@Override
                public void handleException(Throwable e) {
                    if (e instanceof IllegalStateException) {
                        counter.incrementAndGet();
                        throw new RuntimeException("Second exception");
                    }
                }
Test that we continue handling events after Event#handleException itself throws an exception.
server-common/src/test/java/org/apache/kafka/queue/KafkaEventQueueTest.java