public async Task GetMentionsTimeline(int count, AdvancedTweet lastTweet)
        {
            TwitterClient client = new TwitterClient(accessToken);
            var           list   = await client.GetTimeline(count, lastTweet, "https://api.twitter.com/1.1/statuses/mentions_timeline.json");

            InsertTweet(list);
        }
        private void InsertLastButton()
        {
            var button = new AdvancedTweet(this);

            button.tweetRole = AdvancedTweet.TweetRoles.LoadButton;
            tweetList.Add(button);
        }
        /*ホームタイムラインを取得するメソッド*/
        public async Task GetHomeTimeline(int count, AdvancedTweet oldTweet)
        {
            TwitterClient client = new TwitterClient(accessToken);
            var           list   = await client.GetTimeline(count, oldTweet, "https://api.twitter.com/1.1/statuses/home_timeline.json");

            InsertTweet(list);
            InsertLastButton();
        }
        public async Task GetUserTimeline(int count, AdvancedTweet oldTweet)
        {
            TwitterClient client = new TwitterClient(accessToken);
            var           list   = await client.GetUserTimeline(count, userScreenName, oldTweet);

            InsertTweet(list);
            InsertLastButton();
        }
        public async Task GetSearchResultTimeline(string word, int count, AdvancedTweet lastTweet)
        {
            lastWord = word;
            TwitterClient client = new TwitterClient(accessToken);
            var           list   = await client.GetSearchResult(count, lastTweet, word);

            InsertTweet(list);
            InsertLastButton();
        }