builder.append(")");
props.put("openjpa.MetaDataFactory", builder.toString());
// bypass generic Persistence because it'll try to load the persistence-unit from persistence.xml
PersistenceProviderImpl provider = new PersistenceProviderImpl();
PersistenceUnitInfoImpl pui = new PersistenceUnitInfoImpl();
pui.fromUserProperties(props);
EntityManagerFactory emf = provider.createContainerEntityManagerFactory(pui, props);
EM = emf.createEntityManager();
getVersion(emf);
return EM;
}