### Question:
SQLRecordLookupService extends AbstractSQLLookupService<Record> { @Override public Set<String> getRequiredKeys() { return Collections.emptySet(); } SQLRecordLookupService(); @Override Set<String> getRequiredKeys(); @Override Class<?> getValueType(); @OnEnabled void onEnabled(final ConfigurationContext context);  }### Answer:
@Test public void testCorrectKeys() throws Exception { assertEquals(sqlRecordLookupService.getRequiredKeys(), Collections.emptySet()); }