@Override
    public StoredEntityListPreferences get(final StoredEntityListPreferencesId preferencesId) {
        return this.db.findOneById(preferencesId);
    }
@Test
    public void returnsNullWhenFetchingPreferenceFromEmptyDB() {
        final StoredEntityListPreferences storedEntityListPreferences = toTest.get(wrongId);
        assertNull(storedEntityListPreferences);
    }