Suggestion - Missing documentation for 'scheduleUpdate'

I’ve got this singleton object and I called ‘scheduleUpdate()’ so that it invokes the ‘update()’ method constantly.

It did not work because my singleton object is not a child of anything at all. To fix that, what I did was made it a child of the Layer: addChild(MySingleton::sharedObject());

Maybe I missed it somewhere in the documentation, but I thought it would be helpful to someone in the future if this was documented.