def _exit_session(self):
        """
        Exits session to Hetzner account and returns.
        """
        api = self.api[self.account]
        response = self._get(api['exit']['GET']['url'])
        if not Provider._filter_dom(response.text, api['filter']):
            LOGGER.info('Hetzner => Exit session')
        else:
            LOGGER.warning('Hetzner => Unable to exit session')
        self.session = None
        return True
Exits session to Hetzner account and returns.