Entity Provider: improving-performance-with-a-join @ORM\ManyToMany

Is it possible to join a ManyToMany relation?
I got still 2 queries with that join.

How to Load Security Users from the Database (the Entity Provider)
http://symfony.com/doc/current/cookbook/security/entity_provider.html#improving-performance-with-a-join

[xabbuh]

Hey @bokonet, do you suggest to improve the documentation or is this more a support question? If it's the letter, you are better off asking this on IRC or on the mailing list. Otherwise, you should probably clarify what you want to be changed in which way.

Hey @xabbuh, i think its not possible to join a ManyToMany relation to improve performance. so that part of the documentation make no sense for me and should be updated. Am i wrong?