docs: public SpotFleetLaunchSpecification withNetworkInterfaces(InstanceNetworkInterfaceSpecification... networkInterfaces) {
          if (this.networkInterfaces == null) {
              setNetworkInterfaces(new com.amazonaws.internal.SdkInternalList<InstanceNetworkInterfaceSpecification>(networkInterfaces.length));
          }
          for (InstanceNetworkInterfaceSpecification ele : networkInterfaces) {
              this.networkInterfaces.add(ele);
          }
          return this;
      }