docs: public GetBackupVaultNotificationsResult withBackupVaultEvents(BackupVaultEvent... backupVaultEvents) {
          java.util.ArrayList<String> backupVaultEventsCopy = new java.util.ArrayList<String>(backupVaultEvents.length);
          for (BackupVaultEvent value : backupVaultEvents) {
              backupVaultEventsCopy.add(value.toString());
          }
          if (getBackupVaultEvents() == null) {
              setBackupVaultEvents(backupVaultEventsCopy);
          } else {
              getBackupVaultEvents().addAll(backupVaultEventsCopy);
          }
          return this;
      }