}

    private static class TestCompleteEventSerializer implements Serializer<TestCompleteEvent> {
        private final Serializer<TestResult.ResultType> typeSerializer = new NullableSerializer<TestResult.ResultType>(new BaseSerializerFactory().getSerializerFor(TestResult.ResultType.class));

        @Override
        public TestCompleteEvent read(Decoder decoder) throws Exception {
            long endTime = decoder.readLong();

        return new TestStartEvent(clock.getCurrentTime(), parentId);
    }

    private TestCompleteEvent completeEvent() {
        return completeEvent(null);
    }

    private TestCompleteEvent completeEvent(@Nullable ResultType resultType) {
        return new TestCompleteEvent(clock.getCurrentTime(), resultType);
    }

    private boolean wasStarted(TestIdentifier testIdentifier) {