docs: public ListBackupSelectionsResult withBackupSelectionsList(BackupSelectionsListMember... backupSelectionsList) {
          if (this.backupSelectionsList == null) {
              setBackupSelectionsList(new java.util.ArrayList<BackupSelectionsListMember>(backupSelectionsList.length));
          }
          for (BackupSelectionsListMember ele : backupSelectionsList) {
              this.backupSelectionsList.add(ele);
          }
          return this;
      }