### Question:
BackendTranslationService extends AbstractTranslationService { @Override public Optional<String> getElementName(String uuid) { return Optional.of(uuid); }  @Override String getValue(String key); @Override String getValue(String key, Object... args); @Override Optional<String> getElementName(String uuid);  }### Answer:
@Test public void testGetElementName() { assertTrue(tested.getElementName("element1").isPresent()); assertEquals("element1", tested.getElementName("element1").get()); }