docs: public GetScalingPlanResourceForecastDataResult withDatapoints(Datapoint... datapoints) {
          if (this.datapoints == null) {
              setDatapoints(new java.util.ArrayList<Datapoint>(datapoints.length));
          }
          for (Datapoint ele : datapoints) {
              this.datapoints.add(ele);
          }
          return this;
      }