docs: public void setLaunchSpecifications(java.util.Collection<SpotFleetLaunchSpecification> launchSpecifications) {
          if (launchSpecifications == null) {
              this.launchSpecifications = null;
              return;
          }
  
          this.launchSpecifications = new com.amazonaws.internal.SdkInternalList<SpotFleetLaunchSpecification>(launchSpecifications);
      }