What content would a automatically generated controller in Ember (Ember-CLI) have if I wrote it down explicitly?

In the official Ember documentation is a section describing automatically generated controllers, once the model in a route has been set:

http://ift.tt/1FKQuV7

I wonder what would be the explicit code pendant to this process? In the doc it says "If you did not define it, one will be generated for you." and I assume, this does not happen in form of some auto-generated code, but in memory only.

Can someone show how the simplest version of an

• ObjectController


• ArrayController


• Controller

would look like if you generated them in Ember-CLI by hand?