List<String> getRandomWords() {
    return Arrays.asList(words);
  }
@Test
  public void testRandomTextDataGeneratorUniqueness() {
    RandomTextDataGenerator rtdg1 = new RandomTextDataGenerator(10, 1L, 5);
    Set<String> words1 = new HashSet(rtdg1.getRandomWords());

    RandomTextDataGenerator rtdg2 = new RandomTextDataGenerator(10, 0L, 5);
    Set<String> words2 = new HashSet(rtdg2.getRandomWords());
    
    assertFalse("List size mismatch across lists", words1.equals(words2));
  }