setFriendListener method
设置关系链监听器
Implementation
@override
Future<void> setFriendListener({
required V2TimFriendshipListener listener,
}) async {
final String listenerUuid = Utils.generateUniqueString();
friendListenerList[listenerUuid] = listener;
return _channel.invokeMethod("setFriendListener", buildFriendManagerParam({"listenerUuid": listenerUuid}));
}