code: def get_list_url(self, kind_slug=None):
          
          if kind_slug is None:
              kind_slug = self.KIND_SLUGS[self.kind]
          return reverse('spectator:events:work_list',
                                              kwargs={'kind_slug': kind_slug})
docs: Get the list URL for this Work.
          You can also pass a kind_slug in (e.g. 'movies') and it will use that
          instead of the Work's kind_slug. (Why? Useful in views. Or tests of
          views, at least.)