code: public OperationFuture<List<Server>> removeAutoscalePolicyOnServer(List<Server> serverList) {
          List<JobFuture> jobs = serverList
              .stream()
              .map(server -> removeAutoscalePolicyOnServer(server).jobFuture())
              .collect(toList());
  
          return
              new OperationFuture<>(
                  serverList,
                  new ParallelJobsFuture(jobs)
              );
      }
docs: remove autoscale policy on servers
  
  @param serverList server list
  @return OperationFuture wrapper for server list