def getReadGroupSet(self, id_):
        """
        Returns the ReadGroupSet with the specified name, or raises
        a ReadGroupSetNotFoundException otherwise.
        """
        if id_ not in self._readGroupSetIdMap:
            raise exceptions.ReadGroupNotFoundException(id_)
        return self._readGroupSetIdMap[id_]
dataset/ETHPy150Open ga4gh/server/ga4gh/datamodel/datasets.py/AbstractDataset.getReadGroupSet/original