@VisibleForTesting
  void unlockCMS(boolean locked) {
    if (locked) {
      cmsDlockService.unlock(CMS_DLOCK_SERVICE_NAME);
    }
  }
@return always return ResultModel for online command, for offline command, return either
        ResultModel or ExitShellRequest
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/remote/CommandExecutor.java