### Question:
BackendTranslationService extends AbstractTranslationService { @Override public String getValue(String key) { return key; }  @Override String getValue(String key); @Override String getValue(String key, Object... args); @Override Optional<String> getElementName(String uuid);  }### Answer:
@Test public void testGetValue() { assertEquals("key1", tested.getValue("key1")); }
@Test public void testGetValueWithArgs() { assertEquals("key1[arg1, arg2]", tested.getValue("key1", "arg1", "arg2")); }