### Question:
DataHubClusterDeletionHandler extends EventSenderAwareHandler<EnvironmentDeletionDto> { @Override public String selector() { return DELETE_DATAHUB_CLUSTERS_EVENT.selector(); } protected  DataHubClusterDeletionHandler(EventSender eventSender, EnvironmentService environmentService, DatahubDeletionService datahubDeletionService); @Override void accept(Event<EnvironmentDeletionDto> environmentDtoEvent); @Override String selector();  }### Answer:
@Test @MockitoSettings(strictness = Strictness.LENIENT) void selector() { assertThat(underTest.selector()).isEqualTo("DELETE_DATAHUB_CLUSTERS_EVENT"); }