Resource DiscussionsDraftUpdater is used to update the various fields of the
DiscussionsDraft. It is not used directly. Instead, the user should pick
the updater that corresponds to the DiscussionsDraft's type:
TopicDraftUpdater, AnnouncementDraftUpdater, and DiscussionsMessageDraftUpdater.
Below are examples in XML formats. All examples are shown with all inherited members. Quoting when required is part of the examples, but you must obviously populate with your own data.