async def open(self) -> 'Verifier':
        """
        Explicit entry. Perform ancestor opening operations,
        then parse cache from archive if so configured, and
        synchronize revocation registry to tails tree content.

        :return: current object
        """

        LOGGER.debug('Verifier.open >>>')

        await super().open()
        if self.config.get('parse-caches-on-open', False):
            ArchivableCaches.parse(self.dir_cache)

        LOGGER.debug('Verifier.open <<<')
        return self