Where to store interfaces in Symfony 2?

Question

symfony

I mean dir. Where they usually lay down.

Answer 1

Personally, I organize files like this:
%BUNDLE_NAME%/service/%SERVICE_NAME%/interfaces

Answer 2

in the same directory as the class itself. (entity interfaces in entity, repository interfaces in repository, etc.).
https://github.com/Sylius/Sylius/tree/master/src/S...
https://github.com/akeneo/pim-community-dev/tree/m...