code: public OperationFuture<Network> release(Network network, DataCenter dataCenter) {
          DataCenterMetadata dataCenterMetadata = dataCenterService.findByRef(dataCenter);
          NetworkMetadata networkMetadata = findByRef(network);
  
          networkClient.release(
              networkMetadata.getId(),
              dataCenterMetadata.getId()
          );
  
          return new OperationFuture<>(network, new NoWaitingJobFuture());
      }
docs: Release the network for datacenter
  
  @param dataCenter datacenter reference
  @return OperationFuture wrapper for network