### Question:
PlingStemmer implements Stemmer { @Override public String stem(String token) { return javatools.parsers.PlingStemmer.stem(token); }  @Override String stem(String token); @Override void initialize(String dictionary);  }### Answer:
@Test public void test() throws Exception { assertEquals("word", PlingStemmer.stem("word")); assertEquals("word", PlingStemmer.stem("words")); assertEquals("playing", PlingStemmer.stem("playing")); assertEquals("fly", PlingStemmer.stem("flies")); }