'Create a new group.
:param str group_id: group ID. The driver can ignore this value.
:param dict group: group info. See group schema in
:class:`~.IdentityDriverBase`.
:returns: group, matching the group schema.
:rtype: dict
:raises keystone.exception.Conflict: If a duplicate group exists.'

@abc.abstractmethod
def create_group(self, group_id, group):

    raise exception.NotImplemented()
