code: public OperationFuture<List<DataCenter>> claim(List<DataCenter> dataCenters) {
          List<JobFuture> jobs = dataCenters
              .stream()
              .map(dataCenter -> claim(dataCenter).jobFuture())
              .collect(toList());
  
          return
              new OperationFuture<>(
                  dataCenters,
                  new ParallelJobsFuture(jobs)
              );
      }
docs: Claim a networks for datacenters
  
  @param dataCenters datacenter reference list
  @return OperationFuture wrapper for dataCenter list