docs: public GetBackupVaultNotificationsResult withBackupVaultEvents(String... backupVaultEvents) {
          if (this.backupVaultEvents == null) {
              setBackupVaultEvents(new java.util.ArrayList<String>(backupVaultEvents.length));
          }
          for (String ele : backupVaultEvents) {
              this.backupVaultEvents.add(ele);
          }
          return this;
      }