docs: def author_display(author, *args):
      """Returns either the linked or not-linked profile name."""
  
      # Call get_absolute_url or a function returning none if not defined
      url = getattr(author, 'get_absolute_url', lambda: None)()
      # get_short_name or unicode representation
      short_name = getattr(author, 'get_short_name', lambda: six.text_type(author))()
      if url:
          return mark_safe('<a href="{}">{}</a>'.format(url, short_name))
      else:
          return short_name