docs: public DescribeFleetsResult withFleets(FleetData... fleets) {
          if (this.fleets == null) {
              setFleets(new com.amazonaws.internal.SdkInternalList<FleetData>(fleets.length));
          }
          for (FleetData ele : fleets) {
              this.fleets.add(ele);
          }
          return this;
      }