'Return the name of the pgroup snapshot that Purity will use'

@classmethod
def _get_pgroup_snap_name(cls, group_snapshot):

    group_id = cls._get_group_id_from_snap(group_snapshot)
    return ('%s.%s' % (cls._get_pgroup_name_from_id(group_id), cls._get_pgroup_snap_suffix(group_snapshot)))
