KnpLabs/KnpOAuthBundle — comment on commit b54f242e90bbaaefd17fa78fd1ace94b740f37c0
File: Security/Core/UserProvider/EntityUserProvider.php line 26
By stloyd:

This will be always `null`. To make this working we need changing from `private` to `protected` in [parent](https://github.com/symfony/symfony/blob/master/src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php) class.

Also entity manager is no longer available.