[Mailman-Developers] Handling additions to REST API in client side

Abhilash Raj writes:

There is no easy way to check for whether the Core has this attribute as API is versioned at 3.1 for both cases.

Barry has spoken (later, in a parallel thread) to the effect that this isn't a real problem "most" of the time. But to me it seems like the obvious ways are (1) to expose the whole API (as an HTTP collection attached at the version number -- Barry says this is hard, though), (2) to somehow ensure that client-side REST calls are transactional (I don't think this is possible), or (3) to provide the client a way to probe for an API that the server guarantees is a no-op, except for returning SUCCESS or NOTFOUND.

Steve