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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_absolute_url(self):
 """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`. """

        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