### Question:
AnnotatedSubscriber extends AbstractSubscriber<T> { @Override protected void release() { observer = null; method = null; } AnnotatedSubscriber(@NonNull Object observer, @NonNull Method method); @Override boolean equals(Object other); @Override int hashCode();  }### Answer:
@Test public void testRelease() throws Exception { subscriber.release(); try { subscriber.acceptEvent(object); fail("Expected an NullPointerException to be thrown"); } catch (NullPointerException e) { assertTrue(true); } }