Hello,

I'm constantly wondering myself which Interface are picked up by the container to add service tag automatically when you use autoconfigure: true config.

The documentations mentions the Twig_ExtensionInterface Interface, but It would be awesome to have a command that tells us all the interfaces and classes that will apply a tag to my autoconfigured service.

ex: bin/console debug:autotags <--- not a good name, but 😅

PS: Is this already possible to know that (even without a command) ? If so I'd like to know how.