lib.addAsManifestResource(getPersistenceXml(), "persistence.xml");
ear.addAsLibrary(lib);
JavaArchive override = ShrinkWrap.create(JavaArchive.class, "override.jar");
override.addClasses(Organisation.class, OrganisationBean.class, LibPersistenceUnitBean.class);
override.addAsManifestResource(getPersistenceXml(), "persistence.xml");
ear.addAsModule(override);
JavaArchive noOverride = ShrinkWrap.create(JavaArchive.class, "noOverride.jar");
noOverride.addClasses(EmployeeBean.class, PersistenceUnitPackagingTestCase.class);
ear.addAsModule(noOverride);