docs: public ListBackupPlansResult withBackupPlansList(BackupPlansListMember... backupPlansList) {
          if (this.backupPlansList == null) {
              setBackupPlansList(new java.util.ArrayList<BackupPlansListMember>(backupPlansList.length));
          }
          for (BackupPlansListMember ele : backupPlansList) {
              this.backupPlansList.add(ele);
          }
          return this;
      }