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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def user_get(self, domain, userid):
 """ Retrieve a user from the server :param AuthDomain domain: The authentication domain for the user. :param userid: The user ID. :raise: :exc:`couchbase.exceptions.HTTPError` if the user does not exist. :return: :class:`~.HttpResult`. The user can be obtained from the returned object's `value` property. """

        path = self._get_management_path(domain, userid)
        return self.http_request(path=path,
                                 method='GET')