RedditStoreApp.ViewModels.SubredditViewModel.SubredditViewModel C# (CSharp) Метод

        public SubredditViewModel(Subreddit s)
        {
            _posts = new IncrementalObservableCollection<PostViewModel>(
                () => { return _subreddit.Posts.HasMore; },
                (uint count) =>
                {
                    Func<Task<LoadMoreItemsResult>> taskFunc = async () =>
                    {
                        this.IsLoading = true;
                        int newPosts = await _subreddit.Posts.More();

                        int currentPostCount = _posts.Count;
                        for (int i = currentPostCount; i < _subreddit.Posts.Count; i++)
                        {
                            _posts.Add(new PostViewModel(_subreddit.Posts[i]));
                        }
                        this.IsLoading = false;

                        return new LoadMoreItemsResult()
                        {
                            Count = (uint)newPosts
                        };                       
                    };
                    Task<LoadMoreItemsResult> loadMorePostsTask = taskFunc();
                    return loadMorePostsTask.AsAsyncOperation<LoadMoreItemsResult>();
                }
            );

            _subreddit = s;
            _refreshCommand = new RelayCommand(RefreshAction);
            _loadMoreCommand = new RelayCommand(LoadMoreAction);
        }