Provide a lazy loader

[LeonardoFerreiraa]

When using example and getDefault call another factory, can cause duplicated data.

Example:

@Data
public class Phone {
    private String number;
    private Contact contact;
}

@Data
public class Contact {
    private String name;
}

@Component
public class ContactFactory extends JBacon<Contact> {
    
    @Autowired
    private ContactRepository contactRepository;

    @Override
    public Contact getDefault() {
        Contact contact = new Contact();
        contact.setName("teste");
        return contact;
    }

    @Override
    public Contact getEmpty() {
        return new Contact();
    }

    @Override
    public void persist(Contact contact) {
        contactRepository.save(contact);
    }
}

@Component
public class PhoneFactory extends JBacon<Contact> {
    
    @Autowired
    private PhoneRepository phoneRepository;

    @Autowired
    private ContactFactory contactFactory;

    @Override
    public Phone getDefault() {
        Phone phone = new Phone();
        phone.setNumber("16 99999-9999");
        phone.setContact(contactFactory.create());

        return phone;
    }

    @Override
    public Phone getEmpty() {
        return new Phone();
    }

    @Override
    public void persist(Phone phone) {
        phoneRepository.save(phone);
    }
}

In tests:

Contact contact = contactFactory.create(empty -> {
    empty.setName("Leonardo");
});
phoneFactory.create(5, empty -> {
    empty.setContact(contact);
});

6 Contacts will be persisted in database.

[LeonardoFerreiraa]

#11