def registration_endpoint(self, **kwargs):
        """

        :param request: The request
        :param authn: Client authentication information
        :param kwargs: extra keyword arguments
        :return: A Response instance
        """

        _request = RegistrationRequest().deserialize(kwargs['request'], "json")
        try:
            _request.verify(keyjar=self.keyjar)
        except InvalidRedirectUri as err:
            msg = ClientRegistrationError(error="invalid_redirect_uri",
                                          error_description="%s" % err)
            return BadRequest(msg.to_json(), content="application/json")
        except (MissingPage, VerificationError) as err:
            msg = ClientRegistrationError(error="invalid_client_metadata",
                                          error_description="%s" % err)
            return BadRequest(msg.to_json(), content="application/json")

        # If authentication is necessary at registration
        if self.authn_at_registration:
            try:
                self.verify_client(kwargs['environ'], _request,
                                   self.authn_at_registration)
            except (AuthnFailure, UnknownAssertionType):
                return Unauthorized()

        client_restrictions = {}
        if 'parsed_software_statement' in _request:
            for ss in _request['parsed_software_statement']:
                client_restrictions.update(self.consume_software_statement(ss))
            del _request['software_statement']
            del _request['parsed_software_statement']

        try:
            client_id = self.create_new_client(_request, client_restrictions)
        except CapabilitiesMisMatch as err:
            msg = ClientRegistrationError(error="invalid_client_metadata",
                                          error_description="%s" % err)
            return BadRequest(msg.to_json(), content="application/json")
        except RestrictionError as err:
            msg = ClientRegistrationError(error="invalid_client_metadata",
                                          error_description="%s" % err)
            return BadRequest(msg.to_json(), content="application/json")

        return self.client_info(client_id)
dataset/ETHPy150Open rohe/pyoidc/src/oic/extension/provider.py/Provider.registration_endpoint/original