code: def get_absolute_url(self):
          
          try:
              return self._registered(self.default_panel).get_absolute_url()
          except Exception:
              # Logging here since this will often be called in a template
              # where the exception would be hidden.
              LOG.exception("Error reversing absolute URL for %s.", self)
              raise
docs: Returns the default URL for this dashboard.
  
          The default URL is defined as the URL pattern with ``name="index"``
          in the URLconf for the :class:`~horizon.Panel` specified by
          :attr:`~horizon.Dashboard.default_panel`.