def get_starred_actors(movies, movie_name):
    """
    Query helper to get the ACTORS that have starred in a movie.
    :param movies: Dictionary (name of the movie --> Movie Node for the movie)
    :param movie_name: Name of the movie to get the ACTORS for.
    :return: List of ACTORS that have starred in the movie if there exists a node for it,
    else an empty list.
    """
    if movie_name in movies:
        return movies[movie_name].actors
    return []