### Question:
IdBrokerMappingsDeleteHandler extends EventSenderAwareHandler<EnvironmentDeletionDto> { @Override public String selector() { return DELETE_IDBROKER_MAPPINGS_EVENT.selector(); } protected  IdBrokerMappingsDeleteHandler(EventSender eventSender, EnvironmentService environmentService, GrpcIdbmmsClient idbmmsClient); @Override void accept(Event<EnvironmentDeletionDto> environmentDtoEvent); @Override String selector();  }### Answer:
@MockitoSettings(strictness = Strictness.WARN) @Test void selectorTest() { assertThat(underTest.selector()).isEqualTo(DELETE_IDBROKER_MAPPINGS_EVENT.selector()); }