This article is deprecated.
Deprecation note: The RsvpForm object is being deprecated. Use
the Form() object instead.
Using an RsvpForm, you can build custom RSVP experiences for your events.
You will need to have at least one existing event to create an RsvpForm.
RsvpForm using the createEventRsvpForm()
method with the ID retrieved above.getRsvpData() method.FormValue array and use the submit() method
to submit the values.