docs: def set_staff_url(parser, token):
      """
      Assign an URL to be the "admin link" of this page.
      Example::
  
          {% set_staff_url %}{% url 'admin:fluent_pages_page_change' page.id %}{% end_set_staff_url %}
      """
      nodelist = parser.parse(('end_set_staff_url',))
      parser.delete_first_token()
      return AdminUrlNode(nodelist)