addFriendListener method
Implementation
@override
Future<void> addFriendListener({
required V2TimFriendshipListener listener,
}) async {
final String uuid = Utils.generateUniqueString();
friendListenerList[uuid] = listener;
return await _channel.invokeMethod(
"addFriendListener",
buildFriendManagerParam(
{
"listenerUuid": uuid,
},
),
);
}