Provide autowiring for Exporter class about exporter

[greg0ire]

See symfony/symfony-docs#9886 not sure if we should do that for no services at all, or allow doing it for services relevant to the end user

[greg0ire]

@OskarStark please see https://github.com/symfony/symfony-docs/blob/master/bundles/best_practices.rst#services, apparently the best practice is exactly what is proposed here.

[greg0ire]

@Jerome1337 would you please make a pull request for this?

[OskarStark]

IMO its not a best practice to do that for a third party bundle, but I can be wrong

No need to do it in PHP, you can define an alias in your services.yaml file

[soullivaneuh]

IMO its not a best practice

Where did you see that? It's done on many bundles. And how will you provide auto-wiring without this method?

The only better thing to do here is to provide an interface.