code: def runGetReadGroup(self, id_):
          
          compoundId = datamodel.ReadGroupCompoundId.parse(id_)
          dataset = self.getDataRepository().getDataset(compoundId.dataset_id)
          readGroupSet = dataset.getReadGroupSet(compoundId.read_group_set_id)
          readGroup = readGroupSet.getReadGroup(id_)
          return self.runGetRequest(readGroup)
docs: Returns a read group with the given id_