Destroyable.own supports Deferred but not documented

Hello !

dijit.Destroyable.own source code indicates than this method accepts Deferred objects. Nevertheless this is not documented. Is there any reason for that?

Deferred reference documentation could mention it too. Any strategies, « patterns » related to the prévention of callback calls and Deferred cancellation due to the destruction of the Destroyable - widget or else- targetted by callbacks would be welcome too.

Thank you.