Missing reference to make code usable

Web page documentation is missing some details on following page: // ...
http://www.doctrine-project.org/documentation/manual/1_0/pl/connections:get-connection-name
http://www.doctrine-project.org/documentation/manual/1_2/pl/connections:get-connection-name

I think they were just taken out of context from a page like:
http://www.doctrine-project.org/projects/orm/1.2/docs/manual/connections/en#get-connection-name
where a previous reference to manager .... oops, that page has no previous reference to '$manager' either!!!

Where does the $manager variable come into this? FWIW, I tried that code to get the connection name in a Symfony/Doctrine CLI Task, and it says, 'using object accessor on non object'. I'll keep working on what it's supposed to look like, but the last page above, and every page of documentation derived from it should be checked for the relevance and accuracy of the $manager variable.