def metadata_get(self, path, cached=True):
        """
        get metadata from inspect, specified by path

        :param path: list of str
        :param cached: bool, use cached version of inspect if available
        """
        try:
            value = graceful_chain_get(self.inspect(cached=cached).response, *path)
        except docker.errors.NotFound:
            logger.warning("object %s is not available anymore", self)
            raise NotAvailableAnymore()
        return value
get metadata from inspect, specified by path

        :param path: list of str
        :param cached: bool, use cached version of inspect if available