You can obtain free community support for example through stackoverflow, or also through the Symfony2 mailing list.
If you think you found a bug, please create a ticket in the bug tracker.
If you take code quality seriously, try out the new continuous inspection service.
JMSDiExtraBundle adds more powerful dependency injection features to Symfony2:
The code is released under the business-friendly Apache2 license.
Documentation is subject to the Attribution-NonCommercial-NoDerivs 3.0 Unported license.