docs: public CreateBudgetRequest withNotificationsWithSubscribers(NotificationWithSubscribers... notificationsWithSubscribers) {
          if (this.notificationsWithSubscribers == null) {
              setNotificationsWithSubscribers(new java.util.ArrayList<NotificationWithSubscribers>(notificationsWithSubscribers.length));
          }
          for (NotificationWithSubscribers ele : notificationsWithSubscribers) {
              this.notificationsWithSubscribers.add(ele);
          }
          return this;
      }