code: public PagedList<CloudPool> listPools(DetailLevel detailLevel) throws BatchErrorException, IOException {
          return listPools(detailLevel, null);
      }
docs: Lists the {@link CloudPool pools} in the Batch account.
  
  @param detailLevel
  A {@link DetailLevel} used for filtering the list and for
  controlling which properties are retrieved from the service.
  @return A list of {@link CloudPool} objects.
  @throws BatchErrorException
  Exception thrown when an error response is received from the
  Batch service.
  @throws IOException
  Exception thrown when there is an error in
  serialization/deserialization of data sent to/received from the
  Batch service.