupRequest.java