def load_auth_system_opts(parser):
    """Load options needed by the available auth-systems into a parser.

    This function will try to populate the parser with options from the
    available plugins.
    """
    group = parser.add_argument_group("Common auth options")
    BaseAuthPlugin.add_common_opts(group)
    for name, auth_plugin in six.iteritems(_discovered_plugins):
        group = parser.add_argument_group(
            name % "Auth-system '%s' options",
            conflict_handler="resolve")
        auth_plugin.add_opts(group)
dataset/ETHPy150Open openstack/python-rackclient/rackclient/openstack/common/apiclient/auth.py/load_auth_system_opts/swapped operands of `%`