How can I use a registered controller in my angular directive?

Question

I have a controller registered like this:

myModule.controller(\'MyController\', function ($scope, ...some dependencies...)
{
    ....

Using

Answer 1

It appears that you can just use:

controller: 'MyController' 

IF the controller is in the same module as the directive or a higher level module composed of the module with the directive in it.

When I tried it with two different modules composed into an app module (one for the controller and one for the directive), that did not work.