docs: public DescribeScalingPlansResult withScalingPlans(ScalingPlan... scalingPlans) {
          if (this.scalingPlans == null) {
              setScalingPlans(new java.util.ArrayList<ScalingPlan>(scalingPlans.length));
          }
          for (ScalingPlan ele : scalingPlans) {
              this.scalingPlans.add(ele);
          }
          return this;
      }