yiisoft/yii2 — pull request #3539 by myqlarson (2014-05-22 04:37:11+00:00)
Title: Update Module.php: `$controllerNamespace` documentation

It took me a while to figure out why my custom `$controllerNamespace` was not working. The requirement for setting up an alias should be in its documentation rather than, or in addition to, the method which uses the value.