@Override
  public boolean shouldFire(TriggerStateMachine.TriggerContext context) {
    return false;
  }
@Test
  public void falseAfterEndOfWindow() throws Exception {
    triggerTester.injectElements(TimestampedValue.of(1, new Instant(1)));
    IntervalWindow window =
        new IntervalWindow(new Instant(0), new Instant(0).plus(Duration.standardMinutes(5)));
    assertThat(triggerTester.shouldFire(window), is(false));
    triggerTester.advanceInputWatermark(BoundedWindow.TIMESTAMP_MAX_VALUE);
    assertThat(triggerTester.shouldFire(window), is(false));
  }