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

await session.on_client_event(None)
        assert client.log.pop() == {
            'status': 'error',
            'error': c.ERR_INVALID_EVENT,
        }

        await session.on_client_event('hello')
        assert client.log.pop() == {
            'status': 'error',
            'error': c.ERR_INVALID_EVENT,
        }

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

        await session.on_client_event({'event': None})
        assert client.log.pop() == {
            'status': 'error',
            'error': c.ERR_INVALID_EVENT,
        }

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

        await session.on_client_event({'event': 'hello'})

async def full_process(self):
        msg = {
            'status': 'error',
            'error': c.ERR_INVALID_EVENT,
        }
        await self.session.send(msg)
        return False

async def consumer_handler(self):
        try:
            ping_handler = asyncio.ensure_future(self.ping_handler())
            try:
                while True:
                    event = await self.websocket.recv()
                    try:
                        data = json.loads(event)
                    except json.decoder.JSONDecodeError:
                        self.session.log.warn('received invalid json')
                        await self.send({
                            "status": "error",
                            "error": c.ERR_INVALID_EVENT,
                        })
                    else:
                        await self.session.on_client_event(data)
            except websockets.ConnectionClosed:
                await self.session.on_close()

            ping_handler.cancel()
        except Exception:
            self.session.log.exception('unhandled error in consumer handler')