docs: public GetReservationUtilizationResult withUtilizationsByTime(UtilizationByTime... utilizationsByTime) {
          if (this.utilizationsByTime == null) {
              setUtilizationsByTime(new java.util.ArrayList<UtilizationByTime>(utilizationsByTime.length));
          }
          for (UtilizationByTime ele : utilizationsByTime) {
              this.utilizationsByTime.add(ele);
          }
          return this;
      }