I think defaulting to UnsupportedOperationException is a good choice. This shouldn't break existing usages of 3rd party implementations, since they wouldn't be calling those APIs anyway.
On Fri, Mar 18, 2022 at 10:55 PM John Hendrikx <john.hendr...@gmail.com> wrote: > > [...] > EventTarget is already public API, and so there might be 3rd party > implementations. This means that the methods added to the EventTarget > interface must be default methods. It would be super if these default > implementations would just work out of the box, but that would require > exposing the internal class EventHandlerManager (and adding a > `getEventHandlerManager` to the `EventTarget` interface). If that's not > realistic, then initially the default implementations would have to > throw UnsupportedOperationException. > > --John >
