code: function clearCacheForRef(dbRef) {
  		var location = dbRef.toString().substring(dbRef.root.toString().length);
  
  		var promises = [];
  
  		acceptedOnVerbs.forEach(function (eventType) {
  			var storageKey = '@FirebaseLocalCache:' + eventType + ':' + location;
  			promises.push(_reactNative.AsyncStorage.removeItem(storageKey));
  		});
  
  		return Promise.all(promises);
  	}
docs: Remove the currently cached data for a particular database.Reference. If there are any listeners still active, they will re-write their data to the cache when the .off method is called.
  @param {firebase.database.Reference} dbRef Firebase database reference to clear.
  @returns {Promise} Promise that resolves once all cached data for this ref has been cleared.