def add_alias(conn, hosted_zone_id, name, type, alias_hosted_zone_id,
              alias_dns_name, identifier=None, weight=None, comment=""):
    _add_del_alias(conn, hosted_zone_id, "CREATE", name, type, identifier,
                   weight, alias_hosted_zone_id, alias_dns_name, comment)
Add a new alias to a zone.  identifier and weight are optional.
dataset/ETHPy150Open denizalti/concoord/concoord/route53.py/add_alias