How to use the emmett.asgi.handlers.Handler.on_event function in emmett

    @Handler.on_event('websocket.receive')
    async def event_receive(self, scope, receive, send, event):
        await scope['emt.wsqueue'].put(event.get('bytes') or event['text'])
        return _event_looper

    @Handler.on_event('http.disconnect')
    async def event_disconnect(self, scope, receive, send, event):
        return

    @Handler.on_event('websocket.disconnect')
    async def event_disconnect(self, scope, receive, send, event):
        return

    @Handler.on_event('lifespan.shutdown')
    async def event_shutdown(self, scope, receive, send, event):
        await send({'type': 'lifespan.shutdown.complete'})

    @Handler.on_event('lifespan.startup')
    async def event_startup(self, scope, receive, send, event):
        await send({'type': 'lifespan.startup.complete'})
        return _event_looper

    @Handler.on_event('http.request')
    async def event_request(self, scope, receive, send, event):
        scope['emt.input'].append(event['body'])
        if not event.get('more_body', False):
            scope['emt.input'].set_complete()
        return _event_looper