Usando Firebase Realtime Database ¿Hay alguna forma de limpiar el oyente .on() que está en el oyente .on() anidado?

 useEffect(() => { const ChannelRef = database().ref(`/user/${uid}/channel`); ChannelRef.keepSynced(true); ChannelRef.on('child_added', channel_id => { var startTime = .... const threadRef = database().ref(`/channel/${channel_id.key}/Thread`).orderByKey().startAt(startTime); threadRef.keepSynced(true); threadRef.on('value', thread => {. <-------------------------------- How to cleanup this listenner ? dispatch({ type: 'AddThread', payload: thread.val() }); }) return () => { // CleanUp listenner ChannelRef.off(); ChannelRef.keepSynced(false); **// How to cleanup database().ref(`/channel/${channel_id.key}/Thread`).orderByKey().startAt(startTime) ?** } }, []