### Question:
ProcessEngineEventsAggregator extends BaseCommandContextEventsAggregator<CloudRuntimeEvent<?,?>, MessageProducerCommandContextCloseListener> { @Override protected MessageProducerCommandContextCloseListener getCloseListener() { return closeListener; } ProcessEngineEventsAggregator(MessageProducerCommandContextCloseListener closeListener); @Override void add(CloudRuntimeEvent<?, ?> element);  }### Answer:
@Test public void getCloseListenerShouldReturnTheCloserListenerPassedInTheConstructor() { MessageProducerCommandContextCloseListener retrievedCloseListener = eventsAggregator.getCloseListener(); assertThat(retrievedCloseListener).isEqualTo(closeListener); }