Define a controller that is specific to a directive in ngdocs

Question

I am using ngdocs to document my AngularJS application. I have a controller in the API that is specific to the directive itself. I have attempted to document this as @module.directive:dirName.controller:ControllerName, but this doesn't seem to tag this properly and the controller ends up being documented under a new module labeled as module.directive:directiveName. Should I just document this under the module? Anyone have any thoughts on the best way to do this?