### Question:
MahoutRecommender implements Recommender { @Override public long[] recommend(String taskName, int userID) { return recommend(taskName, null, null, null, userID); }  @Override long[] recommend(String taskName, int userID); @Override long[] recommend(final String taskName, final Float threshold, final int userID); @Override long[] recommend(String taskName, String similarity, String neighborhood, Float threshold, int userID); void buildRecommend(String taskName); void evaluate(String taskName); void IRState(String taskName);  }### Answer:
@Test public void recommend() { long[] mmsnsarticles = recommender.recommend("mmsnsarticle", 10); System.out.println(StringUtils.join(mmsnsarticles, ',')); }