title: Is there any way to get a list of users for a custom audience?
body: <p>Getting other details is easy, but there doesn't seem to be any API accessible way to get a list of users (or even approximate users) for the audience.  You can add them, and delete them (?!) but not enumerate all the users in the list.</p>
  
  <p>Is that truly the case, or am I missing something?</p>