### Question:
I18nManagerCacheWrapper extends AbstractGenericCacheWrapper<ApsProperties> implements II18nManagerCacheWrapper { @Override public ApsProperties getLabelGroup(String key) { return super.get(this.getCacheKeyPrefix() + key, ApsProperties.class); }  @Override void initCache(II18nDAO i18nDAO); @Override Map<String, ApsProperties> getLabelGroups(); @Override ApsProperties getLabelGroup(String key); @Override void addLabelGroup(String key, ApsProperties labels); @Override void updateLabelGroup(String key, ApsProperties labels); @Override void removeLabelGroup(String key);  }### Answer:
@Test public void getLabelsGroup() throws Exception { ApsProperties properties = this.cacheWrapper.getLabelGroup(TEST_KEY); Assert.assertNotNull(properties); Assert.assertEquals("ciao", properties.get("it")); }