Board (discussions) in VkApi for android?

Question

Java

I draw an output in the ListView discussion from the group
VKParameters param = new VKParameters();
param.put(VKApiConst.GROUP_ID, group);
VKRequest result = new VKRequest(String.format(Locale.US, "%s.%s", "board", "getTopics"),
param, VKRequest.HttpMethod.GET, VKApiTopicArray.class);
result.executeWithListener(new VKRequest.VKRequestListener() {
@Override
public void onComplete(VKResponse response) {
super.onComplete(response);
topics = (VKApiTopicArray)response.parsedModel;
StringBuilder sb = new StringBuilder();
for (VKApiTopic topic : topics) {
sb.append(topic.title);
sb.append("\r\n\r\n");
}
arr_list.add(sb.toString());
listView.setAdapter(adapter);
}});
All discussions come true! But the question is, how to implement the login method to the desired discussion topic? Do you also need to do some kind of VKRequest?