public static bool IsWatched(this TraktMovie movie)
{
if (WatchedMovies == null)
return false;
return WatchedMovies.Any(m => ((m.Movie.Ids.Trakt == movie.Ids.Trakt) && m.Movie.Ids.Trakt != null) ||
((m.Movie.Ids.Imdb == movie.Ids.Imdb) && m.Movie.Ids.Imdb.ToNullIfEmpty() != null) ||
((m.Movie.Ids.Tmdb == movie.Ids.Tmdb) && m.Movie.Ids.Tmdb != null));
}