@Test
public void checkRetrieveThingsWithEmptyJsonFieldSelectorBehavesEquallyAsOmittingFields() {

    final JsonFieldSelector selectedFields = JsonFactory.newFieldSelector(null, JSON_PARSE_OPTIONS);
    final RetrieveThings retrieveThings = RetrieveThings
            .getBuilder(TestConstants.Thing.THING_ID, ThingId.inDefaultNamespace("AnotherThingId"))
            .selectedFields(selectedFields)
            .build();
    final RetrieveThings retrieveThings2 =
            RetrieveThings.getBuilder(TestConstants.Thing.THING_ID, ThingId.inDefaultNamespace("AnotherThingId"))
                    .build();
    assertThat(retrieveThings).isEqualTo(retrieveThings2);
}