protected override DriverResult Display(TwitterWidgetPart part, string displayType, dynamic shapeHelper)
        {
            // Get tweets, from the cache or from twitter
            var tweets = _cache.Get(String.Format(TwitterUserCacheKey, part.TwitterUserName), ctx =>
            {
                ctx.Monitor(_clock.When(TimeSpan.FromMinutes(part.CacheMinutes)));
                return(_twitter.GetLatestTweetsFor(part.TwitterUserName, part.MaxPosts));
            });

            return(ContentShape("Parts_TwitterWidget",
                                () => shapeHelper.Parts_TwitterWidget(
                                    TwitterUserName: part.TwitterUserName ?? String.Empty,
                                    Tweets: tweets)));
        }