code: func TruncateUnexpectedEOF(truncate bool) FileStoreOption {
  	return func(o *FileStoreOptions) error {
  		o.TruncateUnexpectedEOF = truncate
  		return nil
  	}
  }
docs: // TruncateUnexpectedEOF indicates if on recovery the store should
  // truncate a file that reports an unexpected end-of-file (EOF) on recovery.
  // If set to true, the invalid record byte content is printed but the store
  // will truncate the file prior to this bad record and proceed with recovery.
  // Dataloss may occur.