docs: def v1_folder_list(request, kvlclient):
      '''Retrieves a list of folders for the current user.
  
      The route for this endpoint is: ``GET /dossier/v1/folder``.
  
      (Temporarily, the "current user" can be set via the
      ``annotator_id`` query parameter.)
  
      The payload returned is a list of folder identifiers.
      '''
      return sorted(imap(attrgetter('name'),
                         ifilter(lambda it: it.is_folder(),
                                 new_folders(kvlclient, request).list('/'))))