code: public OperationFuture<Server> addSecondaryNetwork(Server server, AddNetworkConfig config) {
          ServerMetadata serverMetadata = findByRef(server);
  
          NetworkLink link = client.addSecondaryNetwork(
              idByRef(server),
              buildSecondaryNetworkRequest(config, serverMetadata.getLocationId())
          );
  
          return new OperationFuture<>(
              server,
              link.getOperationId(),
              experimentalQueueClient
          );
      }
docs: Add secondary network
  
  @param server server reference
  @param config secondary network config
  @return OperationFuture wrapper for Server