public static FromEndOfWindow pastEndOfWindow() {
    return new FromEndOfWindow();
  }
@Test
  public void testToStringExcludesNeverTrigger() {
    Trigger trigger =
        AfterWatermark.pastEndOfWindow()
            .withEarlyFirings(Never.ever())
            .withLateFirings(Never.ever());

    assertEquals("AfterWatermark.pastEndOfWindow()", trigger.toString());
  }