How to use the socketshark.constants.ERR_NEEDS_TICKET function in socketshark

async def test_auth_ticket(self):
        """
        Test ticket authentication.
        """
        shark = SocketShark(TEST_CONFIG)
        client = MockClient(shark)
        session = client.session

        await session.on_client_event({'event': 'auth'})
        assert client.log.pop() == {
            'status': 'error',
            'event': 'auth',
            'error': c.ERR_NEEDS_TICKET,
        }

        await session.on_client_event({'event': 'auth', 'method': 'ticket'})
        assert client.log.pop() == {
            'status': 'error',
            'event': 'auth',
            'error': c.ERR_NEEDS_TICKET,
        }

        with aioresponses() as mock:
            # Auth endpoint unreachable
            await session.on_client_event({
                'event': 'auth',
                'method': 'ticket',
                'ticket': 'the_ticket',
            })

async def process(self):
        if self.method not in self.auth_config:
            raise EventError(c.ERR_AUTH_UNSUPPORTED)

        # The only supported method.
        assert self.method == 'ticket'

        auth_method_config = self.auth_config[self.method]

        ticket = self.data.get('ticket')
        if not ticket:
            raise EventError(c.ERR_NEEDS_TICKET)

        auth_url = auth_method_config['validation_url']
        auth_fields = auth_method_config['auth_fields']
        result = await http_post(self.shark, auth_url, {'ticket': ticket})
        if result.get('status') != 'ok':
            raise EventError(result.get('error', c.ERR_AUTH_FAILED))
        auth_info = {field: result[field] for field in auth_fields}
        self.session.auth_info = auth_info
        self.session.log.debug('auth info', auth_info=auth_info)
        await self.send_ok()
        return True