docs: public SpotFleetRequestConfigData withLaunchSpecifications(SpotFleetLaunchSpecification... launchSpecifications) {
          if (this.launchSpecifications == null) {
              setLaunchSpecifications(new com.amazonaws.internal.SdkInternalList<SpotFleetLaunchSpecification>(launchSpecifications.length));
          }
          for (SpotFleetLaunchSpecification ele : launchSpecifications) {
              this.launchSpecifications.add(ele);
          }
          return this;
      }