Usually the "listener"
is in the
directory and not your functions used through out your extension.
However, have a look at the Board Rules ACP Module, Line 30
. You can use the
to get a service, which is declared within your
Or if you're working with an admin controller yourself, which is declared in your
, you can add the functions file through a dependency.
You can read more about that in the 3.2.x Extension Docs