Spring Boot PostgreSQL, Neo4j and Atomikos XA transaction manager

Drivers & Stacks Spring Data Neo4j & Neo4j-OGM
1

In Spring Boot application I have configured 2 different transaction managers:

@Bean("jpaTransactionManager")
public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
    JpaTransactionManager transactionManager = new JpaTransactionManager();
    transactionManager.setEntityManagerFactory(entityManagerFactory);
    return transactionManager;
}

@Bean("neo4jTransactionManager")
public Neo4jTransactionManager transactionManager() {
    return new Neo4jTransactionManager(sessionFactory());
}

Also, I have a separate services for PostgreSQL and Neo4j databases:

@Service("postgreSQLUserService")
@Transactional("jpaTransactionManager")
public class UserServiceImpl implements UserService {

    @Autowired
    private UserRepository userRepository;

    @Override
    public User create() {
        return userRepository.save(new User());
    }

.....

@Service("neo4jUserService")
@Transactional("neo4jTransactionManager")
public class UserServiceImpl implements UserService {

    @Autowired
    private UserRepository userRepository;


    @Override
    public User create() {
        return userRepository.save(new User());
    }

Separately such services work like expected and correctly communicate with PostgreSQl and Neo4j database. Right now I need to configure something like XA transactions. I need to be able in scope of one method to atomically create users in PostgreSQL and Neo4j database. In case one of the operation fail, I need also to rollback changes from another database, something like that:

@Transactional
public void createUser() {
    postgreSQLUserService.create();
    neo4jUserService.create();
}

I think, I may use Atomikos transaction manager in order to achieve it but don't know is it a right way. Could you please show an example how to configure XA transaction manager for such case?

UPDATED

Based on the following answer Does Neo4j still support XA transactions? - Stack Overflow looks like XA support was dropped from Neo4j... So the only way to implement such functionality is to implement Saga microservice pattern?