@Test
 public void testVersionedPackage() throws Exception {
   AdWordsServiceClientFactoryHelper helper =
       new AdWordsServiceClientFactoryHelper(
           adsServiceClientFactory,
           adsServiceDescriptorFactory,
           soapClientHandler,
           adsLibConfiguration);
   assertEquals("v201309", helper.determineVersion(TestService.class));
 }
 @Test
 public void testBadPackage() throws Exception {
   Mockito.when(adsLibConfiguration.getDuckTypedVersion()).thenReturn("BadPackage");
   AdWordsServiceClientFactoryHelper helper =
       new AdWordsServiceClientFactoryHelper(
           adsServiceClientFactory,
           adsServiceDescriptorFactory,
           soapClientHandler,
           adsLibConfiguration);
   assertEquals("BadPackage", helper.determineVersion(BadPackageService.class));
 }