newcoffeemaker doesn't return ID

In documentation it says that it should return the ID of newly created coffeemaker but it doesn't.

Just add a line when creating status object in NewMaker method of class CoffeeMakerRESTServer... something like:
do:'$$$ISERR(sc) result.%Set("Message","New maker saved with ID: "_cm.%Id())

Start with the NewMaker method of the CoffeeMakerRESTServer class and the code that creates the status object. Confirm how the response currently represents a newly created coffeemaker, then verify that the response includes its ID as described in the documentation.

Written by the indexing model from the issue text.