code: def get_absolute_url(self):
          
          try:
              return reverse('horizon:%s:%s:%s' % (self._registered_with.slug,
                                                   self.slug,
                                                   self.index_url_name))
          except Exception as exc:
              # Logging here since this will often be called in a template
              # where the exception would be hidden.
              LOG.info("Error reversing absolute URL for %(self)s: %(exc)s",
                       {'self': self, 'exc': exc})
              raise
docs: Returns the default URL for this panel.
  
          The default URL is defined as the URL pattern with ``name="index"`` in
          the URLconf for this panel.