def _timeout_inquiries(self):
        """Mark Inquiries as "timeout" that have exceeded their TTL"""
        try:
            purge_inquiries(logger=LOG)
        except Exception as e:
            LOG.exception("Failed to purge inquiries: %s" % (six.text_type(e)))

        return True
Mark Inquiries as "timeout" that have exceeded their TTL
st2reactor/st2reactor/garbage_collector/base.py