@_auth_return_future
    def get_authenticated_user(self, callback, http_client=None):
        # Verify the OpenID response via direct request to the OP
        args = dict((k, v[-1]) for k, v in self.request.arguments.items())
        args["openid.mode"] = u("check_authentication")
        url = self._OPENID_ENDPOINT
        if http_client is None:
            http_client = self.get_auth_http_client()
        http_client.fetch(url, self.async_callback(
            self._on_authentication_verified, callback),
            method="POST", body=urllib_parse.urlencode(args))
Add the index commands fluently specified on columns:
dataset/ETHPy150Open D-L/SimpleBookMarks/src/tornado/auth.py/OpenIdMixin.get_authenticated_user--crossover with--dataset/ETHPy150Open sdispater/orator/orator/schema/blueprint.py/Blueprint._add_fluent_indexes