notifications
                                
                                 notifications copied to clipboard
                                
                                    notifications copied to clipboard
                            
                            
                            
                        "Call Object.freeze on action"
https://notifications.spec.whatwg.org/#object-members
Call Object.freeze on action, to prevent accidental mutation by scripts.
This should not call the author-overrideable Object.freeze. Instead, call SetIntegrityLevel(action, "frozen").
/cc @johnmellor
Which probably does not work due to IDL expecting us to use IDL objects. But I guess we can assume that distinction will be removed.
Meh, maybe throw in a "the JavaScript object corresponding to action"