docs: public GetCostAndUsageResult withResultsByTime(ResultByTime... resultsByTime) {
          if (this.resultsByTime == null) {
              setResultsByTime(new java.util.ArrayList<ResultByTime>(resultsByTime.length));
          }
          for (ResultByTime ele : resultsByTime) {
              this.resultsByTime.add(ele);
          }
          return this;
      }