final RepositoryConnection fc = repositoryRDF.getConnection();
try {
fc.begin();
final Facading facading = FacadingFactory.createFacading(fc);
final FooFacade ff = facading.createFacade(subject, FooFacade.class);
Assert.assertNull(ff.getString());
final String v = UUID.randomUUID().toString();
ff.setString(v);
Assert.assertEquals(v, ff.getString());
final RepositoryConnection fc2 = repositoryRDF.getConnection();
try {
fc2.begin();