def parseExtensionArgs(self, args, is_openid1, strict=False):
        policies_str = args.get('auth_policies')
        if policies_str:
            auth_policies = policies_str.split(' ')
        elif strict:
            raise ValueError('Missing auth_policies')
        else:
            auth_policies = []

        if (len(auth_policies) > 1 and strict and AUTH_NONE in auth_policies):
            raise ValueError('Got some auth policies, as well as the special '
                             '"none" URI: %r' % (auth_policies,))

        if 'none' in auth_policies:
            msg = '"none" used as a policy URI (see PAPE draft < 5)'
            if strict:
                raise ValueError(msg)
            else:
                warnings.warn(msg, stacklevel=2)

        auth_policies = [u for u in auth_policies
                         if u not in ['none', AUTH_NONE]]

        self.auth_policies = auth_policies

        for (key, val) in args.items():
            if key.startswith('auth_level.'):
                alias = key[11:]

                # skip the already-processed namespace declarations
                if alias.startswith('ns.'):
                    continue

                try:
                    uri = args['auth_level.ns.%s' % (alias,)]
                except KeyError:
                    if is_openid1:
                        uri = self._default_auth_level_aliases.get(alias)
                    else:
                        uri = None

                if uri is None:
                    if strict:
                        raise ValueError(
                            'Undefined auth level alias: %r' % (alias,))
                else:
                    self.setAuthLevel(uri, val, alias)

        auth_time = args.get('auth_time')
        if auth_time:
            if TIME_VALIDATOR.match(auth_time):
                self.auth_time = auth_time
            elif strict:
                raise ValueError("auth_time must be in RFC3339 format")
Parse the provider authentication policy arguments into the
dataset/ETHPy150Open necaris/python3-openid/openid/extensions/draft/pape5.py/Response.parseExtensionArgs